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Drinking Water
In Ontario, there are certain standards that drinking water must meet in order for it to be safe to drink. A reliable municipal water system benefits the community in many ways. The provincial government, through the Ministry of the Environment, Conservation and Parks, regulates these systems to ensure water safety and quality.
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Boil Water Advisories
September 4, 2025 – Boil water advisory in effect for White Oaks Village and Nanticoke Business Park
Grand Erie Public Health (GEPH) has issued a boil water advisory for the White Oaks Village in Hagersville and Nanticoke Business Park until further notice. Public health has been advised of water samples that indicate the presence of bacteria in the water.
Those in the impacted area are advised to use bottled water or boil tap water for at least one minute before drinking, preparing infant formula and juice, brushing teeth, making ice or using the water to prepare food.
Those impacted will be notified once the advisory has been lifted.
Cisterns
In many rural areas, municipal water service is not available. In such cases, it is necessary for a home owner to use an alternate water supply. Where there is no body of water or well on the property, many homes rely on the use of a cistern. A cistern is a large holding tank of water. It is filled periodically by a water supply company, or by rainfall.
Drinking Water Hauler Inspection Program
Drinking water haulage vehicles supply water to homes in Haldimand and Norfolk that are serviced by wells or cisterns with unreliable water yield or unsafe water quality.
List of Licensed Laboratories
Under the Safe Drinking Water Act, labs must be accredited and licensed to test drinking water.
In Ontario, the Ministry of the Environment, Conservation and Parks:
- licenses laboratories
- inspects laboratories
- ensures that laboratories comply with laws and rules around drinking water testing
A drinking water testing licence authorizes a laboratory to carry out analysis for specific drinking water tests by approved analytical techniques.
Private Well Water
Well water quality can change throughout the year, and after certain events such as heavy rainfall or flooding. It is recommended that well water be tested at least three times a year.
Free well water testing is available to private residences year-round.
Water Testing
Drinking water is tested for the presence of two groups of bacteria, total coliform bacteria and E.Coli bacteria. Your results are the number of bacteria in 100 millilitres of your water sample.
Small Drinking Water Systems
If you provide access to drinking water for the public and your water is not provided by a municipal source, you may be operating a Small Drinking Water System (SDWS). These systems must follow the requirements under the law, Small Drinking Water Systems (O. Reg. 319/08).