Areas We Serve
Approximately 5,000 square kilometres of the greater London area of SouthWestern Ontario is supplied by two Water Treatment Systems:
Lake Huron Primary Water Supply System
The Lake Huron Primary Water Supply System services the municipalities of London, Lambton Shores, North Middlesex, South Huron, Bluewater, Middlesex Centre, Lucan-Biddulph and Strathroy-Caradoc from a water treatment plant located north of the village of Grand Bend in South Huron. The plant has a current treatment capacity of 340 million litres per day (75 Million Imperial gallons per day) and serves a population of approximately 375,000 people.
Elgin Area Primary Water Supply System
The Elgin Area Primary Water Supply System services the municipalities of St. Thomas, London, Aylmer, Bayham, Central Elgin, Malahide, Southwold and Dutton Dunwich from a water treatment plant located east of the village of Port Stanley in Central Elgin. The plant has a current treatment capacity of 91 million litres per day (20 million Imperial gallons per day) and serves a population of approximately 130,000 people.
The Lake Huron and Elgin Area water systems each have an Environmental Management System registered to the ISO 14001 international standard. Under the Safe Drinking Water Act, the Ontario Ministry of the Environment, Conservation and Parks (MECP) requires that each drinking water system have an accredited operating authority. In order to be accredited, the operating authority and the drinking water system must establish and maintain a Quality Management System.
Each of the municipalities supplied by these systems are responsible for water distribution to their residential, commercial and industrial customers. For more information about the water quality in your area, please contact your local municipal office.
If you require additional information on the Water Quality Reports published on this website, or require further information on this website and the Area Water Supply Systems, please contact us.