What Ofwat does
Economic regulator for the water and sewerage sectors in England and Wales. Sets price limits, monitors service quality, and enforces environmental duties. Protects consumers' interests.
Contact Ofwat
- Phone
- 0121 644 7500
Official guidance from Ofwat
Curated guidance documents to help you understand your obligations.
2016 non-household retail price review - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
Market codes - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
New connections – Welsh undertakers - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
2014 price review - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
2019-20 data - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
2020-21 data - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
2020-25 data - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
2021-22 data - Ofwat (opens in a new tab)
Detailed Guidance · England and Wales
View all 348 guidance documents (opens in a new tab)
Legal framework
Legislation that Ofwat directly enforces.
Primary legislation
Secondary legislation
Related legislation
Legislation connected to Ofwat’s remit but not directly enforced — establishing Acts, amendments, referenced legislation, and context.