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Estimates Only: This calculator provides estimates based on typical usage. Contact your water company for exact rates.
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WaterSure caps the water bill of households on a meter who get certain benefits and need a lot of water, because of a large family or a medical condition.
Sources: CCW Water Mark; CCW, What is WaterSure?
All three must apply:
Other conditions that mean using much more water than average can qualify too; companies ask for details from a doctor. High use from a hose or sprinkler, or refilling a pond or pool over 10,000 litres, doesn't count (Citizens Advice).
Your bill is capped at your water company's average household bill. If your metered bill is below the cap, you pay only for what you use. CCW says 10 companies go further and cap at their average metered bill, which is almost always lower (CCW review).
Help starts from the beginning of the billing period in which you apply, and you may have to show each year that you still qualify (Citizens Advice).
Company averages for 2026/27 are on average water bill UK.
Not every household that struggles qualifies. Water companies also run social tariffs, payment breaks and debt schemes: see help with water bills. To see whether a meter alone would cut your bill, use the water meter calculator.
A government scheme that caps the water bills of households on a water meter who are struggling to pay and use a lot of water, because of a medical condition or a large family (CCW).
You must be on a water meter (or waiting for one, or on an assessed charge because one can’t be fitted), someone in the household must get a qualifying benefit such as Universal Credit, Pension Credit or Housing Benefit, and you must either get child benefit for three or more children under 19 living with you or use extra water because of a medical condition.
CCW says 260,800 metered households got WaterSure in 2024-25, with an average bill reduction of £325. Your saving depends on your company’s cap and your own use.
Yes, or be waiting to have one fitted, or be paying an assessed charge because a meter can’t be fitted at your property (Citizens Advice).
In February 2026 the UK Government announced it will increase both the number of households eligible and the level of support; changes are expected in 2027.
CCW says the two water companies in Wales offer similar support through their own schemes on a voluntary basis. Welsh Water customers are covered by WaterSure Wales.