Skip to main content
Policy paper

NSIPs: biodiversity gain statement for water resources

Sets out the biodiversity net gain (BNG) requirements for water resources nationally significant infrastructure projects (NSIPs).

Applies to England

Documents

Nationally significant infrastructure projects: biodiversity gain statement for water resources

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email defra.helpline@defra.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

This biodiversity gain statement sets out how water resources NSIPs must calculate, deliver and report on BNG.  

BNG will become mandatory for NSIPs from 2 November 2026. From that date, this biodiversity gain statement will have the same effect as if it were included in the National Policy Statement for Water Resources Infrastructure

Read guidance about BNG for NSIPs.

Updates to this page

Published 2 June 2026

Sign up for emails or print this page