Who we are and what we do

Dee Valley Water was originally formed in 1997 with the merger of the former Chester Water Company and Wrexham Water Company.  Dee Valley supplies approximately 62million litres per day to over 258,000 customers.

In February 2017 Dee Valley Water became part of Severn Trent plc.  For any media enquiries please contact the Severn Trent Press Office on 02477 715460.

Our regulators

In common with the other 24 water companies in England and Wales, we are regulated by legal statute. The economic regulator, OFWAT, is responsible for setting price limits that we can apply. It is also responsible for monitoring our performance and uses the data supplied to compare economic and performance levels across the industry.

The regulator responsible for drinking water quality is the Drinking Water Inspectorate which acts on behalf of the National Assembly for Wales in respect of Dee Valley Water.

The Environment Agency oversees our environmental performance, in particular it regulates the abstraction of water from our sources.

Every year each of the regulators publishes reports, which compare our performance against national standards covering water quality, levels of service and availability of resources and other parameters.

Company structure

Severn Trent Summary Group Structure

This chart sets out the ownership structure within the Severn Trent group, showing those companies that connect our regulated and operating companies to Severn Trent Plc.

All entities are incorporated in England and Wales and are 100% owned unless otherwise stated.

Click on the tumbnail below to enlarge the company structure or you can download it here.