What is Part G Water Calculations? (Cheaper rates)

Part G Water Calculations and EPCs for new build houses and flats

Part G Water Calculations are a legal necessity to ensure that a new building is water efficient. This indicates that the home must not utilize more than 125 litres of potable water per person per day.
Water output is important when it comes to energy consumption. Part G Water Calculations demonstrate that any new building project wastes as minimum energy as possible. In the water efficiency calculator, each code level set a maximum limit on internal water use, which is illustrated by measurements based on occupancy, fittings and flow rates.

The default limits are configured as follows:

Part G Water Calculations is needed to produce a Predicted Energy Assessment required by the law to be compliant with Part G of the Building Regulations.

• Levels 1 & 2-Less or equivalent to 120L p/day
• Levels 3 & 4- Less than or equivalent to 105L p/day
• Levels 5 & 6-Less or equivalent to 80L p/day