Keeping you up to date

The overall £ 150 million water treatment works investment programme in North Wales is being progressed as quickly as possible, most of the projects are scheduled to be completed in the period 2010-2015, although design and construction work for several of the sites, was accelerated into last year ensuring completion of projects at Cwellyn, Rhiwgoch and the Ultra Violet installation programme to protect against cryptosporidium.

The map (below) shows all the treatment facilities in the north Wales area that will benefit from our investment programme.

Simply click on any location to view a summary of what we are doing in that area.

Facilities that will benefit from our investment Cilfor Bryn Cowlyd Alwen Capel Curig Mynydd Llandygai Cwellyn Cwm Dulyn Cwmystradllyn Eithinfynydd Llannerch/Glascoed LlidiardauBala Rhiwgoch Pen y Cefn

Alwen

Denbigh, Ruthin, Cerrigydrudion, Llandrillo, Corwen, Glyndyfyrdwy, Llanarmon (supports Queensferry, Buckley etc)

Investment
New water treatment works - £15.7 m

Work proposed
Addition of new filtration plant, improved disinfection and lime plant.

Benefits
Improve effectiveness of filtration to deal with manganese and aluminium in raw water, and improved disinfection

Completion by: August 2011

Bryn Cowlyd

Llanrwst, Llandudno, Colwyn Bay, Llanddulas, Llansannan, Llanfair Talhaearn

Investment
Enhanced water treatment works - £3. 0m, UV and chloramination

Work proposed
UV and new chloramination plant to be installed at Service Reservoir site.

Benefits
UV deactivates any cryptosporidium oocysts in the water. Chloramination provides extended disinfection in long rural systems and reduced the risk of Trihalomethane (THM) formation

Completion by: June 2010

Capel Curig

Investment
UV installed - £ 1.5m

Work proposed
UV to be installed plus provision of new standby treatment units

Benefits
UV deactivates any cryptosporidium oocysts in the water.

Completion by: UV installed Feb 2009

Cilfor

Porthmadog, Penrhyndeudraeth, Croesor

Investment
UV installed - £0. 35m, New water treatment works - £4. 15m
Work proposed
UV to be installed. Build new coagulation stage and pressure filtration
Benefits
UV deactivates any cryptosporidium oocysts in the water. New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Feb 2009
New Water Treatment Works Sept 2011

Cwellyn

Beddgelert, Penygroes, Caernarfon, Llanberis, Bangor, South Anglesey
Investment
New water treatment works - £ 13m
Work proposed
UV already installed.
Build new coagulation treatment stage, new first stage filtration and connection to existing filters
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Sept 2008
New Water Treatment Works completed March 2010

Cwm Dulyn

Nebo, Bwlch Derwin; Glynnog Fawr
Investment
UV treatment and changes to chemical dosing - £0. 5m
Work proposed
UV installed. Alterations to lime and orthophosphoric dosing points
Benefits
UV deactivates any cryptosporidium oocysts in the water. The changes in chemical dosing will improve manganese removal.
Completion by: UV installed Feb 2009
WTW upgrades to be completed by June 2010

Cwmystradllyn

Porthmadog, Criccieth, Trefor, Lleyn Peninsula
Investment
New water treatment works - £ 11.5m. UV Treatment - £0.7 m
Work proposed
UV installed. Build new treatment stage to clarify the water before existing filtration
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed May 2009
New Water Treatment Works Dec 2013

Eithinfynydd

Llanbedr, Dyffryn Ardudwy, Llanaber, Barmouth
Investment
New water treatment works - £8.6m, UV Treatment - £0. .28m
Work proposed
UV installed. Build new coagulation treatment stage, new first stage filters and replacement of existing filtration plant.
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Feb 2009
New Water Treatment Works March 2011

Llannerch/Glascoed

Abergele, Towyn, Rhyl, Rhuddlan, St Asaph, Rhuallt, Bodfari, Trefnant, Bodelwyddan
Investment
New water treatment works - £ 8.4m, UV Treatment - £0. 5m
Work proposed
UV installed. Build new filtration stage at Glascoed WTW
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Feb 2009
New Water Treatment Works June 2013

Llidiardau, Bala

Bala, Llanuwchlyn, Cefn Ddwysan, Llandderfel
Investment
New water treatment works - £ 6.7m, UV Treatment - £0. 26m
Work proposed
UV installed. Build new treatment stage to clarify the water before existing filtration
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Feb 2009
New Water Treatment Works Sept 2012

Mynydd Llandygai

Caernarfon, Llanberis, Bangor, South Anglesey, Deiniolen, Bethesda
Investment
New water treatment works - £10. 8m, UV Treatment - £0. 1m
Work proposed
UV installed. Build new treatment stage to clarify water before existing filtration
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Sept 2008
New Water Treatment Works Sept 2010

Pen y Cefn

Dolgellau, Rhydymain, Llanfachreth, Ganllwyd, Brithdir, Bont Ddu, Fairbourne
Investment
New water treatment works - £ 7.7m, UV Treatment - £0. 3m
Work proposed
UV installed. Build new treatment stage to clarify the water before existing filtration
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Completion by: UV installed Feb 2009
New Water Treatment Works June 2011

Rhiwgoch

Harlech, Llanfair
Investment
New water treatment works £8.8m, UV Treatment - £0. 53m
New water mains £3.0m
Work proposed
UV installed.
Build new treatment stage to clarify the water before existing filtration New link main and replacement of existing raw water main
Benefits
UV deactivates any cryptosporidium oocysts in the water.
New treatment stage will deal with changing raw water conditions and consistently meet all water quality standards.
Increase in works capacity to secure water supplies during high demand
Completion by: UV installed Feb 2009
New Water Treatment Works March 2010
New water mains Sept 2009