Building and developing

Whether you're building your own house or planning a housing or commercial development, we'll work with you to make sure your water and wastewater plans are right for your project. If you know which service you want, there is information on all of our water and wastewater services below.

Before you start, check if your development is in our area.

Homeowner renovations


Guidance for replacing lead water pipes, connecting to mains water supply and building an extension.

Small housing development

Small housing developments

Guidance for self-build projects and property developers building up to five houses.

Building a large development

Larger developments

Information for companies building more than five houses, a commercial development or flats and apartments.


Self-lay schemes

Guidance and forms for developers and contractors.

New appointments and variations

New appointments and variations (NAVS)

NAVs can provide water and sewerage services in some areas.

Our services