Water Efficiency Calculations
Lincoln, Lincolnshire & East Midlands 

Our Services – Water Efficiency Calculations 

At AirMetric, we support builders, developers and homeowners in delivering sustainable, regulation-compliant homes. Our Water Efficiency Calculation service is designed to ensure new dwellings meet mandatory UK water consumption targets while maintaining performance and practicality.

 

What are Water Efficiency Calculations?

Water Efficiency Calculations assess the predicted daily water usage of a new dwelling to confirm compliance with UK Building Regulations.

In England, this forms part of compliance with Building Regulations Part G (Sanitation, hot water safety and water efficiency). The standard requirement limits water consumption to 125 litres per person per day, with some local authorities requiring the enhanced target of 110 litres per person per day.

The calculation considers the flow rates and capacities of:

• Taps

• Showers

• Baths

• WCs

• Appliances (dishwashers and washing machines)

 

Why Choose Water Efficiency Calculations?

Regulation compliant – ensures your development meets Part G requirements.

Supports planning conditions – essential where local authorities require the 110L target.

Cost-effective solutions – we advise on fixture specifications to help you meet targets without unnecessary upgrades.

Avoid delays – accurate calculations prevent issues at Building Control stage.

 

What We Provide:

Full water efficiency calculations using approved methodology.

Assessment of sanitaryware and appliance specifications.

Guidance on selecting compliant fittings where required.

A clear, professional report suitable for Building Control submission and planning compliance documentation.