Developer Services
NAV Wastewater Sewer Network Ownership Solutions for Residential Developments
NAV Wastewater Sewer Network Ownership Solutions for Residential Developments
Indevor Water is an entry into the New Appointments and Variations (NAV) Market, introduced to provide innovative, pioneering Sewer Network Ownership Solutions. New Appointments & Variations, alike Incumbent Water Companies, are entities that are licenced under powers delegated by the Secretary of State to provide Water Supply and/or Sewerage Services to Customers in England and Wales. NAVs are duly regulated by Ofwat, the Water Services Regulation Authority, and other Stakeholders including the Environment Agency, Defra, the Drinking Water Inspectorate, MOSL and the Consumer Council for Water.
Indevor Water is part of the Indevor Group of Companies, specifically operating within the Infra Estates Division, being the UK’s leading Private Authority that specialises in the ownership and long-term management of Onsite Infrastructure.
Indevor Water are the Market’s Exclusive Operator of the Legacy Sewer Auto-Adoption Model.


Indevor Water represents Indevor Estates’ creation of a NAV Model to address the Development Industry’s longstanding need for a solution to address Unadopted Legacy Sewer Networks.
We work with Housebuilders and Developers to provide Private Sewer Adoption Solutions, ensuring that Residential Developments and their Residents access an effective and safe Wastewater Sewer System.
Our Unique Standing
The Auto-Adoption Model was created and is exclusively offered by Indevor Water, developed and approved in its capacity owing to a number of features associated with our company’s unique credentials, including:
















