North West Wales
Stretching from Llandudno across to the Llŷn Peninsula and down towards Towyn and covering the Snowdonia National Park, our North West Wales catchment is home to beautiful coastlines and spectacular scenery and we serve around 340,000 customers.
Example of investment in area:
- We are in the process of designing a solution for Bala WwTW to improve it’s capacity to treat more flow and store more storm water prior to any storm discharge, the scheme will also improve the quality of its discharge to prevent deterioration to the watercourse of the River. This £4.5m investment is due to be completed by the end of March 2025.
- Between 2020 and 2025 we will be spending £3.1m in the North West on connecting properties to the wastewater network, known as First Time Sewerage Schemes, which help reduce pollutions and improve the environment.
- £4.2m is being invested to reduce releases discharges from our large pumping station in Llandudno Junction which in turn will improve the coastal water quality.
- We will be investing £11.8m in investigating and improving our asset performance around the shellfish waters in the North West, leading to an improvements in water quality in the Menai Strait.
We also plan to undertake a water quality modelling programme on the Meir, Gwyrfai and Eden SAC rivers. These rivers are meeting the phosphorus standards to meet good conservation status but we want to understand how we can contribute to maintaining this status now and in the future.
Building upon the success of our Event Duration Monitor (EDM) installation programme (2019-2020) we are currently investing £42m across Wales in our Storm Overflow Assessment Framework (SOAF). Over the next 5 years (2020-2025) this programme will use data from the EDM sites to prioritise wastewater assets for investigation, with the aim to reduce both the number and volume of storm water discharges to the environment. This will improve both watercourse amenity value and water quality overall.
We are currently undertaking 91 investigations into a prioritised list of EDM trigger assets within the North West Wales area.
A £19m investment has been started to install Pass Forward Flow monitoring on over 300 wastewater treatment works to enable us to monitor our compliance against our flow permits and assess whether we’re fully utilising the treatment works full treatment capacity prior to spilling to storm. This investment will take up to 3 years to complete. Pass forward flow is the minimum flow that an asset is required to pass forward before spilling to storm to ensure it remains compliant.
Our 2021 data is below..
| Name | Duration (Hours & Minutes) | Releases Per Annum |
| Llanystumdwy WwTW | 0 Hours 15 Minutes | 1 |
| Bryncir Garndolbenmaen | 384 Hours 30 Minutes | 92 |
| Tyn Y Groes WwTW | 58 Hours 15 Minutes | 19 |
| Llangaffo WwTW | 480 Hours 0 Minutes | 138 |
| Abergynolwn Tywyn | 177 Hours 15 Minutes | 40 |
| Eg;wusbach | 1751 Hours 0 Minutes | 85 |
| Mynytho WwTW | 1341 Hours 15 Minutes | 127 |
| Bontdolgadfan PS | 800 Hours 15 Minutes | 48 |
| Betws Yn Rhos Abergele | 2520 Hours 0 Minutes | 140 |
| Llyn Golf Penrhos | 60 Hours 45 Minutes | 15 |
| Dyffryn Ardudwy | 782 Hours 45 Minutes | 60 |
| Porthmadog (1) | 4 Hours 45 Minutes | 4 |
| Porthmadog Lombard Street/Bank | 6 Hours 30 Minutes | 19 |
| Porthmadog Main | 438 Hours 45 Minutes | 104 |
| Porthmadog Tremadog Iscraig | 6 Hours 30 Minutes | 10 |
| Llandegfan | 1312 Hours 15 Minutes | 90 |
| Llanfechell | 1025 Hours 45 Minutes | 78 |
| Gwalchmai Holyhead | 9 Hours 30 Minutes | 16 |
| Llanffestiniog Works 1 | 2590 Hours 0 Minutes | 307 |
| Llanffestiniog Works 2 | 1081 Hours 45 Minutes | 116 |
| Llanrwst Conwy | 887 Hours 45 Minutes | 85 |
| Talsarnau | 269 Hours 15 Minutes | 63 |
| Llanberis - Dol Elidir | 86 Hours 30 Minutes | 36 |
| Llanrug WwTW | 1631 Hours 45 Minutes | 120 |
| Pont Rhythallt | 1333 Hours 45 Minutes | 132 |
| Tai Craig Don Y Don | 154 Hours 15 Minutes | 21 |
| Rhos Cottages Capel Curig | 3519 Hours 45 Minutes | 191 |
| Pontllyfni | 731 Hours 15 Minutes | 52 |
| Tal Y Bont Dolgarrog Talybont | 1250 Hours 45 Minutes | 86 |
| Dolgarreg Tan Y Ffordd Dolgarrog | 99 Hours 45 Minutes | 37 |
| Carmel Dorlan Goch Goresion | 629 Hours 30 Minutes | 114 |
| Llwyn Gwalch Caernarfon | 172 Hours 30 Minutes | 26 |
| Glanrafon Wen Rhosgadfan | 188 Hours 0 Minutes | 71 |
| Heulfryn Caernarfon | 314 Hours 15 Minutes | 71 |
| Hen Gastell Caernarfon | 481 Hours 15 Minutes | 83 |
| Dinas Llanwnda | 274 Hours 15 Minutes | 102 |
| Bontnewydd Caernarfon | 704 Hours 0 Minutes | 111 |
| Bontnewydd No 10 Caernarfon | 118 Hours 0 Minutes | 58 |
| Llanfairfechan No 1 | 147 Hours 15 Minutes | 43 |
| Llangefni WwTW | 40 Hours 30 Minutes | 46 |
| Llanfaglan | 582 Hours 0 Minutes | 63 |
| Caernarfon Caernafon | 30 Hours 45 Minutes | 42 |
| Caernarfon | 306 Hours 0 Minutes | 85 |
| Caernarfon Bank Quay | 0 Hours 0 Minutes | 0 |
| Caernarfon Mill Lane | 254 Hours 15 Minutes | 93 |
| Llanfair Pwllgwyngyll Llanfair Pg | 698 Hours 45 Minutes | 111 |
| Llanfair Pwllgwyngyll Llanfair Pg No 2 | 0 Hours 0 Minutes | 0 |
| Llansadwrn SPS | 0 Hours 0 Minutes | 0 |
| A493 Dollgellau | 18 Hours 45 Minutes | 4 |
| Llanelltyd SPS | 10 Hours 0 Minutes | 8 |
| Penmaenpool Dollgellau | 701 Hours 30 Minutes | 107 |
| Llanelltyd | 1741 Hours 0 Minutes | 100 |
| Glandwyryd Blaenau Ffestiniog | 2805 Hours 0 Minutes | 166 |
| Glandwr Terrace Blaenau Ffestiniog | 581 Hours 30 Minutes | 98 |
| Halfway Bridge Tregarth | 2750 Hours 0 Minutes | 140 |
| Fron Ogwen | 1856 Hours 15 Minutes | 110 |
| Trefriw | 1322 Hours 0 Minutes | 94 |
| Brookdale Trefriw Llanrwst | 14 Hours 30 Minutes | 4 |
| Bethel | 3415 Hours 30 Minutes | 185 |
| Bethel Ysgoldy | 0 Hours 15 Minutes | 1 |
| Bethel Tregof | 60 Hours 45 Minutes | 19 |
| Rhiwlas Wwtw | 463 Hours 0 Minutes | 114 |
| Bron Aber Works | 339 Hours 15 Minutes | 35 |
| Commins Coch SPS | 2790 Hours 15 Minutes | 132 |
| Llanllyfni WwTW | 2521 Hours 15 Minutes | 195 |
| Glan Aber Llanllyfni Caernarfon | 299 Hours 45 Minutes | 121 |
| Penygroes Caernarfon | 166 Hours 15 Minutes | 67 |
| Talysarn Gas Works | 0 Hours 0 Minutes | 0 |
| Talysarn Bridge | 437 Hours 45 Minutes | 81 |
| Nantlle No 5- | 539 Hours 15 Minutes | 77 |
| Llanberis | 1135 Hours 45 Minutes | 132 |
| Staylittle Lane Dolgellau | 372 Hours 45 Minutes | 64 |
| Llangoed Pont Y Brenin | 64 Hours 45 Minutes | 12 |
| Llangoed Lleiniog | 278 Hours 0 Minutes | 50 |
| Marian Mawr | 187 Hours 45 Minutes | 45 |
| Conwy Gyffin St Agnes | 3 Hours 15 Minutes | 7 |
| Morfa Bach Conwy | 0 Hours 0 Minutes | 0 |
| Betws y Coed Golf Club | 1264 Hours 15 Minutes | 92 |
| Waterloo Hotel Betws Y Coed | 209 Hours 30 Minutes | 30 |
| Dwygyfylchi Headworks | 15 Hours 15 Minutes | 6 |
| Tywyn Llandudno Junction | 0 Hours 15 Minutes | 1 |
| Fairbourne Friogg | 67 Hours 15 Minutes | 5 |
| Fairbourne Bryncoch | 117 Hours 15 Minutes | 10 |
| Llanfachreth Dolgellau | 48 Hours 15 Minutes | 14 |
| Arthog Mawddach Crescent | 59 Hours 15 Minutes | 6 |
| Abergwyngregyn | 943 Hours 0 Minutes | 48 |
| Tyn Coed House Gaerwen | 116 Hours 15 Minutes | 11 |
| Llanbrynmair WwTW | 5413 Hours 0 Minutes | 276 |
| Maes y Berth Llanerchymedd | 0 Hours 0 Minutes | 0 |
| Llan Penmachno WwTW | 1074 Hours 0 Minutes | 82 |
| Malltraeth (1) | 79 Hours 30 Minutes | 27 |
| Tywyn Deganwy Rd | 5 Hours 30 Minutes | 10 |
| Barmouth / Abermaw | 25 Hours 45 Minutes | 16 |
| Barmouth / Abermaw Last Inn | 24 Hours 45 Minutes | 15 |
| Ty'n Coed Waunfawr | 1459 Hours 30 Minutes | 102 |
| Penisarwaun WwTW | 827 Hours 45 Minutes | 126 |
| Pen Yr Olchfa Deiniolen | 1 Hours 45 Minutes | 1 |
| Clwt Y Bont Caernarfon | 820 Hours 45 Minutes | 130 |
| Llansanffraid Glan Conwy Llanrwst Road | 0 Hours 15 Minutes | 1 |
| Colwyn Bay Llanddulas Abergele Road | 0 Hours 15 Minutes | 1 |
| Llanbedrog - Lon Nant-Iago | 645 Hours 30 Minutes | 37 |
| Nefyn Fire Station | 1381 Hours 0 Minutes | 148 |
| Bontddu | 1503 Hours 45 Minutes | 123 |
| Colwyn Bay Marine Road | 0 Hours 0 Minutes | 0 |
| Colwyn - Beach Rd | 60 Hours 45 Minutes | 25 |
| Turkey Shore | 223 Hours 30 Minutes | 48 |
| Caernarfon Angelesey Crudes | 0 Hours 0 Minutes | 0 |
| Waterside Holyhead | 9 Hours 30 Minutes | 35 |
| Morawelon | 365 Hours 30 Minutes | 38 |
| Llansanffraid Glan Conwy | 811 Hours 0 Minutes | 50 |
| Colwyn Bay Llanddulas Sea | 188 Hours 30 Minutes | 104 |
| Penrhyn Bay | 237 Hours 45 Minutes | 34 |
| Conwy Morfa Drive | 92 Hours 15 Minutes | 54 |
| Gogarth Llandudno West | 186 Hours 30 Minutes | 64 |
| Llaneilian - Llaneilian Amlwch | 285 Hours 45 Minutes | 28 |
| Rhosneigr - Lon Traeth Llydan | 159 Hours 30 Minutes | 22 |
| Pwllheli Gimblet Rock | 0 Hours 0 Minutes | 0 |
| Porth Y Felin Holyhead | 783 Hours 30 Minutes | 56 |
| Quay St Amlwch | 103 Hours 45 Minutes | 20 |
| Bull Bay SPS | 513 Hours 30 Minutes | 72 |
| Beaumaris West End | 73 Hours 15 Minutes | 24 |
| Llandegfan Rhianfa | 87 Hours 30 Minutes | 23 |
| Llandegfan Glyn Garth | 85 Hours 45 Minutes | 17 |
| Four Mile Bridge Holyhead | 901 Hours 45 Minutes | 60 |
| Valley - Gorad Road | 91 Hours 45 Minutes | 30 |
| Cemaes Bay | 637 Hours 15 Minutes | 42 |
| Caernarfon Waterloo Port | 0 Hours 15 Minutes | 1 |
| Valley - Newlands Park | 0 Hours 0 Minutes | 0 |
| Holyhead - Penrhos Beach | 0 Hours 15 Minutes | 1 |
| Holyhead - Coastgaurd | 195 Hours 0 Minutes | 69 |
| Malltraeth (2) | - Hours - Minutes | - |
| Penmon Llangoed Cynlais | 9 Hours 15 Minutes | 5 |
| Penrhyn Bay Penrhyn Hill | - Hours - Minutes | - |
| Penmaenmawr Promenade | 34 Hours 30 Minutes | 18 |
| Maentwrog - Bull Street | - Hours - Minutes | - |
| Porthmadog Amanda Terrace | 0 Hours 0 Minutes | 0 |
| Porthmadog Borth-Y-Gest | 59 Hours 15 Minutes | 26 |
| Porthmadog Britannia Place | 49 Hours 15 Minutes | 7 |
| Aberdaron | 152 Hours 0 Minutes | 30 |
| Abersoch Harbour | 0 Hours 0 Minutes | 0 |
| Pwllheli Cardiff Road | 303 Hours 15 Minutes | 46 |
| Pwllheli Bridge Garage | 0 Hours 0 Minutes | 0 |
| Pwllheli Glan-Y-Don | 13 Hours 45 Minutes | 5 |
| Pwllheli Morfa Garreg | 0 Hours 0 Minutes | 0 |
| Llandudno - Dale Road | 892 Hours 0 Minutes | 204 |
| Arthog Wesleyan Terrace | 58 Hours 45 Minutes | 4 |
| Arthog St Mary's Terrace | 89 Hours 15 Minutes | 27 |
| Penrhyn Bay Llandudno Road (1) | 72 Hours 15 Minutes | 50 |
| Llanfairfechan Park Crescent | 65 Hours 0 Minutes | 24 |
| Conwy Mill Hill | 3 Hours 15 Minutes | 7 |
| Mill Rd Betws-Y-Coed | 1421 Hours 45 Minutes | 79 |
| Pentre Ddu Betws Y Coed | 141 Hours 0 Minutes | 29 |
| Cwm Penmachno | 2766 Hours 15 Minutes | 140 |
| Caernarfon Min-Y-Nant | 11 Hours 45 Minutes | 19 |
| Caernarfon Margret Street | 83 Hours 45 Minutes | 82 |
| Caernarfon Crossville | 102 Hours 30 Minutes | 60 |
| Caernarfon Seiont Bridge | 157 Hours 15 Minutes | 18 |
| Caernarfon Balaclava Road | 0 Hours 0 Minutes | 0 |
| Bethesda - Rock Terrace | 548 Hours 45 Minutes | 64 |
| Colwyn Bay Queens Road | 118 Hours 0 Minutes | 32 |
| Pentrefoelas Cel Conwy | 13 Hours 45 Minutes | 5 |
| Minffordd Street Corris Machynlleth | 70 Hours 0 Minutes | 11 |
| Llangefni - Rear of Burgess | 36 Hours 15 Minutes | 23 |
| Gaerwen Station Llandaniel | 724 Hours 15 Minutes | 62 |
| Hermon Boddorgan | 590 Hours 45 Minutes | 52 |
| Trearddur Holyhead Bay (1) | 298 Hours 30 Minutes | 62 |
| Gorsllwyd Rhosbyl | 1710 Hours 45 Minutes | 140 |
| Plas Y Ffrwd | 113 Hours 45 Minutes | 29 |
| Nantlle SPS | 1318 Hours 0 Minutes | 96 |
| Fairbourne Glasfryn Terrace | 63 Hours 0 Minutes | 4 |
| Arthog Castell | 86 Hours 15 Minutes | 9 |
| Arthog Terrace | 239 Hours 15 Minutes | 27 |
| Llangernyw SPS | 98 Hours 45 Minutes | 11 |
| Gwalchmai Isaf SPS | 51 Hours 15 Minutes | 10 |
| Scotland Terrace Lllangefni | 193 Hours 15 Minutes | 61 |
| Dwyran Hen Felin Wen | 1 Hours 45 Minutes | 5 |
| Dwyran Rhydwyn | 59 Hours 0 Minutes | 24 |
| Abergynolwyn | 20 Hours 45 Minutes | 4 |
| Gors Rd, Towyn | 0 Hours 0 Minutes | 0 |
| Malltraeth (3) | - Hours - Minutes | - |
| Llanrhos Llandudno Hill View | 6 Hours 15 Minutes | 5 |
| Llanfairfechan Hospital | 0 Hours 0 Minutes | 0 |
| Muriau Rd Betws Y Coed | 30 Hours 0 Minutes | 27 |
| Tywyn Deganwy Beach | 4 Hours 0 Minutes | 6 |
| Penrhyn Bay Glanwydden | 723 Hours 45 Minutes | 42 |
| Brynrefail Caernarfon | 437 Hours 0 Minutes | 63 |
| Glasinfryn SPS | 639 Hours 0 Minutes | 78 |
| Tan Y Fael Estate Abergele | 3 Hours 15 Minutes | 10 |
| Blaenau Ffestiniog - Llwyn-Y-Gell Road | 4 Hours 15 Minutes | 17 |
| Blaenau Ffestiniog - Pencefn Road | 1039 Hours 15 Minutes | 123 |
| Wynnes Arms Blaenau Ffestiniog | 681 Hours 45 Minutes | 110 |
| Fairbourne | 98 Hours 0 Minutes | 17 |
| Aberangell No.1 | - Hours - Minutes | - |
| Pentraeth Tan Y Graig | 0 Hours 0 Minutes | 0 |
| Cefn-Bach Llanddaniel Pont Y Grug | 263 Hours 15 Minutes | 42 |
| Llanddona Gorsllwyd | 837 Hours 30 Minutes | 106 |
| Llansadwrn | 7 Hours 45 Minutes | 3 |
| Bodedern Angelsey | 0 Hours 0 Minutes | 0 |
| Penseri Llanfaelog | 350 Hours 30 Minutes | 39 |
| Trearddur Bay Haul Y Mor | 0 Hours 0 Minutes | 0 |
| Llangefni - Industrial Estate Road | 115 Hours 0 Minutes | 14 |
| Llangefni - Rhostrehwfa SPS | 46 Hours 30 Minutes | 13 |
| Talwrn Road No.1 Talwrn | 53 Hours 30 Minutes | 17 |
| Newborough / Niwbwrch | 0 Hours 0 Minutes | 0 |
| Tan Y Ffordd Dolgarreg | 338 Hours 45 Minutes | 58 |
| Tywyn Llandudno Junction Marl Drive | 66 Hours 45 Minutes | 9 |
| Ynys Mon Offices Llangefni | 60 Hours 45 Minutes | 42 |
| Llanfaes Friars Bay | 0 Hours 0 Minutes | 0 |
| Llandegai Tal-Y-Bont | 4 Hours 15 Minutes | 11 |
| Clynnog Fawr | 256 Hours 0 Minutes | 53 |
| Penrhyn Bay Llandudno Road (2) | 9 Hours 15 Minutes | 3 |
| Conwy Quay | 12 Hours 30 Minutes | 10 |
| Kinmel Bay / Bae Cinmel Llysfaen Avenue | 0 Hours 0 Minutes | 0 |
| Blaenau Ffestiniog - Cwm Bowydd | 904 Hours 45 Minutes | 114 |
| Pentraeth | 1473 Hours 30 Minutes | 129 |
| The Square Blaenau Ffestiniog | 0 Hours 0 Minutes | 0 |
| Dwyran Newborough | 111 Hours 15 Minutes | 34 |
| Bontnewydd CSO | 97 Hours 30 Minutes | 16 |
| Bodffordd Lllangefni | 241 Hours 0 Minutes | 52 |
| Brynsiencyn | 1441 Hours 0 Minutes | 99 |
| Brynsiencyn Main (1) | 164 Hours 15 Minutes | 16 |
| Brynsiencyn Main (2) | 161 Hours 45 Minutes | 17 |
| Criccieth / Cricieth East (1) | - Hours - Minutes | - |
| Criccieth / Cricieth East (2) | 183 Hours 0 Minutes | 18 |
| Criccieth / Cricieth West (1) | 167 Hours 30 Minutes | 28 |
| Criccieth / Cricieth West (2) | 405 Hours 45 Minutes | 43 |
| Criccieth / Cricieth Hen Felin Newydd | 9 Hours 0 Minutes | 6 |
| Tan Lon Lodge Criccieth | 1969 Hours 30 Minutes | 126 |
| Benllech Old Tidal (1) | 0 Hours 0 Minutes | 0 |
| Llanfaes Beaumaris | 676 Hours 15 Minutes | 76 |
| Llanfaes | 4 Hours 15 Minutes | 3 |
| Beaumaris Green (1) | 0 Hours 0 Minutes | 0 |
| Beaumaris Green (2) | 93 Hours 0 Minutes | 31 |
| Benllech Old Tidal (2) | 0 Hours 0 Minutes | 0 |
| Y Felinheli Harbour | 0 Hours 0 Minutes | 0 |
| Y Felinheli Main | 288 Hours 0 Minutes | 26 |
| Y Felinheli Marina | 0 Hours 0 Minutes | 0 |
| Aberdovey / Aberdyfi | 369 Hours 30 Minutes | 35 |
| Tywyn Morfa | 252 Hours 30 Minutes | 46 |
| Gwyllt Tywyn | 1817 Hours 30 Minutes | 103 |
| Bangor Beach Road Short Sea | 35 Hours 15 Minutes | 17 |
| Bangor Beach Road | 250 Hours 45 Minutes | 64 |
| Market Street Llanberis | 1 Hours 0 Minutes | 3 |
| Bangor Gorad Road (1) | 0 Hours 0 Minutes | 0 |
| Bangor Gorad Road (2) | 122 Hours 45 Minutes | 71 |
| Bangor Meirion Road | 2 Hours 45 Minutes | 4 |
| Llanberis | 94 Hours 30 Minutes | 34 |
| Ffordd Berthddu Llanrwst | 1 Hours 15 Minutes | 2 |
| Colwyn Bay Llanddulas Mill Street | 0 Hours 45 Minutes | 2 |
| Afon Glaslyn Beddgelert Caernarfon | 852 Hours 15 Minutes | 78 |
| Trefor CSO | 12 Hours 0 Minutes | 11 |
| Harlech Main (1) | 398 Hours 15 Minutes | 65 |
| Harlech Ffordd Penllach | 16 Hours 15 Minutes | 5 |
| Llanuwchllyn Bala | 326 Hours 30 Minutes | 46 |
| Maes Gwyndy Trawsfynydd | 182 Hours 45 Minutes | 68 |
| Bron Gwyndy Trawsfynydd | 19 Hours 0 Minutes | 18 |
| Prysor Garage | 1 Hours 15 Minutes | 5 |
| Porthmadog Chapel Street | - Hours - Minutes | - |
| Porthmadog Bakers Lane | 0 Hours 0 Minutes | 0 |
| High St Penrhydeudraeth | 980 Hours 15 Minutes | 115 |
| Trefriw - Coed Gwydyr | 189 Hours 30 Minutes | 55 |
| Llannor WwTW | 1216 Hours 0 Minutes | 119 |
| Menai Bridge / Porthaethwy Menai Llyn-Y-Felin (1) | 0 Hours 0 Minutes | 0 |
| Menai Bridge / Porthaethwy Menai Llyn-Y-Felin (2) | 0 Hours 0 Minutes | 0 |
| Menai Bridge / Porthaethwy Menai Ville (1) | 1065 Hours 30 Minutes | 96 |
| Menai Bridge / Porthaethwy Menai Ville (2) | 1065 Hours 30 Minutes | 96 |
| Menai Bridge / Porthaethwy Porthwen (1) | 7 Hours 15 Minutes | 15 |
| Menai Bridge / Porthaethwy Porthwen (2) | 7 Hours 15 Minutes | 15 |
| Menai Bridge / Porthaethwy Suspension Bridge (1) | 1365 Hours 30 Minutes | 108 |
| Menai Bridge / Porthaethwy Suspension Bridge (2) | 1365 Hours 30 Minutes | 108 |
| Llandegfan Menai | 2114 Hours 0 Minutes | 115 |
| Pentrefelin WwTW | 924 Hours 45 Minutes | 116 |
| Glan Rhos Army CentreAmlwch | 162 Hours 45 Minutes | 29 |
| Bangor Glantraeth Estate | 0 Hours 0 Minutes | 0 |
| Llanfair Pwllgwyngyll Treborth | 823 Hours 15 Minutes | 69 |
| Bangor Treborth | 33 Hours 30 Minutes | 14 |
| Colwyn Bay Rhos-On-Sea Church Road | 1063 Hours 30 Minutes | 87 |
| Bethel Tan Y Buarth | 61 Hours 0 Minutes | 24 |
| Tywyn Woodlands | 1 Hours 0 Minutes | 2 |
| Colwyn Bay Old Colwyn Llanelian Road | 0 Hours 0 Minutes | 0 |
| Gellilydan WwTW | 959 Hours 45 Minutes | 101 |
| Porthmadog (2) | 10 Hours 15 Minutes | 12 |
| Porthmadog (3) | 83 Hours 15 Minutes | 37 |
| Tywyn Ganol (1) | 0 Hours 30 Minutes | 2 |
| Tywyn Ganol (2) | 3037 Hours 30 Minutes | 364 |
| Tywyn Ganol (3) | 0 Hours 30 Minutes | 2 |
| Tywyn Llandudno Junction Glan-Y-Mor Road | 10 Hours 30 Minutes | 10 |
| Tywyn Llandudno Junction Conwy Road | 547 Hours 30 Minutes | 53 |
| Tywyn | 63 Hours 15 Minutes | 51 |
| Tywyn Deganwy Station (1) | 261 Hours 30 Minutes | 143 |
| Benllech Works | 480 Hours 45 Minutes | 70 |
| Rhosneigr | 749 Hours 0 Minutes | 39 |
| Dwygyfylchi Penmaenmawr (1) | 2574 Hours 0 Minutes | 175 |
| Dwygyfylchi Penmaenmawr (2) | 34 Hours 15 Minutes | 23 |
| Dolwyddelan Conwy | 2898 Hours 15 Minutes | 166 |
| St Gwyddelans Dolwyddelan | 190 Hours 30 Minutes | 38 |
| Aberffraw (1) | 0 Hours 30 Minutes | 2 |
| Aberffraw (2) | 2104 Hours 30 Minutes | 103 |
| Beddgelert Caernarfon | 2870 Hours 45 Minutes | 174 |
| Llanrwst Conwy | 416 Hours 0 Minutes | 91 |
| Penmaenmawr | 14 Hours 30 Minutes | 14 |
| Fairbourne (New) | 1665 Hours 45 Minutes | 89 |
| Llanystumdwy WwTW SPS | 0 Hours 0 Minutes | 0 |
| Caernarfon | 404 Hours 0 Minutes | 34 |
| Bangor Coleg Normal | 25 Hours 45 Minutes | 6 |
| Malltraeth (4) | 2 Hours 30 Minutes | 4 |
| Groesffordd Edern | 173 Hours 0 Minutes | 27 |
| Morfa Nefyn New (1) | 2454 Hours 15 Minutes | 160 |
| Morfa Nefyn New (2) | 235 Hours 0 Minutes | 71 |
| Nefyn | 9 Hours 15 Minutes | 14 |
| Morfa Nefyn New (3) | 48 Hours 15 Minutes | 25 |
| Towyn Kerfoot | 24 Hours 15 Minutes | 4 |
| Towyn Sandbank Road | 21 Hours 30 Minutes | 4 |
| Railway Station Betws Y Coed | 1543 Hours 0 Minutes | 94 |
| Bala WwTW | 1116 Hours 30 Minutes | 117 |
| Derlwyn Maentwrog | 833 Hours 15 Minutes | 81 |
| Llanbedr | 1810 Hours 45 Minutes | 156 |
| Llandanwg Station | 647 Hours 0 Minutes | 46 |
| Harlech Main (2) | 558 Hours 30 Minutes | 77 |
| Abererch | 3429 Hours 15 Minutes | 182 |
| Barmouth / Abermaw Outfall | 498 Hours 0 Minutes | 179 |
| Blaenau Ffestiniog WwTW | 24 Hours 15 Minutes | 23 |
| Trearddur Holyhead Bay (2) | 290 Hours 45 Minutes | 37 |
| Valley Storm Holyhead 1 | 860 Hours 15 Minutes | 71 |
| Valley Storm Holyhead 2 | 343 Hours 30 Minutes | 50 |
| Afonwen ` | 181 Hours 30 Minutes | 22 |
| Bangor Rd Bethesda | 1306 Hours 30 Minutes | 130 |
| Cerrigydrudion | 443 Hours 45 Minutes | 85 |
| Trefor 1 Caernarfon | 85 Hours 45 Minutes | 29 |
| Trefor WwTW | 1609 Hours 15 Minutes | 144 |
| Nebo Road Llanrwst | 11 Hours 0 Minutes | 33 |
| Dolgellau - Marian Mawr | 167 Hours 0 Minutes | 23 |
| Morfa Bychan (1) | 0 Hours 45 Minutes | 1 |
| Morfa Bychan (2) | 231 Hours 30 Minutes | 64 |
| Pwllheli Y Maes | 0 Hours 0 Minutes | 0 |
| Betws Yn Rhos WwTW | 1676 Hours 30 Minutes | 135 |
| Llwyngwril | 399 Hours 45 Minutes | 40 |
| Llanfair Talhaiarn | 860 Hours 15 Minutes | 74 |
| Towyn Road Abergele | 641 Hours 15 Minutes | 111 |
| Kinmel Bay / Bae Cinmel Golden Sands | 158 Hours 30 Minutes | 37 |
| Llansannan Ddol Llansannan | 0 Hours 45 Minutes | 1 |
| Efailnewydd WwTW | 1546 Hours 30 Minutes | 189 |
| Abergele - Berthglyd | 17 Hours 0 Minutes | 15 |
| Garndolbenmaen WwTW | 1058 Hours 30 Minutes | 100 |
| Rowen WwTW | 624 Hours 30 Minutes | 125 |
| Aberdaron WwTW | 221 Hours 45 Minutes | 24 |
| Chwilog WwTW | 814 Hours 30 Minutes | 90 |
| Llithfaen WwTW | 3318 Hours 45 Minutes | 155 |
| Old Colwyn - Beach Road | 15 Hours 15 Minutes | 44 |
| Llandanwg SPS | 4 Hours 45 Minutes | 1 |
| Porthmadog - Borth-Y-Gest | 71 Hours 0 Minutes | 75 |
| Old Colwyn - Llawr Pentre | 3 Hours 45 Minutes | 10 |
| Llanbedr CSO | 0 Hours 0 Minutes | 0 |
| Caernarfon - Peblig Industrial Estate | 129 Hours 0 Minutes | 28 |
| Penrhyn Bay - Penrhyn Isaf | 200 Hours 0 Minutes | 91 |
| Harlech - Rum Hole | 0 Hours 15 Minutes | 1 |
| Maes Bleddyn Rachub Lanllechid | 431 Hours 30 Minutes | 68 |
| Moelfre | 113 Hours 15 Minutes | 20 |
| Craig Y Don Amlwch | 409 Hours 45 Minutes | 55 |
| Holyhead - B4545 Four Mile Bridge | 7 Hours 30 Minutes | 2 |
| Trawsfynydd WwTW | 757 Hours 0 Minutes | 95 |
| Y Ffor WwTW | 3536 Hours 45 Minutes | 279 |
| Dolgellau WwTW | 3653 Hours 30 Minutes | 247 |
| Lower Corris WwTW | 1219 Hours 15 Minutes | 89 |
| Machynlleth WwTW 1 | 0 Hours 15 Minutes | 1 |
| Machynlleth WwTW 2 | 12 Hours 30 Minutes | 2 |
| Penrhyndeudraeth WwTW | 574 Hours 30 Minutes | 69 |
| Bodedern (Anglesey) WwTW | 14 Hours 45 Minutes | 5 |
| Holyhead - Hibernia Row | 3 Hours 0 Minutes | 1 |
| Llanfair PG SPS - Star | 237 Hours 45 Minutes | 41 |
| Conwy Harbour - Lower Gate Street | - Hours - Minutes | - |
| Blaenau Ffestiniog - Slaughterhouse | 0 Hours 0 Minutes | 0 |
| Bodffordd - Maes Yr Orsedd | 0 Hours 0 Minutes | 0 |
| Trearddur bay - Isallt Bach | 16 Hours 0 Minutes | 14 |
| Pontllyfni - Tai Lleuar | 0 Hours 0 Minutes | 0 |
| Llanuwchllyn WwTW | 3359 Hours 15 Minutes | 282 |
| Llangybi WwTW | 4613 Hours 30 Minutes | 244 |
| Llanllyfni - Pont Rectory Lane | 8 Hours 45 Minutes | 21 |
| Betws Y Coed - Pentre Felin | 0 Hours 0 Minutes | 0 |
| Holyhead - Ty Mawr | 0 Hours 0 Minutes | 0 |
| Caernarfon - Crown Street | 0 Hours 0 Minutes | 0 |
| Bryngwran WwTW | 3582 Hours 15 Minutes | 226 |
| Llangernyw WwTW | 1449 Hours 15 Minutes | 122 |
| Llangaffo SPS | 0 Hours 15 Minutes | 1 |
| Name | Duration (Hours & Minutes) | Releases Per Annum |
| Llanystumdwy WwTW | 1 Hours 0 Minutes | 4 |
| Bryncir Garndolbenmaen | 217 Hours 30 Minutes | 72 |
| Tyn Y Groes WwTW | 93 Hours 30 Minutes | 26 |
| Llangaffo WwTW | 308 Hours 15 Minutes | 141 |
| Abergynolwn Tywyn | 130 Hours 45 Minutes | 41 |
| Eg;wusbach | 2548 Hours 0 Minutes | 125 |
| Mynytho WwTW | 1084 Hours 15 Minutes | 159 |
| Bontdolgadfan PS | 105 Hours 30 Minutes | 17 |
| Betws Yn Rhos Abergele | 7 Hours 0 Minutes | 4 |
| Llyn Golf Penrhos | 191 Hours 45 Minutes | 80 |
| Dyffryn Ardudwy | 1458 Hours 15 Minutes | 89 |
| Porthmadog (1) | 3 Hours 30 Minutes | 2 |
| Porthmadog Lombard Street/Bank | 2 Hours 45 Minutes | 8 |
| Porthmadog Main | - | - |
| Porthmadog Tremadog Iscraig | 8 Hours 15 Minutes | 7 |
| Llandegfan | 1320 Hours 30 Minutes | 85 |
| Llanfechell | 1193 Hours 30 Minutes | 88 |
| Gwalchmai Holyhead | 2 Hours 30 Minutes | 4 |
| Llanffestiniog Works 1 | 4375 Hours 15 Minutes | 346 |
| Llanffestiniog Works 2 | 2176 Hours 30 Minutes | 182 |
| Llanrwst Conwy | 1538 Hours 30 Minutes | 116 |
| Talsarnau | 355 Hours 15 Minutes | 104 |
| Llanberis - Dol Elidir | 87 Hours 0 Minutes | 51 |
| Llanrug WwTW | 1642 Hours 15 Minutes | 117 |
| Pont Rhythallt | 1793 Hours 15 Minutes | 154 |
| Tai Craig Don Y Don | 371 Hours 30 Minutes | 55 |
| Rhos Cottages Capel Curig | 4186 Hours 30 Minutes | 231 |
| Pontllyfni | 1613 Hours 30 Minutes | 99 |
| Tal Y Bont Dolgarrog Talybont | 2719 Hours 45 Minutes | 150 |
| Dolgarreg Tan Y Ffordd Dolgarrog | 141 Hours 15 Minutes | 50 |
| Carmel Dorlan Goch Goresion | 825 Hours 15 Minutes | 168 |
| Llwyn Gwalch Caernarfon | 125 Hours 0 Minutes | 36 |
| Glanrafon Wen Rhosgadfan | 182 Hours 30 Minutes | 97 |
| Heulfryn Caernarfon | 308 Hours 0 Minutes | 100 |
| Hen Gastell Caernarfon | 471 Hours 45 Minutes | 109 |
| Dinas Llanwnda | 330 Hours 45 Minutes | 130 |
| Bontnewydd Caernarfon | 208 Hours 0 Minutes | 111 |
| Bontnewydd No 10 Caernarfon | 132 Hours 15 Minutes | 84 |
| Llanfairfechan No 1 | 210 Hours 15 Minutes | 61 |
| Llangefni WwTW | 109 Hours 0 Minutes | 75 |
| Llanfaglan | 334 Hours 15 Minutes | 49 |
| Caernarfon Caernafon | 28 Hours 0 Minutes | 49 |
| Caernarfon | 303 Hours 30 Minutes | 109 |
| Caernarfon Bank Quay | 0 Hours 0 Minutes | 0 |
| Caernarfon Mill Lane | 225 Hours 0 Minutes | 115 |
| Llanfair Pwllgwyngyll Llanfair Pg | 826 Hours 15 Minutes | 147 |
| Llanfair Pwllgwyngyll Llanfair Pg No 2 | 0 Hours 0 Minutes | 0 |
| Llansadwrn SPS | - | - |
| A493 Dollgellau | 17 Hours 30 Minutes | 6 |
| Llanelltyd SPS | 0 Hours 45 Minutes | 3 |
| Penmaenpool Dollgellau | 1291 Hours 15 Minutes | 148 |
| Llanelltyd | 2085 Hours 15 Minutes | 122 |
| Glandwyryd Blaenau Ffestiniog | 1819 Hours 15 Minutes | 170 |
| Glandwr Terrace Blaenau Ffestiniog | 780 Hours 15 Minutes | 123 |
| Halfway Bridge Tregarth | 480 Hours 0 Minutes | 69 |
| Fron Ogwen | 2841 Hours 0 Minutes | 152 |
| Trefriw | 1822 Hours 0 Minutes | 105 |
| Brookdale Trefriw Llanrwst | 131 Hours 45 Minutes | 16 |
| Bethel | 4346 Hours 15 Minutes | 230 |
| Bethel Ysgoldy | 0 Hours 30 Minutes | 1 |
| Bethel Tregof | 54 Hours 30 Minutes | 22 |
| Rhiwlas Wwtw | 133 Hours 45 Minutes | 31 |
| Bron Aber Works | 929 Hours 0 Minutes | 82 |
| Commins Coch SPS | 1799 Hours 15 Minutes | 84 |
| Llanllyfni WwTW | 2781 Hours 30 Minutes | 199 |
| Glan Aber Llanllyfni Caernarfon | 339 Hours 15 Minutes | 149 |
| Penygroes Caernarfon | 178 Hours 30 Minutes | 91 |
| Talysarn Gas Works | 0 Hours 30 Minutes | 2 |
| Talysarn Bridge | 589 Hours 45 Minutes | 118 |
| Nantlle No 5- | 304 Hours 45 Minutes | 103 |
| Llanberis | 1468 Hours 45 Minutes | 177 |
| Staylittle Lane Dolgellau | 307 Hours 30 Minutes | 68 |
| Llangoed Pont Y Brenin | 50 Hours 0 Minutes | 12 |
| Llangoed Lleiniog | 302 Hours 15 Minutes | 47 |
| Marian Mawr | 291 Hours 45 Minutes | 77 |
| Conwy Gyffin St Agnes | 1 Hours 15 Minutes | 4 |
| Morfa Bach Conwy | 0 Hours 15 Minutes | 1 |
| Betws y Coed Golf Club | 630 Hours 15 Minutes | 63 |
| Waterloo Hotel Betws Y Coed | 453 Hours 15 Minutes | 47 |
| Dwygyfylchi Headworks | 72 Hours 0 Minutes | 10 |
| Tywyn Llandudno Junction | 0 Hours 0 Minutes | 0 |
| Fairbourne Friogg | 4 Hours 45 Minutes | 5 |
| Fairbourne Bryncoch | 60 Hours 45 Minutes | 13 |
| Llanfachreth Dolgellau | 153 Hours 15 Minutes | 61 |
| Arthog Mawddach Crescent | 40 Hours 30 Minutes | 9 |
| Abergwyngregyn | 1422 Hours 0 Minutes | 71 |
| Tyn Coed House Gaerwen | 221 Hours 30 Minutes | 29 |
| Llanbrynmair WwTW | 4570 Hours 45 Minutes | 291 |
| Maes y Berth Llanerchymedd | - | - |
| Llan Penmachno WwTW | 1392 Hours 0 Minutes | 105 |
| Malltraeth (1) | 32 Hours 45 Minutes | 21 |
| Tywyn Deganwy Rd | 77 Hours 15 Minutes | 37 |
| Barmouth / Abermaw | 16 Hours 45 Minutes | 21 |
| Barmouth / Abermaw Last Inn | 8 Hours 15 Minutes | 10 |
| Ty'n Coed Waunfawr | 2247 Hours 30 Minutes | 149 |
| Penisarwaun WwTW | 1354 Hours 30 Minutes | 168 |
| Pen Yr Olchfa Deiniolen | 34 Hours 0 Minutes | 13 |
| Clwt Y Bont Caernarfon | 962 Hours 30 Minutes | 169 |
| Llansanffraid Glan Conwy Llanrwst Road | 2 Hours 0 Minutes | 2 |
| Colwyn Bay Llanddulas Abergele Road | 0 Hours 30 Minutes | 1 |
| Llanbedrog - Lon Nant-Iago | 1120 Hours 15 Minutes | 58 |
| Nefyn Fire Station | 1079 Hours 0 Minutes | 134 |
| Bontddu | 2191 Hours 45 Minutes | 157 |
| Colwyn Bay Marine Road | 0 Hours 0 Minutes | 0 |
| Colwyn - Beach Rd | 97 Hours 0 Minutes | 31 |
| Turkey Shore | 272 Hours 0 Minutes | 65 |
| Caernarfon Angelesey Crudes | 0 Hours 0 Minutes | 0 |
| Waterside Holyhead | - | - |
| Morawelon | 197 Hours 0 Minutes | 38 |
| Llansanffraid Glan Conwy | 868 Hours 0 Minutes | 53 |
| Colwyn Bay Llanddulas Sea | 196 Hours 0 Minutes | 58 |
| Penrhyn Bay | 290 Hours 45 Minutes | 47 |
| Conwy Morfa Drive | 142 Hours 30 Minutes | 50 |
| Gogarth Llandudno West | - | - |
| Llaneilian - Llaneilian Amlwch | 404 Hours 30 Minutes | 37 |
| Rhosneigr - Lon Traeth Llydan | 92 Hours 0 Minutes | 13 |
| Pwllheli Gimblet Rock | 3 Hours 30 Minutes | 2 |
| Porth Y Felin Holyhead | 605 Hours 0 Minutes | 69 |
| Quay St Amlwch | 173 Hours 15 Minutes | 40 |
| Bull Bay SPS | 1378 Hours 30 Minutes | 114 |
| Beaumaris West End | 89 Hours 30 Minutes | 26 |
| Llandegfan Rhianfa | 95 Hours 45 Minutes | 31 |
| Llandegfan Glyn Garth | 23 Hours 30 Minutes | 21 |
| Four Mile Bridge Holyhead | 974 Hours 30 Minutes | 62 |
| Valley - Gorad Road | 101 Hours 0 Minutes | 38 |
| Cemaes Bay | 600 Hours 15 Minutes | 42 |
| Caernarfon Waterloo Port | 0 Hours 0 Minutes | 0 |
| Valley - Newlands Park | 0 Hours 0 Minutes | 0 |
| Holyhead - Penrhos Beach | 0 Hours 0 Minutes | 0 |
| Holyhead - Coastgaurd | 171 Hours 30 Minutes | 105 |
| Malltraeth (2) | 0 Hours 30 Minutes | 1 |
| Penmon Llangoed Cynlais | 25 Hours 45 Minutes | 6 |
| Penrhyn Bay Penrhyn Hill | 1 Hours 45 Minutes | 4 |
| Penmaenmawr Promenade | 68 Hours 15 Minutes | 32 |
| Maentwrog - Bull Street | 0 Hours 0 Minutes | 0 |
| Porthmadog Amanda Terrace | 0 Hours 0 Minutes | 0 |
| Porthmadog Borth-Y-Gest | 29 Hours 30 Minutes | 30 |
| Porthmadog Britannia Place | 43 Hours 30 Minutes | 10 |
| Aberdaron | 44 Hours 30 Minutes | 22 |
| Abersoch Harbour | 0 Hours 0 Minutes | 0 |
| Pwllheli Cardiff Road | 231 Hours 15 Minutes | 63 |
| Pwllheli Bridge Garage | 0 Hours 0 Minutes | 0 |
| Pwllheli Glan-Y-Don | 0 Hours 30 Minutes | 2 |
| Pwllheli Morfa Garreg | 0 Hours 15 Minutes | 1 |
| Llandudno - Dale Road | 1074 Hours 45 Minutes | 245 |
| Arthog Wesleyan Terrace | 62 Hours 15 Minutes | 10 |
| Arthog St Mary's Terrace | 19 Hours 15 Minutes | 10 |
| Penrhyn Bay Llandudno Road (1) | 132 Hours 0 Minutes | 78 |
| Llanfairfechan Park Crescent | 99 Hours 0 Minutes | 41 |
| Conwy Mill Hill | 1 Hours 15 Minutes | 4 |
| Mill Rd Betws-Y-Coed | 2212 Hours 45 Minutes | 116 |
| Pentre Ddu Betws Y Coed | 290 Hours 15 Minutes | 58 |
| Cwm Penmachno | 4313 Hours 30 Minutes | 215 |
| Caernarfon Min-Y-Nant | 23 Hours 30 Minutes | 26 |
| Caernarfon Margret Street | 95 Hours 0 Minutes | 88 |
| Caernarfon Crossville | 96 Hours 45 Minutes | 86 |
| Caernarfon Seiont Bridge | 122 Hours 0 Minutes | 15 |
| Caernarfon Balaclava Road | 0 Hours 0 Minutes | 0 |
| Bethesda - Rock Terrace | 719 Hours 30 Minutes | 112 |
| Colwyn Bay Queens Road | 125 Hours 30 Minutes | 31 |
| Pentrefoelas Cel Conwy | 22 Hours 0 Minutes | 8 |
| Minffordd Street Corris Machynlleth | 59 Hours 30 Minutes | 15 |
| Llangefni - Rear of Burgess | 30 Hours 15 Minutes | 23 |
| Gaerwen Station Llandaniel | 1610 Hours 15 Minutes | 97 |
| Hermon Boddorgan | - | - |
| Trearddur Holyhead Bay (1) | 257 Hours 45 Minutes | 66 |
| Gorsllwyd Rhosbyl | 810 Hours 45 Minutes | 89 |
| Plas Y Ffrwd | 61 Hours 45 Minutes | 30 |
| Nantlle SPS | 2525 Hours 15 Minutes | 161 |
| Fairbourne Glasfryn Terrace | 6 Hours 30 Minutes | 4 |
| Arthog Castell | 153 Hours 0 Minutes | 15 |
| Arthog Terrace | 196 Hours 30 Minutes | 23 |
| Llangernyw SPS | 664 Hours 0 Minutes | 53 |
| Gwalchmai Isaf SPS | 40 Hours 45 Minutes | 14 |
| Scotland Terrace Lllangefni | 159 Hours 0 Minutes | 83 |
| Dwyran Hen Felin Wen | 2 Hours 45 Minutes | 4 |
| Dwyran Rhydwyn | 8 Hours 30 Minutes | 16 |
| Abergynolwyn | 2 Hours 30 Minutes | 5 |
| Gors Rd, Towyn | 0 Hours 0 Minutes | 0 |
| Malltraeth (3) | 0 Hours 30 Minutes | 1 |
| Llanrhos Llandudno Hill View | 24 Hours 0 Minutes | 12 |
| Llanfairfechan Hospital | 0 Hours 0 Minutes | 0 |
| Muriau Rd Betws Y Coed | 51 Hours 0 Minutes | 47 |
| Tywyn Deganwy Beach | 12 Hours 30 Minutes | 12 |
| Penrhyn Bay Glanwydden | 579 Hours 0 Minutes | 53 |
| Brynrefail Caernarfon | 453 Hours 15 Minutes | 74 |
| Glasinfryn SPS | 860 Hours 0 Minutes | 146 |
| Tan Y Fael Estate Abergele | 3 Hours 15 Minutes | 6 |
| Blaenau Ffestiniog - Llwyn-Y-Gell Road | 4 Hours 0 Minutes | 9 |
| Blaenau Ffestiniog - Pencefn Road | 1206 Hours 0 Minutes | 142 |
| Wynnes Arms Blaenau Ffestiniog | 754 Hours 0 Minutes | 118 |
| Fairbourne | 151 Hours 15 Minutes | 29 |
| Aberangell No.1 | 0 Hours 0 Minutes | 0 |
| Pentraeth Tan Y Graig | 0 Hours 45 Minutes | 1 |
| Cefn-Bach Llanddaniel Pont Y Grug | 365 Hours 45 Minutes | 56 |
| Llanddona Gorsllwyd | 301 Hours 0 Minutes | 104 |
| Llansadwrn | 92 Hours 0 Minutes | 13 |
| Bodedern Angelsey | 0 Hours 0 Minutes | 0 |
| Penseri Llanfaelog | 156 Hours 45 Minutes | 20 |
| Trearddur Bay Haul Y Mor | 0 Hours 0 Minutes | 0 |
| Llangefni - Industrial Estate Road | 60 Hours 0 Minutes | 8 |
| Llangefni - Rhostrehwfa SPS | 18 Hours 0 Minutes | 9 |
| Talwrn Road No.1 Talwrn | 68 Hours 0 Minutes | 28 |
| Newborough / Niwbwrch | 102 Hours 15 Minutes | 8 |
| Tan Y Ffordd Dolgarreg | 383 Hours 30 Minutes | 69 |
| Tywyn Llandudno Junction Marl Drive | 91 Hours 30 Minutes | 16 |
| Ynys Mon Offices Llangefni | 37 Hours 15 Minutes | 46 |
| Llanfaes Friars Bay | 0 Hours 0 Minutes | 0 |
| Llandegai Tal-Y-Bont | 6 Hours 30 Minutes | 7 |
| Clynnog Fawr | 199 Hours 0 Minutes | 72 |
| Penrhyn Bay Llandudno Road (2) | 13 Hours 45 Minutes | 5 |
| Conwy Quay | 4 Hours 0 Minutes | 6 |
| Kinmel Bay / Bae Cinmel Llysfaen Avenue | 12 Hours 15 Minutes | 5 |
| Blaenau Ffestiniog - Cwm Bowydd | 1159 Hours 15 Minutes | 167 |
| Pentraeth | 3959 Hours 15 Minutes | 184 |
| The Square Blaenau Ffestiniog | 0 Hours 0 Minutes | 0 |
| Dwyran Newborough | 71 Hours 45 Minutes | 49 |
| Bontnewydd CSO | 49 Hours 45 Minutes | 20 |
| Bodffordd Lllangefni | 191 Hours 15 Minutes | 47 |
| Brynsiencyn | - | - |
| Brynsiencyn Main (1) | 30 Hours 45 Minutes | 6 |
| Brynsiencyn Main (2) | 30 Hours 45 Minutes | 6 |
| Criccieth / Cricieth East (1) | 92 Hours 0 Minutes | 13 |
| Criccieth / Cricieth East (2) | 265 Hours 45 Minutes | 34 |
| Criccieth / Cricieth West (1) | 99 Hours 15 Minutes | 27 |
| Criccieth / Cricieth West (2) | 428 Hours 30 Minutes | 55 |
| Criccieth / Cricieth Hen Felin Newydd | 0 Hours 45 Minutes | 1 |
| Tan Lon Lodge Criccieth | 1863 Hours 15 Minutes | 142 |
| Benllech Old Tidal (1) | 9 Hours 0 Minutes | 8 |
| Llanfaes Beaumaris | 440 Hours 30 Minutes | 36 |
| Llanfaes | 17 Hours 30 Minutes | 6 |
| Beaumaris Green (1) | 94 Hours 15 Minutes | 5 |
| Beaumaris Green (2) | 181 Hours 0 Minutes | 35 |
| Benllech Old Tidal (2) | 9 Hours 0 Minutes | 8 |
| Y Felinheli Harbour | 0 Hours 0 Minutes | 0 |
| Y Felinheli Main | 105 Hours 30 Minutes | 19 |
| Y Felinheli Marina | 0 Hours 0 Minutes | 0 |
| Aberdovey / Aberdyfi | 205 Hours 30 Minutes | 26 |
| Tywyn Morfa | 442 Hours 45 Minutes | 81 |
| Gwyllt Tywyn | 2215 Hours 30 Minutes | 143 |
| Bangor Beach Road Short Sea | 17 Hours 45 Minutes | 10 |
| Bangor Beach Road | 170 Hours 0 Minutes | 92 |
| Market Street Llanberis | 1 Hours 15 Minutes | 4 |
| Bangor Gorad Road (1) | 0 Hours 0 Minutes | 0 |
| Bangor Gorad Road (2) | 56 Hours 45 Minutes | 51 |
| Bangor Meirion Road | 0 Hours 15 Minutes | 1 |
| Llanberis | 106 Hours 30 Minutes | 52 |
| Ffordd Berthddu Llanrwst | 29 Hours 15 Minutes | 9 |
| Colwyn Bay Llanddulas Mill Street | 0 Hours 0 Minutes | 0 |
| Afon Glaslyn Beddgelert Caernarfon | 980 Hours 15 Minutes | 93 |
| Trefor CSO | 13 Hours 15 Minutes | 25 |
| Harlech Main (1) | 658 Hours 45 Minutes | 85 |
| Harlech Ffordd Penllach | 4 Hours 30 Minutes | 9 |
| Llanuwchllyn Bala | 701 Hours 15 Minutes | 84 |
| Maes Gwyndy Trawsfynydd | 182 Hours 0 Minutes | 79 |
| Bron Gwyndy Trawsfynydd | 20 Hours 15 Minutes | 27 |
| Prysor Garage | 4 Hours 15 Minutes | 15 |
| Porthmadog Chapel Street | 1 Hours 15 Minutes | 5 |
| Porthmadog Bakers Lane | 0 Hours 0 Minutes | 0 |
| High St Penrhydeudraeth | 1352 Hours 15 Minutes | 142 |
| Trefriw - Coed Gwydyr | 411 Hours 0 Minutes | 89 |
| Llannor WwTW | 821 Hours 30 Minutes | 131 |
| Menai Bridge / Porthaethwy Menai Llyn-Y-Felin (1) | 4 Hours 30 Minutes | 6 |
| Menai Bridge / Porthaethwy Menai Llyn-Y-Felin (2) | 4 Hours 30 Minutes | 6 |
| Menai Bridge / Porthaethwy Menai Ville (1) | 817 Hours 30 Minutes | 96 |
| Menai Bridge / Porthaethwy Menai Ville (2) | 817 Hours 30 Minutes | 96 |
| Menai Bridge / Porthaethwy Porthwen (1) | 104 Hours 30 Minutes | 18 |
| Menai Bridge / Porthaethwy Porthwen (2) | 104 Hours 30 Minutes | 18 |
| Menai Bridge / Porthaethwy Suspension Bridge (1) | 603 Hours 45 Minutes | 72 |
| Menai Bridge / Porthaethwy Suspension Bridge (2) | 603 Hours 45 Minutes | 72 |
| Llandegfan Menai | 2235 Hours 45 Minutes | 122 |
| Pentrefelin WwTW | 3361 Hours 30 Minutes | 196 |
| Glan Rhos Army CentreAmlwch | 136 Hours 15 Minutes | 39 |
| Bangor Glantraeth Estate | 0 Hours 30 Minutes | 1 |
| Llanfair Pwllgwyngyll Treborth | 1517 Hours 15 Minutes | 133 |
| Bangor Treborth | 15 Hours 15 Minutes | 9 |
| Colwyn Bay Rhos-On-Sea Church Road | 1803 Hours 45 Minutes | 98 |
| Bethel Tan Y Buarth | 76 Hours 45 Minutes | 30 |
| Tywyn Woodlands | 4 Hours 0 Minutes | 2 |
| Colwyn Bay Old Colwyn Llanelian Road | 0 Hours 0 Minutes | 0 |
| Gellilydan WwTW | 1484 Hours 30 Minutes | 132 |
| Porthmadog (2) | 39 Hours 45 Minutes | 15 |
| Porthmadog (3) | 138 Hours 0 Minutes | 50 |
| Tywyn Ganol (1) | 7 Hours 15 Minutes | 9 |
| Tywyn Ganol (2) | 1629 Hours 45 Minutes | 301 |
| Tywyn Ganol (3) | 7 Hours 15 Minutes | 9 |
| Tywyn Llandudno Junction Glan-Y-Mor Road | 73 Hours 0 Minutes | 16 |
| Tywyn Llandudno Junction Conwy Road | 154 Hours 45 Minutes | 29 |
| Tywyn | 38 Hours 15 Minutes | 62 |
| Tywyn Deganwy Station (1) | 311 Hours 45 Minutes | 147 |
| Benllech Works | 659 Hours 15 Minutes | 94 |
| Rhosneigr | 432 Hours 15 Minutes | 26 |
| Dwygyfylchi Penmaenmawr (1) | 3324 Hours 0 Minutes | 186 |
| Dwygyfylchi Penmaenmawr (2) | 18 Hours 30 Minutes | 22 |
| Dolwyddelan Conwy | 4081 Hours 0 Minutes | 256 |
| St Gwyddelans Dolwyddelan | 219 Hours 30 Minutes | 47 |
| Aberffraw (1) | 0 Hours 15 Minutes | 1 |
| Aberffraw (2) | 1804 Hours 45 Minutes | 93 |
| Beddgelert Caernarfon | 5351 Hours 30 Minutes | 364 |
| Llanrwst Conwy | 531 Hours 0 Minutes | 114 |
| Penmaenmawr | 33 Hours 45 Minutes | 23 |
| Fairbourne (New) | 3749 Hours 0 Minutes | 190 |
| Llanystumdwy WwTW | 0 Hours 30 Minutes | 2 |
| Caernarfon | 4 Hours 30 Minutes | 6 |
| Bangor Coleg Normal | 4 Hours 0 Minutes | 4 |
| Malltraeth (4) | 0 Hours 15 Minutes | 1 |
| Groesffordd Edern | 52 Hours 45 Minutes | 23 |
| Morfa Nefyn New (1) | 1383 Hours 45 Minutes | 140 |
| Morfa Nefyn New (2) | 200 Hours 30 Minutes | 86 |
| Nefyn | 5 Hours 0 Minutes | 14 |
| Morfa Nefyn New (3) | 19 Hours 30 Minutes | 22 |
| Towyn Kerfoot | 74 Hours 45 Minutes | 10 |
| Towyn Sandbank Road | 51 Hours 0 Minutes | 9 |
| Railway Station Betws Y Coed | 1790 Hours 0 Minutes | 112 |
| Bala WwTW | 1958 Hours 0 Minutes | 151 |
| Derlwyn Maentwrog | 1286 Hours 30 Minutes | 129 |
| Llanbedr | 2109 Hours 45 Minutes | 214 |
| Llandanwg Station | 620 Hours 30 Minutes | 61 |
| Harlech Main (2) | 861 Hours 15 Minutes | 96 |
| Abererch | 4288 Hours 0 Minutes | 207 |
| Barmouth / Abermaw Outfall | - | - |
| Blaenau Ffestiniog WwTW | 0 Hours 0 Minutes | 0 |
| Trearddur Holyhead Bay (2) | 195 Hours 15 Minutes | 39 |
| Valley Storm Holyhead 1 | 1156 Hours 0 Minutes | 82 |
| Valley Storm Holyhead 2 | 328 Hours 30 Minutes | 68 |
| Afonwen ` | 76 Hours 30 Minutes | 17 |
| Bangor Rd Bethesda | 2225 Hours 0 Minutes | 180 |
| Cerrigydrudion | 489 Hours 30 Minutes | 104 |
| Trefor 1 Caernarfon | 398 Hours 45 Minutes | 51 |
| Trefor WwTW | 2219 Hours 30 Minutes | 179 |
| Nebo Road Llanrwst | 47 Hours 30 Minutes | 50 |
| Dolgellau - Marian Mawr | 212 Hours 30 Minutes | 33 |
| Morfa Bychan (1) | 0 Hours 0 Minutes | 0 |
| Morfa Bychan (2) | 201 Hours 30 Minutes | 130 |
| Pwllheli Y Maes | 0 Hours 0 Minutes | 0 |
| Betws Yn Rhos WwTW | 1695 Hours 45 Minutes | 108 |
| Llwyngwril | 156 Hours 45 Minutes | 38 |
| Llanfair Talhaiarn | 1271 Hours 0 Minutes | 82 |
| Towyn Road Abergele | 801 Hours 0 Minutes | 98 |
| Kinmel Bay / Bae Cinmel Golden Sands | 193 Hours 0 Minutes | 32 |
| Llansannan Ddol Llansannan | 6 Hours 0 Minutes | 3 |
| Efailnewydd WwTW | 1286 Hours 30 Minutes | 260 |
| Abergele - Berthglyd | 24 Hours 45 Minutes | 10 |
| Garndolbenmaen WwTW | 433 Hours 30 Minutes | 46 |
| Rowen WwTW | 1273 Hours 45 Minutes | 160 |
| Aberdaron WwTW | 164 Hours 0 Minutes | 25 |
| Chwilog WwTW | 811 Hours 15 Minutes | 85 |
| Llithfaen WwTW | 4245 Hours 15 Minutes | 221 |
| Old Colwyn - Beach Road | 21 Hours 45 Minutes | 55 |
| Llandanwg SPS | 21 Hours 0 Minutes | 2 |
| Porthmadog - Borth-Y-Gest | - | - |
| Old Colwyn - Llawr Pentre | 2 Hours 30 Minutes | 9 |
| Llanbedr CSO | 0 Hours 0 Minutes | 0 |
| Caernarfon - Peblig Industrial Estate | 106 Hours 30 Minutes | 50 |
| Penrhyn Bay - Penrhyn Isaf | 229 Hours 0 Minutes | 100 |
| Harlech - Rum Hole | 0 Hours 15 Minutes | 1 |
| Maes Bleddyn Rachub Lanllechid | 442 Hours 15 Minutes | 93 |
| Moelfre | 88 Hours 15 Minutes | 23 |
| Craig Y Don Amlwch | - | - |
| Holyhead - B4545 Four Mile Bridge | 0 Hours 0 Minutes | 0 |
| Trawsfynydd WwTW | 1813 Hours 15 Minutes | 166 |
| Name | Duration (Hours & Minutes) | Releases Per Annum |
| A493 Dollgellau | 9 Hours 15 Minutes | 5 |
| Aberangell No.1 | 11 Hours 30 Minutes | 5 |
| Aberdaron | 64 Hours 30 Minutes | 21 |
| Aberdovey / Aberdyfi | 94 Hours 15 Minutes | 17 |
| Abererch | 3838 Hours 45 Minutes | 203 |
| Aberffraw (1) | 0 Hours 0 Minutes | 0 |
| Aberffraw (2) | 942 Hours 45 Minutes | 57 |
| Abergwyngregyn | 275 Hours 45 Minutes | 17 |
| Abergynolwn Tywyn | 132 Hours 30 Minutes | 40 |
| Abergynolwyn | 28 Hours 0 Minutes | 15 |
| Abersoch Harbour | 0 Hours 0 Minutes | 0 |
| Afon Glaslyn Beddgelert Caernarfon | 827 Hours 15 Minutes | 79 |
| Afonwen ` | 150 Hours 0 Minutes | 27 |
| Arthog Castell | 99 Hours 30 Minutes | 14 |
| Arthog Mawddach Crescent | 0 Hours 0 Minutes | 0 |
| Arthog St Mary's Terrace | 2 Hours 15 Minutes | 3 |
| Arthog Terrace | 103 Hours 45 Minutes | 31 |
| Arthog Wesleyan Terrace | 5 Hours 15 Minutes | 7 |
| Bangor Beach Road | 66 Hours 30 Minutes | 53 |
| Bangor Beach Road Short Sea | 0 Hours 45 Minutes | 3 |
| Bangor Coleg Normal | 0 Hours 0 Minutes | 0 |
| Bangor Glantraeth Estate | - | - |
| Bangor Gorad Road (1) | 0 Hours 0 Minutes | 0 |
| Bangor Gorad Road (2) | 2 Hours 15 Minutes | 5 |
| Bangor Meirion Road | 4 Hours 0 Minutes | 3 |
| Bangor Rd Bethesda | 1162 Hours 30 Minutes | 141 |
| Bangor Treborth | 200 Hours 45 Minutes | 30 |
| Barmouth / Abermaw | 16 Hours 30 Minutes | 12 |
| Barmouth / Abermaw Last Inn | 5 Hours 45 Minutes | 3 |
| Barmouth / Abermaw Outfall | - | - |
| Beaumaris Green (1) | 0 Hours 15 Minutes | 1 |
| Beaumaris Green (2) | 59 Hours 0 Minutes | 10 |
| Beaumaris West End | 32 Hours 45 Minutes | 13 |
| Beddgelert Caernarfon | 3957 Hours 30 Minutes | 249 |
| Benllech Old Tidal (1) | 0 Hours 0 Minutes | 0 |
| Benllech Old Tidal (2) | 0 Hours 15 Minutes | 1 |
| Benllech Works | 364 Hours 15 Minutes | 67 |
| Bethel | 2638 Hours 15 Minutes | 165 |
| Bethel Tan Y Buarth | 20 Hours 30 Minutes | 16 |
| Bethel Tregof | 12 Hours 30 Minutes | 10 |
| Bethel Ysgoldy | 0 Hours 45 Minutes | 3 |
| Bethesda - Rock Terrace | 260 Hours 45 Minutes | 90 |
| Betws y Coed Golf Club | 237 Hours 15 Minutes | 30 |
| Betws Yn Rhos Abergele | 0 Hours 0 Minutes | 0 |
| Bodedern Angelsey | 0 Hours 0 Minutes | 0 |
| Bodffordd Lllangefni | 37 Hours 45 Minutes | 12 |
| Bontddu | 2220 Hours 45 Minutes | 153 |
| Bontnewydd Caernarfon | 44 Hours 30 Minutes | 59 |
| Bontnewydd No 10 Caernarfon | 68 Hours 45 Minutes | 59 |
| Bron Aber Works | 936 Hours 45 Minutes | 115 |
| Bron Gwyndy Trawsfynydd | 9 Hours 45 Minutes | 15 |
| Brookdale Trefriw Llanrwst | 29 Hours 0 Minutes | 4 |
| Bryncir Garndolbenmaen | 6 Hours 15 Minutes | 17 |
| Brynrefail Caernarfon | 183 Hours 0 Minutes | 38 |
| Brynsiencyn | - | - |
| Brynsiencyn Main (1) | 1 Hours 30 Minutes | 1 |
| Brynsiencyn Main (2) | 1 Hours 30 Minutes | 1 |
| Caernarfon | 4 Hours 30 Minutes | 4 |
| Caernarfon | 135 Hours 0 Minutes | 72 |
| Caernarfon Angelesey Crudes | 0 Hours 15 Minutes | 1 |
| Caernarfon Balaclava Road | 0 Hours 30 Minutes | 1 |
| Caernarfon Bank Quay | 0 Hours 0 Minutes | 0 |
| Caernarfon Caernafon | 11 Hours 15 Minutes | 27 |
| Caernarfon Crossville | 47 Hours 30 Minutes | 51 |
| Caernarfon Margret Street | 142 Hours 45 Minutes | 85 |
| Caernarfon Mill Lane | 136 Hours 0 Minutes | 90 |
| Caernarfon Min-Y-Nant | 8 Hours 15 Minutes | 16 |
| Caernarfon Seiont Bridge | 18 Hours 0 Minutes | 4 |
| Caernarfon Waterloo Port | 1 Hours 15 Minutes | 3 |
| Carmel Dorlan Goch Goresion | 398 Hours 0 Minutes | 140 |
| Cefn-Bach Llanddaniel Pont Y Grug | 122 Hours 45 Minutes | 18 |
| Cemaes Bay | 25 Hours 45 Minutes | 13 |
| Cerrigydrudion | 281 Hours 15 Minutes | 59 |
| Clwt Y Bont Caernarfon | 549 Hours 30 Minutes | 148 |
| Clynnog Fawr | 143 Hours 15 Minutes | 67 |
| Colwyn - Beach Rd | 72 Hours 0 Minutes | 27 |
| Colwyn Bay Llanddulas Abergele Road | 0 Hours 15 Minutes | 1 |
| Colwyn Bay Llanddulas Beach Road | - | - |
| Colwyn Bay Llanddulas Mill Street | 0 Hours 0 Minutes | 0 |
| Colwyn Bay Llanddulas Sea | 133 Hours 45 Minutes | 52 |
| Colwyn Bay Marine Road | 0 Hours 0 Minutes | 0 |
| Colwyn Bay Old Colwyn Llanelian Road | 0 Hours 0 Minutes | 0 |
| Colwyn Bay Queens Road | 9 Hours 45 Minutes | 8 |
| Colwyn Bay Rhos-On-Sea Church Road | 1541 Hours 45 Minutes | 93 |
| Conwy Gyffin St Agnes | 2 Hours 0 Minutes | 5 |
| Conwy Mill Hill | 2 Hours 0 Minutes | 5 |
| Conwy Morfa Drive | 74 Hours 0 Minutes | 33 |
| Conwy Quay | - | - |
| Craig Y Don Amlwch | - | - |
| Criccieth / Cricieth East (1) | 480 Hours 15 Minutes | 47 |
| Criccieth / Cricieth East (2) | 528 Hours 15 Minutes | 49 |
| Criccieth / Cricieth Hen Felin Newydd | 4 Hours 15 Minutes | 7 |
| Criccieth / Cricieth West (1) | 21 Hours 0 Minutes | 15 |
| Criccieth / Cricieth West (2) | 253 Hours 15 Minutes | 36 |
| Cwm Penmachno | 3342 Hours 0 Minutes | 178 |
| Derlwyn Maentwrog | 561 Hours 15 Minutes | 107 |
| Dinas Llanwnda | 234 Hours 0 Minutes | 96 |
| Dolgarreg Tan Y Ffordd Dolgarrog | 226 Hours 30 Minutes | 45 |
| Dolwyddelan Conwy | 3981 Hours 30 Minutes | 239 |
| Dwygyfylchi Headworks | 16 Hours 15 Minutes | 5 |
| Dwygyfylchi Penmaenmawr (1) | 2595 Hours 0 Minutes | 161 |
| Dwygyfylchi Penmaenmawr (2) | 15 Hours 0 Minutes | 12 |
| Dwyran Hen Felin Wen | 126 Hours 45 Minutes | 14 |
| Dwyran Newborough | - | - |
| Dwyran Rhydwyn | 20 Hours 30 Minutes | 19 |
| Dyffryn Ardudwy | 306 Hours 15 Minutes | 43 |
| Eg;wusbach | 1559 Hours 30 Minutes | 82 |
| Fairbourne | 138 Hours 45 Minutes | 15 |
| Fairbourne (New) | 3212 Hours 0 Minutes | 157 |
| Fairbourne Bryncoch | 5 Hours 30 Minutes | 7 |
| Fairbourne Friogg | 0 Hours 0 Minutes | 0 |
| Fairbourne Glasfryn Terrace | 9 Hours 0 Minutes | 5 |
| Ffordd Berthddu Llanrwst | 17 Hours 15 Minutes | 8 |
| Four Mile Bridge Holyhead | 526 Hours 30 Minutes | 35 |
| Fron Ogwen | 2133 Hours 45 Minutes | 128 |
| Gaerwen Station Llandaniel | 1206 Hours 30 Minutes | 76 |
| Glan Aber Llanllyfni Caernarfon | 216 Hours 30 Minutes | 142 |
| Glan Rhos Army CentreAmlwch | 44 Hours 0 Minutes | 24 |
| Glandwr Terrace Blaenau Ffestiniog | 551 Hours 15 Minutes | 110 |
| Glandwyryd Blaenau Ffestiniog | 0 Hours 0 Minutes | 0 |
| Glandwyryd Blaenau Ffestiniog | 3 Hours 15 Minutes | 1 |
| Glanrafon Wen Rhosgadfan | 78 Hours 0 Minutes | 68 |
| Gogarth Llandudno West | - | - |
| Gors Rd, Towyn | 0 Hours 0 Minutes | 0 |
| Gorsllwyd Rhosbyl | 876 Hours 45 Minutes | 86 |
| Groesffordd Edern | 6 Hours 15 Minutes | 3 |
| Gwalchmai Holyhead | 2 Hours 0 Minutes | 1 |
| Gwyllt Tywyn | 2989 Hours 0 Minutes | 172 |
| Halfway Bridge Tregarth | 158 Hours 45 Minutes | 49 |
| Harlech Ffordd Penllach | 3 Hours 30 Minutes | 8 |
| Harlech Main (1) | 188 Hours 15 Minutes | 19 |
| Harlech Main (2) | 485 Hours 45 Minutes | 37 |
| Hen Gastell Caernarfon | 170 Hours 45 Minutes | 60 |
| Hermon Boddorgan | 852 Hours 30 Minutes | 64 |
| Heulfryn Caernarfon | 192 Hours 30 Minutes | 70 |
| High St Penrhydeudraeth | 400 Hours 30 Minutes | 100 |
| Kinmel Bay / Bae Cinmel Golden Sands | 216 Hours 0 Minutes | 29 |
| Kinmel Bay / Bae Cinmel Llysfaen Avenue | 0 Hours 15 Minutes | 1 |
| Llanbedr | 234 Hours 0 Minutes | 102 |
| Llanbedrog - Lon Nant-Iago | 102 Hours 0 Minutes | 9 |
| Llanberis | 33 Hours 30 Minutes | 19 |
| Llanberis | 732 Hours 45 Minutes | 120 |
| Llandanwg Station | 235 Hours 15 Minutes | 25 |
| Llanddona Gorsllwyd | 387 Hours 15 Minutes | 75 |
| Llandegai Tal-Y-Bont | 114 Hours 15 Minutes | 16 |
| Llandegfan | 939 Hours 30 Minutes | 48 |
| Llandegfan Glyn Garth | 6 Hours 15 Minutes | 9 |
| Llandegfan Menai | 920 Hours 15 Minutes | 62 |
| Llandegfan Rhianfa | 17 Hours 30 Minutes | 17 |
| Llaneilian - Llaneilian Amlwch | - | - |
| Llanelltyd | 1447 Hours 0 Minutes | 98 |
| Llanfachreth Dolgellau | 311 Hours 0 Minutes | 85 |
| Llanfaes | 15 Hours 45 Minutes | 5 |
| Llanfaes Beaumaris | - | - |
| Llanfaes Friars Bay | 0 Hours 0 Minutes | 0 |
| Llanfaglan | 597 Hours 15 Minutes | 70 |
| Llanfair Pwllgwyngyll Llanfair Pg | 511 Hours 0 Minutes | 133 |
| Llanfair Pwllgwyngyll Llanfair Pg No 2 | 0 Hours 0 Minutes | 0 |
| Llanfair Pwllgwyngyll Treborth | 323 Hours 45 Minutes | 47 |
| Llanfair Talhaiarn | 624 Hours 30 Minutes | 64 |
| Llanfairfechan Hospital | 0 Hours 0 Minutes | 0 |
| Llanfairfechan No 1 | 71 Hours 45 Minutes | 36 |
| Llanfairfechan Park Crescent | 259 Hours 30 Minutes | 104 |
| Llanfechell | - | - |
| Llanffestiniog Works 1 | - | - |
| Llanffestiniog Works 2 | 1068 Hours 15 Minutes | 111 |
| Llangoed Lleiniog | 138 Hours 0 Minutes | 29 |
| Llangoed Pont Y Brenin | 28 Hours 0 Minutes | 7 |
| Llanrhos Llandudno Hill View | 16 Hours 15 Minutes | 10 |
| Llanrwst Conwy | 308 Hours 0 Minutes | 99 |
| Llanrwst Conwy | 401 Hours 15 Minutes | 41 |
| Llansadwrn | 3 Hours 45 Minutes | 1 |
| Llansanffraid Glan Conwy | 761 Hours 15 Minutes | 53 |
| Llansanffraid Glan Conwy Llanrwst Road | 1 Hours 45 Minutes | 1 |
| Llansannan Ddol Llansannan | 0 Hours 45 Minutes | 3 |
| Llanuwchllyn Bala | 436 Hours 30 Minutes | 51 |
| Llwyn Gwalch Caernarfon | 200 Hours 30 Minutes | 56 |
| Llwyngwril | 83 Hours 45 Minutes | 18 |
| Llyn Golf Penrhos | 183 Hours 15 Minutes | 82 |
| Maes Bleddyn Rachub Lanllechid | 96 Hours 45 Minutes | 49 |
| Maes Gwyndy Trawsfynydd | 88 Hours 45 Minutes | 62 |
| Maes y Berth Llanerchymedd | - | - |
| Malltraeth (1) | - | - |
| Malltraeth (2) | 1 Hours 15 Minutes | 5 |
| Malltraeth (3) | 1 Hours 15 Minutes | 5 |
| Malltraeth (4) | 0 Hours 45 Minutes | 1 |
| Marian Mawr | 119 Hours 0 Minutes | 58 |
| Market Street Llanberis | 1 Hours 45 Minutes | 5 |
| Menai Bridge / Porthaethwy Menai Llyn-Y-Felin (1) | 3 Hours 45 Minutes | 6 |
| Menai Bridge / Porthaethwy Menai Llyn-Y-Felin (2) | 3 Hours 45 Minutes | 6 |
| Menai Bridge / Porthaethwy Menai Ville (1) | 268 Hours 15 Minutes | 60 |
| Menai Bridge / Porthaethwy Menai Ville (2) | 268 Hours 15 Minutes | 60 |
| Menai Bridge / Porthaethwy Porthwen (1) | 205 Hours 45 Minutes | 28 |
| Menai Bridge / Porthaethwy Porthwen (2) | 205 Hours 45 Minutes | 28 |
| Menai Bridge / Porthaethwy Suspension Bridge (1) | 9 Hours 30 Minutes | 10 |
| Menai Bridge / Porthaethwy Suspension Bridge (2) | 9 Hours 30 Minutes | 10 |
| Mill Rd Betws-Y-Coed | 1190 Hours 15 Minutes | 66 |
| Minffordd Street Corris Machynlleth | 17 Hours 30 Minutes | 8 |
| Moelfre | 29 Hours 30 Minutes | 14 |
| Morawelon | 70 Hours 0 Minutes | 24 |
| Morfa Bach Conwy | 0 Hours 0 Minutes | 0 |
| Morfa Bychan (1) | 0 Hours 0 Minutes | 0 |
| Morfa Bychan (2) | 113 Hours 0 Minutes | 56 |
| Morfa Nefyn New (1) | 578 Hours 30 Minutes | 84 |
| Morfa Nefyn New (2) | 113 Hours 15 Minutes | 63 |
| Morfa Nefyn New (3) | 42 Hours 30 Minutes | 50 |
| Muriau Rd Betws Y Coed | 55 Hours 30 Minutes | 39 |
| Nantlle No 5- | 71 Hours 30 Minutes | 55 |
| Nebo Road Llanrwst | 44 Hours 45 Minutes | 42 |
| Nefyn | 6 Hours 30 Minutes | 17 |
| Nefyn Fire Station | 363 Hours 45 Minutes | 85 |
| Newborough / Niwbwrch | 6 Hours 0 Minutes | 5 |
| Pen Yr Olchfa Deiniolen | 2 Hours 45 Minutes | 1 |
| Penmaenmawr | 17 Hours 30 Minutes | 11 |
| Penmaenmawr Promenade | 17 Hours 15 Minutes | 16 |
| Penmaenpool Dollgellau | 1389 Hours 45 Minutes | 140 |
| Penmon Llangoed Cynlais | 6 Hours 0 Minutes | 3 |
| Penrhyn Bay | 205 Hours 30 Minutes | 31 |
| Penrhyn Bay Glanwydden | 308 Hours 0 Minutes | 27 |
| Penrhyn Bay Llandudno Road (1) | 105 Hours 15 Minutes | 64 |
| Penrhyn Bay Llandudno Road (2) | 11 Hours 15 Minutes | 3 |
| Penrhyn Bay Penrhyn Hill | 1 Hours 30 Minutes | 5 |
| Penseri Llanfaelog | 18 Hours 0 Minutes | 13 |
| Pentraeth | - | - |
| Pentraeth Tan Y Graig | 0 Hours 0 Minutes | 0 |
| Pentre Ddu Betws Y Coed | 134 Hours 45 Minutes | 36 |
| Pentrefoelas Cel Conwy | 30 Hours 45 Minutes | 6 |
| Penygroes Caernarfon | 120 Hours 15 Minutes | 80 |
| Plas Y Ffrwd | - | - |
| Pont Rhythallt | 490 Hours 30 Minutes | 123 |
| Pontllyfni | 825 Hours 0 Minutes | 58 |
| Porth Y Felin Holyhead | 495 Hours 30 Minutes | 46 |
| Porthmadog (1) | 0 Hours 30 Minutes | 1 |
| Porthmadog (2) | 7 Hours 0 Minutes | 6 |
| Porthmadog (3) | 2 Hours 45 Minutes | 2 |
| Porthmadog Amanda Terrace | 0 Hours 0 Minutes | 0 |
| Porthmadog Bakers Lane | 0 Hours 15 Minutes | 1 |
| Porthmadog Borth-Y-Gest | 27 Hours 15 Minutes | 25 |
| Porthmadog Britannia Place | 3 Hours 45 Minutes | 2 |
| Porthmadog Chapel Street | 3 Hours 30 Minutes | 10 |
| Porthmadog Lombard Street/Bank | 1 Hours 30 Minutes | 4 |
| Porthmadog Main | 158 Hours 0 Minutes | 58 |
| Porthmadog Tremadog Iscraig | 35 Hours 45 Minutes | 13 |
| Prysor Garage | 879 Hours 0 Minutes | 134 |
| Pwllheli Bridge Garage | 0 Hours 0 Minutes | 0 |
| Pwllheli Cardiff Road | 113 Hours 15 Minutes | 44 |
| Pwllheli Gimblet Rock | 0 Hours 30 Minutes | 2 |
| Pwllheli Glan-Y-Don | 0 Hours 30 Minutes | 2 |
| Pwllheli Morfa Garreg | 0 Hours 0 Minutes | 0 |
| Pwllheli Y Maes | 0 Hours 0 Minutes | 0 |
| Quay St Amlwch | 182 Hours 30 Minutes | 36 |
| Railway Station Betws Y Coed | 0 Hours 0 Minutes | 0 |
| Rhos Cottages Capel Curig | 3493 Hours 0 Minutes | 208 |
| Rhosneigr | 72 Hours 45 Minutes | 9 |
| Scotland Terrace Lllangefni | 66 Hours 15 Minutes | 61 |
| St Gwyddelans Dolwyddelan | 24 Hours 15 Minutes | 16 |
| Staylittle Lane Dolgellau | 150 Hours 0 Minutes | 46 |
| Tai Craig Don Y Don | 19 Hours 0 Minutes | 6 |
| Tal Y Bont Dolgarrog Talybont | 1563 Hours 45 Minutes | 108 |
| Talsarnau | 138 Hours 15 Minutes | 52 |
| Talwrn Road No.1 Talwrn | 98 Hours 15 Minutes | 34 |
| Talysarn Bridge | 326 Hours 30 Minutes | 95 |
| Talysarn Gas Works | 3 Hours 15 Minutes | 5 |
| Tan Lon Lodge Criccieth | 1778 Hours 45 Minutes | 138 |
| Tan Y Fael Estate Abergele | 2 Hours 15 Minutes | 6 |
| Tan Y Ffordd Dolgarreg | 188 Hours 15 Minutes | 36 |
| The Square Blaenau Ffestiniog | 0 Hours 30 Minutes | 2 |
| Towyn Kerfoot | 66 Hours 0 Minutes | 9 |
| Towyn Road Abergele | 545 Hours 45 Minutes | 103 |
| Towyn Sandbank Road | 66 Hours 15 Minutes | 11 |
| Trearddur Bay Haul Y Mor | 0 Hours 0 Minutes | 0 |
| Trearddur Holyhead Bay (1) | 147 Hours 15 Minutes | 65 |
| Trearddur Holyhead Bay (2) | 40 Hours 45 Minutes | 14 |
| Trefor 1 Caernarfon | 32 Hours 15 Minutes | 25 |
| Trefriw | 702 Hours 0 Minutes | 78 |
| Tregarth Henturnpike | 624 Hours 15 Minutes | 46 |
| Turkey Shore | 82 Hours 45 Minutes | 47 |
| Tyn Coed House Gaerwen | 49 Hours 0 Minutes | 8 |
| Ty'n Coed Waunfawr | 1480 Hours 0 Minutes | 116 |
| Tywyn | 11 Hours 0 Minutes | 27 |
| Tywyn Morfa | 550 Hours 0 Minutes | 89 |
| Tywyn Deganwy Beach | 0 Hours 30 Minutes | 1 |
| Tywyn Deganwy Rd | 72 Hours 15 Minutes | 49 |
| Tywyn Deganwy Station (1) | 180 Hours 30 Minutes | 137 |
| Tywyn Ganol (1) | 8 Hours 30 Minutes | 12 |
| Tywyn Ganol (2) | 999 Hours 45 Minutes | 208 |
| Tywyn Ganol (3) | 8 Hours 30 Minutes | 12 |
| Tywyn Llandudno Junction | 0 Hours 0 Minutes | 0 |
| Tywyn Llandudno Junction Conwy Road | 21 Hours 15 Minutes | 4 |
| Tywyn Llandudno Junction Glan-Y-Mor Road | 159 Hours 0 Minutes | 25 |
| Tywyn Llandudno Junction Marl Drive | 55 Hours 45 Minutes | 9 |
| Tywyn Woodlands | 21 Hours 45 Minutes | 10 |
| Valley Storm Holyhead 1 | 399 Hours 45 Minutes | 39 |
| Valley Storm Holyhead 2 | 104 Hours 30 Minutes | 31 |
| Waterloo Hotel Betws Y Coed | 78 Hours 15 Minutes | 13 |
| Waterside Holyhead | 151 Hours 0 Minutes | 268 |
| Wynnes Arms Blaenau Ffestiniog | 725 Hours 0 Minutes | 122 |
| Y Felinheli Harbour | 0 Hours 0 Minutes | 0 |
| Y Felinheli Main | 20 Hours 30 Minutes | 6 |
| Y Felinheli Marina | 0 Hours 0 Minutes | 0 |
| Ynys Mon Offices Llangefni | 15 Hours 0 Minutes | 25 |