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Promoting health through safe drinking and recreational water, including small drinking water systems.

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Review of Guidelines for Shock Chlorination in Private Wells (UBC Bridge Program)

Microbial contamination of groundwater from private wells can pose a significant health risk to rural Canadians. To mitigate risk, Health Canada currently recommends shock chlorination along with microbial well testing, voluntary measures most often performed by the homeowner. However, infrequent testing and paucity of research assessing the effectiveness of shock chlorination guidance as...

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Understanding microbial indicators for drinking water assessment - revised

Boil water advisories are issued when water testing detects higher than accepted amounts of microbial indicators or when there are deficiencies with water treatment. The fear of not issuing a boil water advisory when there is truly a health risk associated with water consumption can lead water operators to call for boil water advisories as a precautionary measure. Yet, issuance of boil water...

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Float Tanks: Review of Current Guidance and Considerations for Public Health Inspectors

The growing popularity of “floatation” and the ways in which this practice differs from the use of pools and spas have raised interesting questions in environmental public health. Public health agencies in the US and Canada have taken very different approaches to the classification and regulation (or non-regulation) of these facilities. Continuing engagement amongst environmental health...

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Float Tanks: Considerations for Environmental Public Health

Floatation refers to a meditative activity in which users float in a high-density Epsom salt solution in a dark, quiet environment. Because float tanks are distinct from swimming pools and other recreational water, questions have been raised regarding the need for and efficacy of various disinfection methods. Although direct evidence is lacking, pathogen kill assays and field studies from...

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Community Water Fluoridation in Canada – Trends, Benefits, and Risks (University of Guelph Master of Public Health Program)

Fluoride has been added to public drinking water in Canadian communities since the 1940s as a means of preventing tooth decay. Dental fluorosis is a known adverse effect of excessive fluoride exposure during tooth formation. Fluorosis ranges from barely noticeable whitish striations in the enamel to severe pitting and brownish staining. In general, the prevalence of dental fluorosis in...

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Pool Chlorination and Closure Guidelines

As an EH director at a local health authority, helping to review provincial guidelines on swimming pools, you want to know if scientific evidence supports pool closure orders when free available chlorine (FAC) is found to be at or above 10 ppm. Should the level be different and are there other factors to be considered for closure, instead of or in addition to FAC? What is Free Available Chlorine...

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Workshops Presentations

Retrospective Investigation of Drinking Water-related Illnesses in Canada

Update on the NCCPH Small Drinking Water Systems Project

Update on the NCCPH Small Drinking Water Systems Project

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