Ofwat

What Ofwat does

Contact Ofwat

Types of regulation

Official guidance from Ofwat

Curated guidance documents to help you understand your obligations.

• 2016 non-household retail price review - Ofwat
  Detailed Guidance England and Wales
• Market codes - Ofwat
  Detailed Guidance England and Wales
• New connections – Welsh undertakers - Ofwat
  Detailed Guidance England and Wales
• 2014 price review - Ofwat
  Detailed Guidance England and Wales
• 2019-20 data - Ofwat
  Detailed Guidance England and Wales
• 2020-21 data - Ofwat
  Detailed Guidance England and Wales
• 2020-25 data - Ofwat
  Detailed Guidance England and Wales
• 2021-22 data - Ofwat
  Detailed Guidance England and Wales

View all 348 guidance documents →

Legal framework

Legislation that Ofwat directly enforces.

Primary legislation

• Water Industry Act 1991 Act 1991
• Competition Act 1998 Act 1998
• Enterprise Act 2002 Act 2002
• Water Act 2003 Act 2003
• Water Act 2014 Act 2014
• Environment Act 2021 (enhancement) Act 2021

Secondary legislation

• Water Industry (Charges) (Vulnerable Groups) Regulations 1999 UK Statutory Instrument 1999
• Water Mergers (Modification of Enactments) Regulations 2004 UK Statutory Instrument 2004
• Drought Plan Regulations 2005 UK Statutory Instrument 2005
• Water Supply and Sewerage Services (Customer Service Standards) Regulations 2008 UK Statutory Instrument 2008
• Water Industry (Specified Infrastructure Projects) (English Undertakers) Regulations 2013 UK Statutory Instrument 2013
• Water and Sewerage Undertakers (Exit from Non-household Retail Market) Regulations 2016 UK Statutory Instrument 2016
• Network and Information Systems Regulations 2018 UK Statutory Instrument 2018

Related legislation

Legislation connected to Ofwat's remit but not directly enforced — establishing Acts, amendments, referenced legislation, and context.