Building and developing

Coronavirus update 

We have a number of staff impacted by the coronavirus pandemic, so it may take us a little longer
to answer your call.  Alternatively, you can use our Live Chat service on the right of this page during
normal working hours or you can email us at and one of our
customer service advisors will respond to your enquiry within the next 24 working hours.

Thank you so much for your support and please take care of yourselves, families and communities.

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.

If it’s a new water supply you need, this leaflet explains our charges and there’s some useful information to read before you start work.

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, commercial and agriculture

Information for building more than five houses, commercial developments, flats and apartments or agricultural use.


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