Part G Water Efficiency Calculations

Did you know, new dwellings must not exceed the new water efficiency standard of 125 litres per person per day?

Under Part G of the Building Regulations, all new homes are now required to comply with water efficiency targets.

Items considered within the Part G Water Efficiency calculation include:

  • W.C’s.
  • Sink Taps (bathroom, W.C, kitchen, utility, en-suite).
  • Baths.
  • Showers.
  • Dishwasher.
  • Washing Machine.
  • Waste Disposal Units.
  • Water Softeners.
  • Rain Water Harvesters.


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