# Water 4.1 Building Systems Water Use Reduction
# Applies to
Non-residential development
# Objective
Ensure the efficient use of water, to reduce total operating potable water use and to encourage the appropriate use of alternative water sources for cooling and fire testing systems.
# Summary
Points are allocated by the water calculator based upon an estimated reduction in potable (mains) water consumption due to the recycling of water used for fire testing and building systems such as evaporative cooling or air conditioning chillers. Estimated reductions are to be at least 80%. .
This includes collecting test water for re-use, either with the fire test system or for another fit-for purpose use. ‘Fire testing systems’ refers to testing of hydrants, hose reels, sprinklers. Refer to VBA PN-61-2018.
If the building does not have a sprinkler system and water based heat rejection systems, this credit is 'N/A' and should be scoped out.
# Documentation & evidence required
- Site / Floor plans showing location of fire test system water tank and specifications including tank capacity and intended re-use.