Offices Nationwide 

Wrexham - Water Calculations - 01978 633 079

The counties covered by this office are:
Denbighshire, , Wrexham County, Conwy County, Flintshire, Gwynedd County,

Phone Number: 01978 633 079 Email:

Wrexham Water Efficiency Calculations The Requirement G2 and Regulation 36.

If you are building a new dwelling or forming a dwelling by material change of use in Wrexham you are required by building regulations Part G to design the appliances to use no more than 125 Litres of water per person per day.

This part of the building regulations states "Reasonable provision must be made by the installation of fitting and fixed appliances that use water efficiently for the prevention of undue consumption of water". This methodology is in support of The Code for Sustainable Homes, May 2009 onwards and the Building Regulations 2000.

The Council in Wrexham can set their own targets for water consumption.

If you're doing these calculations as part of a Code for Sustainable Homes assessment, you may be required to use no less than 80 litres per person, per day.

  • Code for Sustainable Homes (Level 1/2) 120 litres/person/day
  • Code for Sustainable Homes (Level 3/4) 105 litres/person/day
  • Code for Sustainable Homes (Level 5/6) 80 litres/person/day

We can provide same or next day turn around on all Water Calculations, all you need to do is provide us with all of the information for the fittings. We even provide you with an easy to understand checklist to help you know what information is required!

If you would like a quote for Water Calculations / Water Calculations call one of our regional offices and speak to one of our experts on 01978 633 079 for a formal quotation or email

Our other services include:
SAP Extension Calculations, Energy Statements, Sustainability Statements, Thermography, SAP Calculations (TER/DER), Environmental Noise, Air Leakage Testing, On Construction EPC, Acoustic Testing, Part E, Part F Ventilation Testing, Code 4 Sustainable Homes, SAP Conversion Calculations,

Water Calculations can also be known as:
Part G, Water Usage Calculation, Part G Water Calc, Part G Water Calculation,

E2 Specialist Consultants
July 22 at 5:05pm
One of our office-based consultants is hard at work on the SBEM calculation for a commercial new build in Bristol, Avon. You can get yourself an SBEM quote from our website:

E2 Consultants Delivering compliance solutions for Architects & Developers    Head Office E2 HOUSE, South Park Way, Wakefield 41 Business Park, WF2 0XJ    Questions? Call: 0800 043 8100