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Evidence Reviews

We produce evidence reviews based on our assessments of needs and gaps in evidence-based environmental health practice and policy. We also work with researchers and environmental public health students for reviews. These documents are peer-reviewed and the content is the responsibility of the authors.

Cyanobacteria and Drinking Water: Occurrence, Risks, Management and Knowledge Gaps for Public Health

With warming temperatures due to climate change and increased nutrient loads to freshwater systems, the occurrence of harmful algal blooms, largely associated with toxin-producing cyanobacteria, is expected to increase across Canada. While cyanoblooms have affected Canadian waterbodies for many years, the potential to negatively impact drinking water supplies is considered an emerging area of...

PDF icon Summary Cyanobacteria and Drinking Water EN.pdf, PDF icon Cyanobacteria and Drinking Water- Occurrence Risks Management and Knowledge Gaps for Public Health EN.pdf

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

Topics: Drinking Water, Water Location: General, Canada

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...

PDF icon Community_Water_Fluoridation_Feb_2014.pdf

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

Topics: Water, Drinking Water Location: General, Canada

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...

PDF icon Shock_Chlorination_Wells_Nov_2013.pdf

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Water-borne Disease Outbreaks in Canadian Small Drinking Water Systems

Topics: Drinking Water, Water Location: General, Canada

Information about Canadian drinking water systems and past water-borne disease outbreaks is incomplete and non-standardized. Standard definitions and coordinated surveillance systems for water-borne disease outbreaks would help inform policy and practice. A relatively high proportion of past water-borne disease outbreaks in Canada are estimated to have occurred in small drinking water systems...

PDF icon SDWS_Water-borne_EN.pdf

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