Wat 01 - Water consumption

Sanitary fittings used in religious practices – updated - KBCN1624

Such fittings should not be included in the scope of this Issue. Please refer also to KBCN0418 This guidance relates to fittings and facilities used in some religious practices, for example, for washing before prayer.

03 Nov 2023 - Updated. Previous guidance was incorrect and contradicted the approach outlined in KBCN0418

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Shower with multiple shower heads - KBCN0855

To calculate the water use of a shower with more than one shower head, one of the following should be done:

• If all of the shower heads can be turned on at once, the flow rates should be added up.
• If the shower heads can only be used one at a time, the highest flow rate should be used

22 Feb 2024 - Applied to BIU, BREEAM NC and RFO standards

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Showers and taps where use is physically time-limited – Calculating flow rates - KBCN1690

Where a timer is used to physically limit the use of showers or taps within a set period of time, this can be used as the basis for calculating a reduced flow rate. For example, where use is limited to 2 minutes, 4 times per hour, for a shower or tap with a flow rate of 8 l/minute, the flow rate can be calculated as follows: 8l/minute x 8 minutes/hour = 64 l/hour = 1.07 l/minute

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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.

27-Mar-2024 - Title and text updated to broaden definition. Scheme applicability updated.

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Washing machines and dishwashers – Water consumption data - KBCN1571

The water consumption data used to demonstrate compliance may be based on the lowest full wash cycle (i.e. not a pre-wash cycle, for example).

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