Evidence Reviews

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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…
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Understanding the Public Health Implications Concerning Shale Gas Production and Hydraulic Fracturing

The intent of this document is to synthesize scientific information related to public health concerns of relevance to Canada about shale gas production (including the pre-production stages of…

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Summary: Animals as Sentinels for Public Health Risks from Oil and Gas Development

This document was based on a contracted review: …

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

Review of Guidelines for Shock Chlorination in Private Wells

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…

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Characteristics of small residential and commercial water systems that influence their likelihood of being on drinking water advisories in rural British Columbia, Canada

Health officials often lack information about characteristics that predict which water systems are most likely to be placed on and to persist on drinking water advisories (e.g. health warnings…

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Water-borne Disease Outbreaks in Canadian Small Drinking Water Systems

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-…

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Nanotechnology: A Review of Exposure, Health Risks and Recent Regulatory Developments

Nanotechnology is the creation of materials, devices, and systems by controlling matter at the nanometer scale (1-100 billionths of a meter). Potential exposures to engineered nanoparticles (ENPs…

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Are Naturally Ventilated LEED Buildings Healthier?

Green building rating systems such as Leadership in Energy and Environmental Design (LEED) employ a variety of design solutions to reduce energy and minimize environmental damage. These solutions…

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Current Evidence on the Effectiveness of Interventions During Heat Episodes

Topics: Climate Change

This summary provides current evidence on the effect iveness of a variety of described heat interventions by highlighting the strengths and weaknesses of each. The authors argue that in the…

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How efficacious and how practical are personal health protection measures recommended to reduce morbidity and mortality during heat episodes?

Topics: Climate Change

The potential impact of elevated temperatures on mortality and morbidity is severe. Every year, hospitalizations and deaths occur in numbers well above average during and just after days of…

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Retrospective Surveillance for Drinking Water-Related Illnesses in Canada

Waterborne infections are an important cause of preventable enteric disease. This report obtained information on: characteristics of waterborne disease events (WBEs) in Canada; factors…

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What is the Evidence on Applicability and Effectiveness of Public Health Interventions in Reducing Morbidity and Mortality during Heat Episodes?

Topics: Climate Change

Heat events are associated with a diverse range of adverse health effects including excess mortality as well as many symptoms falling under the broad umbrella of “heat-related illness”. Although…

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Chlorination Disinfection By-Products in Drinking Water

The challenge of judging and managing public health risks “caused by” chlorination disinfection by-products (DBPs) in drinking water is likely the most complex issue faced by the drinking water…

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When can Point-of-Use Water Filters be used for Removal of Protozoa?

While boiling water is an effective way to kill most microbial pathogens, research performed in the United Kingdom has shown that people do not necessarily comply with boil water advisories.…

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