Information on NAVs

An alternative to SLO’s and United Utilities, New Appointment and Variations (NAVs), also called New Appointees, can provide wholesale water and/or sewerage services for a specified area.

If a developer chooses a NAV to provide wholesale services, the NAV will need to apply to become a service provider for a specified area. Once granted they will be responsible for the ongoing operation and maintenance of onsite water and/or wastewater infrastructure, replacing the existing local water and/or sewerage company.

Further information is available on Ofwat's website

Our NAV bulk charges for 2019/20 can be accessed here (PDF 745 KB opens in a new window) . You can also use our calculator to calculate the bulk charge for your site

Earlier this year, we formally consulted on our indicative NAV charges. The consultation document is available here. Please note this consultation is now closed. The outcome of this consultation can be accessed here (PDF 639 KB opens in a new window).