Lambton Area Water Supply System

General Information

Testing Treated Inspected
Owner Name: Lambton Area Water Supply (Joint Management Board)
Operating Authority: Ontario Clean Water Agency (Lambton West Hub)
Drinking Water Category: Large Municipal Residential System
Population Served: 101097
Design Capacity: 2105 (l/s)


  • St. Clair River
Feeds To:

  • Chatham-Kent Drinking Water System - Wallaceburg
  • Sarnia Distribution System
  • West Lambton Shores Distribution System
  • Village Of Point Edward Distribution System
  • Alvinston Distribution System
  • Plympton-Wyoming Distribution System
  • St. Clair Distribution System
  • Township Of Warwick Distribution System
Drinking Water System's Municipality Contact Information:

Drinking Water Quality


April 1, 2011 - March 31, 2012

The number shown in this box represents a percentage of all the drinking water quality test results done during the time period indicated that met the Ontario Drinking Water Quality Standards. Includes test results of health-related standard parameters only; operational testing data (ie, chlorine and turbidity) are not included in final water quality results.



April 1, 2011 - March 31, 2012

The Ministry of the Environment has a comprehensive inspection program to ensure that municipal residential drinking water systems operate in compliance with regulatory requirements.

Every municipal residential drinking water system is inspected at least once a year, with one in three inspections unannounced.

The ministry's annual inspection ratings are designed to encourage drinking water systems to strive for continuous improvement and ultimately to meet the ministry's long-term goal of 100 per cent compliance by all systems.


Treatment processes reduce or eliminate the potential for the presence of pathogens (organisms that can cause illness) in drinking water and are used to ensure your drinking water meets provincial standards. Different water sources necessitate different levels and methods of treatment to ensure safe, clean water is provided.

Treatment Listing
Treatment Description
Chlorination The addition of chlorine to raw or filtered water for disinfection purposes or for the purpose of maintaining a consistent level of chlorine in a drinking-water distribution system.
Coagulation A chemical process that causes smaller particles to bind together and form larger particles. The process is used to improve the removal of particles through sedimentation and filtration in the drinking-water treatment process.
Filtration The separation of suspended solid particles from a fluid stream by passing it through a granular or membrane filter that retains all or most of the solids on or within itself.
Flocculation The gathering together of fine particles in water by gentle mixing after the addition of coagulant chemicals to form larger particles that can then be removed by sedimentation and filtration.
Fluoridation The addition of fluoride to drinking water for the purpose of reducing tooth decay. There is generally little or no naturally occurring fluoride in water taken from surface water sources.
Taste and Odour Control A series of treatment procedures used to control the taste and odour of water, including chemically assisted filtration, aeration, chlorination, superchlorination, ozonation and activated carbon treatment. Algae, algae by-products, other complex organic compounds, hydrogen sulphide or iron can all affect water taste and odour.
Zebra Mussel Control Methods used to reduce or prevent the impact of zebra mussels on drinking-water systems. A zebra mussel infestation can block or reduce an intake pipeline's capacity to draw water.

Municipal Drinking Water Quality Reports

The following provides a link to your municipality's most recent annual report showing detailed information on the results of this drinking water system.

Only municipalities with more than 10,000 people are required to make the annual report available on its website. If no web link is provided below, you can contact your municipality using the contact information provided on this page to request a copy of the annual report. Municipalities are required by regulation to make copies of the annual report available to the public without charge.

A link has also been provided to other drinking water reports prepared by the municipality, if these have been made available through their website.

Source Protection

Region: Thames, Sydenham & Region
Lead Source Protection Authority: Upper Thames River CA
Partner Source Protection Authorities: Lower Thames Valley CA, St. Clair Region CA