It does this by setting price limits on what we can charge you, while protecting the standard of service you receive.
It also encourages companies to be more efficient and aims to raise the standards of those that need to improve.
Ofwat sets price limits so that our customers should pay no more than is necessary to enable well-managed companies, like Southern Water, to finance the services they deliver.
The Consumer Council for Water was set up in 2005 to represent the views of water and sewage customers in England and Wales.
We are also governed by strict environmental regulations.
Some of the information we publish is regulatory, and can be found below.
Advice and information
Our complaints procedure
Our promise to you
Life cycle of a leak
Bin it, don't flush it
Codes of practice
Code of practice for household customers