The Environment Agency is responsible for maintaining or improving the quality of fresh, marine, surface and underground water in England and Wales.
Drinking water
Water is supplied in the borough by Thames Water and Affinity Water.
If the water supply is contaminated, follow safety advice from your local water company. They will usually make alternative supplies available.
Complaints about the quality of drinking water should be made to your supplier.
More advice about water quality complaints is available from the Consumer Council for Water website.