Lake Huron and Elgin Water Supply Systems

The Lake Huron and Elgin Water Supply Systems are separate systems that are conjoined to service a number of municipalities in Southwestern Ontario. The system operator is the Ontario Clean Water Agency (OCWA)(reference).

The Lake Huron Primary Water Supply System

This 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 ML/d (75 Million Imperial gallons per day) and serves a population of approximately 350,000 people. Its design capacity is 454 ML/d.

The area serviced by this system is shown in Figure 1.

Figure 1. The Lake Huron Primary Water Supply System distribution system.

Lake Huron WS

Source: Lake Huron and Elgin Water Supply Systems.

The Elgin Area Primary Water Supply System

This system services the municipalities of St. Thomas, London, Aylmer, Bayham, Central Elgin, Malahide and Southwold 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 ML/d (20 million Imperial gallons per day) and serves a population of approximately 112,000 people.

The area serviced by this system is shown in Figure 2.

Figure 2. The Elgin Area Primary Water Supply System distribution system.

Elgin Area WS

Source: Lake Huron and Elgin Water Supply Systems.

System Operation

Some of the details of the system operations may be found at Operation and Maintenance of the Primary Water Supply Systems and Water Treatment and Distribution in London.

Water Treatment and Quality

The Water Quality report identifies the addition of fluoride to the water. It states that chloramines (chlorine plus ammonia) are not used by the System or the City of London.

Water quality reports are found on the Reports page. The latest reports and a report archive are:

 

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