Wat10 Reducing utility-supplied water consumption

(2 points available)

Aim

To minimise unnecessary water consumption by reducing the demand for utility-supplied water within the asset.

Question

Does the asset harvest and reuse greywater, blackwater or rainwater?

Credits	Answer	Select a single answer
0	A	Question not answered
0	B	No
2	C	Yes

Assessment criteria

Criterion	Assessment criteria	Applicable answer
1	Filtering Where legislative requirements prevent use of non-utility supplied water within the asset, this issue can be filtered out	All
2	Greywater, blackwater or rainwater should produce a reasonable reduction in the consumption of utility-supplied water.	C

Evidence

Criteria	Evidence requirement
-	The evidence below is not exhaustive, please also refer to the ‘BREEAM evidential requirements’ section in the scope of the Guidance for appropriate evidence types which can be used to demonstrate compliance.
All	Photographic evidence of non-utility supplied water source.
All	Manufacturer information.
All	Where legislative requirements prevent the use of non-utility supplied water, a copy of the relevant legislation.

Definitions

Blackwater:

Wastewater that has been discharged from kitchen and utility sinks, urinals and toilets within the asset..

Greywater:

Water that has been discharged from all sources other than kitchen and sewage within the asset.

Utility-supplied water:

Water that has been provided by an organisation that supplies a public service under regulation by the Government (e.g. mains water)

Additional information

Uses of non-utility supplied water

Usage of rainwater and greywater include (but are not limited to): 

• Irrigation for landscaping 
• Toilet flushing 
• Car washing 
• Washing clothes 
• Business process/production.

© Copyright Building Research Establishment Ltd 2021