Contaminants and Hazards


Identifying hazards posed by infectious diseases, chemicals, radiation, and noise, in homes and personal service establishments.

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Carbon Dioxide in Indoor Air

A Public Health Inspector calls about an issue flagged at an older elementary school.  As part of a teacher complaint process, the provincial health and safety agency has been conducting a workplace…
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Cellular/Mobile Phone Use and Intracranial Tumours

Cell phone use is increasingly prevalent in Canada. Public concerns of a potential associated risk with intracranial tumours have been raised. Further, recent media attention has focused on disparate…
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Cemetery Setback Distances to Prevent Surface Water Contamination

Primary inquiry: In Canada, as in many other countries, cemeteries are required to be setback a certain distance from waterbodies to protect drinking water sources from contaminated liquids that can…
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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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Church/Community Suppers: What is the Evidence for Risk of Food-borne Illness?

We estimate that 3% to 16% of food-borne outbreaks investigated by public health agencies are associated with community events including church suppers, fairs, potlucks, picnics, etc. However, there…
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CIPHI Ontario Seminar Series - Student Edition

This CIPHI Seminar Series will feature three student abstracts.Microbial Levels of Kibbeh NayyehPresenter: Mahmoud KanaanKibbeh Nayyeh is a raw beef ready-to-eat dish typically found in the Middle…
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CIPHI Seminar Series - Rabies Is Real… An Innovative Approach to Rabies Awareness

On December 4, 2015, Hamilton Public Health Services received a report from the Canadian Food Inspection Agency (CFIA) of raccoon strain rabies in a raccoon that attacked two dogs. This rabid raccoon…
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Clandestine Amphetamine-Derived Drug Laboratories: Remediation Guidelines for Residential Settings - revised

Clandestine labs produce illegal substances using a variety of chemicals and manufacturing processes. Clandestine labs can be housed in a variety of structures, including residential and non-…
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Cleaning, disinfection, and sterilization at PSEs - revised*

Health concerns regarding the transmission of infections at personal service establishments (PSEs) are often mitigated by public health inspectors (environmental health officers). Inspection of PSEs…
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Cleaning, Disinfection, and Sterilization at Personal Service Establishments

Cleanup Instructions for Small Mercury Spills - revised

Exposure to the small amount of mercury found in common household devices, such as fever thermometers, thermostats, or fluorescent light bulbs, is not likely to cause serious health problems. Humans …
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Communicating the Risk of Infectious Diseases in a Changing Climate

A changing climate brings the threat of emerging, new infectious diseases and the resurgence of old infectious outbreaks. To ensure that public health professionals and policy makers receive timely…
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Community Impacts of Fuel Spills: a Case Study from BC’s Northern Coast

The BCCDC/NCCEH Environmental Health Seminar Series provides an opportunity for learning and knowledge exchange on a variety of environmental health topics. The seminars can be attended in-person or…
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Comparison of the prevalence of bacterial enteropathogens, potentially zoonotic bacteria and bacterial resistance to antimicrobials in organic and conventional poultry, swine and beef production

The prevalences of zoonotic and potentially zoonotic bacteria or bacteria resistant to antimicrobials in organic and conventional poultry, swine and beef production were compared using systematic…
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Contaminants in black market cannabis: consumers need answers

Legalization of cannabis in 2018 was intended, among other things, to cut off funding to organized crime by removing revenue streams from the sale of illicit cannabis. Public health broadly supported…
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Cooling Tower Registries and Building Water Management Plans: Strategies to combat Legionnaires’ Disease

There’s something in the aerosols Devices that aerosolize water can increase the risk of exposure to Legionella bacteria through inhalation, leading to serious illness such as Legionnaires’ disease…
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COVID-19 and outdoor safety: Considerations for use of outdoor recreational spaces

[NOTE:a printer friendly version of this document is attached at the bottom] Introduction Outdoor recreational spaces make important contributions to social well-being as well as physical and…
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COVID-19 and use of disinfectants and sanitizers in food premises

This blog is based on the NCCEH guidance document Disinfectants and Sanitizers for Use on Food Contact Surfaces to reflect recent developments due to COVID-19. SARS-CoV-2 is the coronavirus…
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COVID-19 and Wildfire Smoke: A Potentially Bad Combination

Exposure to air pollution can irritate the lungs, cause inflammation, and alter immune function, making it more difficult to fight respiratory infections such as COVID-19. Wildfire smoke is a complex…
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COVID-19 Precautions for Multi-unit Residential Buildings

The transmission of COVID-19, which occurs primarily through close contact with an infected person, has made it necessary for large proportions of the world’s population to self-isolate in their…
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