Water Calculations – Internal Portable Water Usage
Under current Building Regulations (Approved Doc G), all new dwellings are required to demonstrate a minimum level of water efficiency and produce a water calculation for Building Control handover.
Housebuilders can illustrate compliance through two routes:
either using white goods and sanitary ware which meet individual maximum water usage targets;
or via the calculation method which enables housebuilders to optimise water usage more efficiently as preferred across their appliances.
Local Planning Authorities can also request a higher level of water efficiency which can be demonstrated in the same manner.
Water Calculations take into Consideration:
- WC’s
- Taps
- Washing machines
- Showers
- Baths
- Dishwashers
- Insinkerators
- Water Softeners
- Greywater recycling
- Rainwater recycling
- An allowance for external water use
- Flow rates
SES can carry out your water calculation the following stages as required:
- Design Calculations– to enable the housebuilder to design and purchase white goods and sanitary ware to submit as part of your planning application.
- As Built Calculation– to provide to Building Control to satisfy Approved Doc G requirements.