For those that are not aware of it water sure is a scheme for disabled people who use more water because of their illness or for families on low income (including working tax credits) with 3 or more kids aged under 19 and on a water meter. All you need to do is fill in a form and your bills will be capped at a set rate depending on your water authority. It's worth it for some people for others it's not. The average cap is around £35 per month. I pay £56 per month with Yorkshire water so it would be worth it for me!
You must have a water meter and be entitled to one of certain SS benefits.