Dee Valley Water was formed in 1997 with the merger of the former Chester Water Company and Wrexham Water Company.
It covers a supply area of 831 sq km in North East Wales and the North West of England. The firm supplies around 62 million litres of water per day to over 258,000 customers.
Water is treated at six treatment works and the water is supplied through a 1,940km network of water mains, 25 pumping stations and 37 clean water storage reservoirs. All the water that Dee Valley Water purifies and supplies to its customers comes from rainfall.