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Reviewed 25.10.2026England focus

Jasmine Gokmen
In forceWater & Sanitation

Approved Document G: Sanitation, hot water safety and water efficiency

Water use, hot water and sanitary facilities

Covers cold water supply, water efficiency, hot water safety, sanitary conveniences and washing facilities, with a tighter optional water-efficiency standard.

Also known as: AD G, Approved Document G, water efficiency

Jurisdiction
England
Document type
Statutory guidance
Edition
2015 edition incorporating 2024 amendments
Source updated
1 October 2024
Applies from
1 October 2024 (2024 amendments)
Topic
Water & Sanitation

Key requirements

  • New dwellings: 125 litres per person per day.
  • A local planning condition can require the tighter 110 litres per person per day standard.
  • Hot water systems must include safety measures such as temperature control.
  • Sanitary conveniences and washing facilities must be adequate for the building's use.
  • The 2024 amendments align the guidance with Part T.

Performance at a glance

Standard
125 l/person/day
Optional tighter standard
110 l/person/day

Applies to

New dwellings and relevant building work in England.

Official source

GOV.UK — Approved Document G

Open official source

Related records

Part H · Drainage and waste disposalPart T · Toilet accommodationPart M · Access to and use of buildings

Reviewed 25 October 2026. This summary is an editorial reference, not legal advice. Check the current official text and confirm the approach with building control before relying on it. Browse all 35 records.