Assessed Measured Charge | Dwr Cymru Welsh Water
Dwr Cymru Welsh Water

Thursday, 20th February – 10:00

We continue to deal with the impact of severe weather and flooding over the last few days, particularly in the Monmouth area.

We have accessed our water treatment works at Mayhill and assessing the damage so that we can get works back up and running. This will take some time to do, given the impact of the flooding and the work needed to bring the operation back into normal service.

In the meantime, we are continuing our extensive tanker operation throughout the town to maintain supplies to customers. This has involved a fleet of more than 40 tankers, which have been pumping water into the system and supplies have been kept going for the vast majority of our customers. We are making every effort to maintain this in the coming hours and days, while we get the works up and running.

Some customers in Monmouth have been asking our colleagues in the area if they need to boil their tap water: our answer is no. We’re providing bottled water as a precaution in case supply is interrupted and for a small number of customers without water.

We have also set up three bottled water stations for those who have seen their supply interrupted. These will be open from 8am til 8pm and can be found at:
• Monmouthshire Comprehensive School – Dixon Road – NP25 3YT
• Redbrook Road (opposite Lidl’s car park entrance) - NP25 3LY
• Trellech Primary School - NP25 4AX

We ask those who still have water not to visit these sites, as we need to prioritise customers with an intermittent supplies.

We have delivered bottled water to all properties as a precautionary measure and will also continue to deliver bottled water proactively to our vulnerable customers on the Priority Services Register, such as the elderly, disabled, or those with young children.

We want to thank our customers for bearing with us while we carry out this work to keep things going.

We will post regular updates here and social media.

My Account Water Meter Assessed Measured Charge

What is an Assessed Measured Charge?

It is a specially reduced charge, at a fixed amount, in the event that a water meter cannot be fitted. Think of it as a pretend metered bill.

Who is it for?

It is reserved for our household customers who : -

  • have asked for a meter but we’ve been unable to install one.
  • have recently moved into a property that has an Assessed Measured Charge because we know from a previous visit that we are unable to install a meter.

When is an Assessed Measured Charge not given?

Sometimes we may ask you to do some work to enable us to fit a meter, such as removing boxing or panelling. If you choose not do this work then we will continue to bill you on an unmeasured charge.

If the standard unmeasured charge for your property is lower than the Assessed Measured Charge.

If your property is empty or not occupied for long periods of time or under renovation.

How is an Assessed Measured Charge calculated?

We have looked at lots of other customers’ bills who have meters and who have similar circumstances to you. We have combined all of their bills and calculated their average.  This average becomes the fixed Assessed Measured Charge.

We have two bands, a low band and an average band.  The banding is set by the number of appliances which use water in your property and the number of occupants.

Why is it different to the value given to me by the on-line calculator?

We ask you to be as honest as possible when you complete the on-line calculator.  Lots of us actually use more water than we think we do. We are probably conservative when we fill out the calculator and this gives us a low estimate, we know this happens because of our customers who have had meters installed and who have told us that their bills are higher than the calculator predicted.

The Assessed Measured Charge is also not specific to you and your circumstances, it is an average fixed charge. See How is an Assessed Measured Charge calculated?

I have just moved into a property with an Assessed Measured Charge, what happens next?

We may ask you to tell us some information about the number of people that live in your property and the number of appliances you have. If we think that the standard unmeasured charge is better for you, that is the charge you will have.

I have just moved into a property with an Assessed Measured Charge, why can’t I have a meter?

We know we are unable to fit a meter because we have tried to do this previously. If you have altered the plumbing in your property and you think that this means we are now able to fit a meter, then contact us and we will confirm why we couldn’t fit a meter and whether it is now reasonable for us to visit to try to install one for you.

Can I go back to the standard unmeasured charge for my property?

Yes if it is the cheaper option for you – we would have already checked this before giving you the Assessed Measured Charge. Also you can ask us not to have this charge and to have the unmeasured standard charge for your property within 2 years of the date that we started charging you on the Assessed Measured Charge – why? because if you had a real meter, we would give you this option.

When will I receive my bill?

If you have just moved into the property, then you will receive it shortly after.

If we have been out to fit a meter but we have been unable to do so, then within 30 days of our visit we will switch you to the Assessed Measured Charge and a new bill will be sent. If you were on any payment plan with us, this will automatically be recalculated.

Will you tell me if I cannot have an Assessed Measured Charge?

Yes and we will tell you the reason why and what will happen next.

I pay my water bill to you, but it includes a sewerage charge on behalf of Severn Trent Water Company or Hafren Dyfrdwy– what happens?

Severn Trent Water and Hafren Dyfrdwy’s sewerage charges are different to ours, all water companies do different things. If we give you our Assessed Measured Charge for water, we will give you the most suitable sewerage charge equivalent that Severn Trent Water and Hafren Dyfrdwy has. 

Here are our household Assessed Measured Charges for April 2019 to March 2020

Water £    
No. Occupants Average Use Low Use
1 130.13 112.12
2 175.86 150.92
3 & above 228.51 192.48


Sewerage £  
Average Use With Surface Water Discount
194.57 158.49
245.68 203.82
304.54 256.02


Sewerage £  
Low Use With Surface Water Discount
174.43 140.64
217.80 179.10
264.27 220.31

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