Search Menu Toggle
Close Menu

Working with the environment, our vision is to be the leading community-focused water company.

We understand the significant impact of our operations and are committed to continual improvement across this multi-faceted arena. As such, we are keen to promote and support the inclusion of water efficiency approaches in new developments throughout our region.


Water efficient development credit

We currently offer a discount to the infrastructure charge for each new home where evidence of a water efficiency design to a standard of 110 litres (or less) per person per day is expected.

For the charging period 2024/25 our water efficient development credit is £589. Find out more about water efficient development credit in our New Connections Charging Arrangements.

To qualify for this discount, we require you to provide evidence showing the intention to install water efficient fittings within your application submission. Unfortunately, we are unable to add this discount at a later stage in the process. For further guidance and an example of a water efficiency calculator, please see page 38 of The Building Regulations 2010: Sanitation, hot water safety and water efficiency.

How to calculate and confirm that you’re compliant to 110 litres or less per person per day

You can calculate water usage using the Water Calculator for New Dwellings, developed in support of the Building Regulations Approved Document part G. The level of water efficiency of a property must be evidenced using the calculator and provided as part of your application process.

We will only accept calculations that comply with the Government's National Calculation Methodology for assessing water efficiency in new dwellings using the above link. For more information click here.


Bulk supply charges for NAVs

Where a NAV installs infrastructure that results in materially lower consumption per property than usual, for example because the site features on-site resources, grey water recycling, or rainwater harvesting systems. In this case (and provided the water efficiency systems remain in working order) it may be appropriate to reflect in NAV bulk supply charges the avoided long-run incremental costs of water resources in addition to the usual deductions for onsite ongoing costs.

We operate in a water stressed area with ever growing concern over our environment, as such we are increasing our focus on implementing and incentivising environmental protection initiatives.

Enable Recite