Dee Regulation Scheme

53°16′34″N 3°08′49″W / 53.276°N 3.147°W / 53.276; -3.147 (Dee estuary) The Dee regulation scheme is a system of flow balancing and quality management along the River Dee managed by a consortium of the three largest water companies licensed to take water from the river, United Utilities, Welsh Water and Severn Trent Water; together with the regulator, Natural Resources Wales.