New Construction / UK / 2014 / 05-Water /
Wat 04 – Water Efficient Equipment
Information correct as of 31stJuly 2025. Please see kb.breeam.com for the latest compliance information.
Government Buying Standards for Water - KBCN1357
The Government Buying Standards for water are relevant to government departments and organisations. Although they are best practice, they are not a requirement for buildings that are not part of the public sector.
Manual watering - KBCN0553
Where the design team can justify that manual watering provides a reduction in unregulated water consumption, this can be considered as an acceptable method for reducing unregulated water use.
Swimming pools - KBCN0812
Water use dedicated to swimming pools is considered an unregulated water use and should be included in the assessment of this issue.
Temporary irrigation systems - KBCN0147
Temporary watering arrangements set up purely to allow plant species or a green roof to establish are acceptable for plants relying on natural precipitation during all seasons of the year. Where this is the case, the ecologist's report must confirm the plant species and the expected time for recommended plant species to establish themselves i.e. time period for temporary watering arrangements.
Using water from natural underground sources to offset water consumption - KBCN00094
Water from natural underground sources (for instance aquifer water accessed via boreholes) cannot be used to offset:
- NC / RFO: potable water consumption.
- IU: utility supplied water consumption.
A significant amount of water used for public consumption is already drawn from aquifers. Private boreholes may be drawing water from the same sources as public utility companies.
29-Jul-2025 - Applied to Issue Wat 04
27-Mar-2024 - Title and text updated to broaden definition. Scheme applicability updated.
Information correct as of 31stJuly 2025. Please see kb.breeam.com for the latest compliance information.