Part G Water Calculations

The latest building regulations set a maximum of 125 litres per person / day for internal water use. This is enforced by Approved Document G (sanitation, hot water safety and water efficiency).

We can provide a full report and certificate to help you comply with Building Regulations,

based on "The Water Efficiency Calculator for New Dwellings" - The Governments national calculation methodology.

Which will include-

Notice of Water Efficiency - as required by 37(1)
Summary page together with all corresponding completed tables

Comprehensive Guide to Part G Water Calculations by Southern Assessors

Part G water calculations are essential to ensure you comply with the UK Building Regulations; these regulations aim to promote sustainability and effective or better water usage in newer establishments and developments.

Southern Assessors offers skilled, expert guidance and services to let developers, architects and homeowners quickly meet these vital standards and requirements. These Part G water calculations are a critical standard to promote urban residential water saving as a social activity.

What are the Part G water calculations?

Under this document called 'Part G of the Building Regulations', all your new dwellings must try their level best to keep their highest daily water usage only to 125 litres per person. This particular standard also provides several provisions for water consumption while using showers, taps and toilets, appliances and any outdoor use.

However, for housing estates, especially those properties subject to planning conditions and those built to high sustainability standards, this standard can be even stricter, such as 105 litres/person/day.

Why is it even important to meet such standards?

Water efficient and water-conserving actions are not only vital for resource conservation and environmental protection but can also strain local water supplies and lead to extreme energy wastage due to constant heating and pumping.

Your compliance with Part G guarantees not only the complete and correct application of this legislation but also promotes nature-friendly living values; this can be made possible by aligning your properties with modern trends in conservation.

The Calculation Process

Proper fixtures and fittings assessments: In these reviews, individual taps, showers, or even other water-using appliances are properly assessed based on their flow rates and usage patterns or activities to make an estimate of the amount of wastage. For both default and bespoke installations, we have meticulously developed a precise methodology to calculate your variables.
Greywater and Rainwater Harvesting Systems: Houses that make it a point to install these reuse and recycling mechanisms can see up to a big reduction in their overall consumption of water. The calculations we make also include these nuances to provide you with a precise water efficiency figure.
Production of a Compliance Report: After we compile a full overview of water consumption, we provide you with the reports. We also make it a point to list all the remedial measures that you can take to meet these standards.

Challenges and Solutions

Balancing efficiency and functionality: Sometimes low-flow fixtures can also compromise your building's user experience. Therefore, the selection of high-quality, efficient fixtures can help you in this regard. We constantly offer this advice to our clients who seek to maintain performance.
Integrated Water Recycling Systems: Rainwater and greywater systems might act as confusing math for some home or property owners. But you shouldn't let your water recycling system bother you at all; We can perfectly specify some solutions that will be tailored to fit in neatly with your systems during any compliance check whatsoever.
Navigating Local Conditions: Some planning authorities also impose more stringent standards. We are skilled in meeting such standards as well; we will also provide for your regional demands such as customized and personalised assessments of the properties for planning clearance and other major purposes.

Benefits of Working with Southern Assessors

Expertise: Since we have accumulated great experience in sustainability and compliance testing, we can accurately and reliably help in calculating your water efficiency levels if you need us.
Cost-Effective Solutions: Our team will help you in finding a cost-saving route to meet the required standards. It doesn't have to cost an arm and a leg at all.
Fast Turnaround: We also provide assessments very quickly so that your project doesn't get delayed by any nasty surprises.
Comprehensive Services: With our Part G calculation services, we also provide air pressure testing and SAP calculations, thus providing you with the perfect solution for all your building compliance needs!

If you too are looking for water calculations in London or Dorset or anywhere else in the UK, contact us to discuss how we can help you.