During the extended “new normal” of the COVID-19 pandemic, it may be necessary to periodically close public buildings and facilities, followed by re-opening when safe again…
Topic Pages

Topic Pages introduce an aspect of the environment and its relation to public health by featuring a curated shortlist of NCCEH and external resources. The most relevant resources related to a topic have been selected to best guide the search for further information. These lists are not intended to be exhaustive, and the omission of any individual resource does not preclude it from having value.
The provision of safe drinking water across Canada is a responsibility shared across many agencies. At the federal level, Health Canada sets…
Mould is a ubiquitous fungus in outdoor environments that inevitably makes its way indoors. The general population is commonly exposed to mould through inhalation, and less commonly through direct…
Legionella is an opportunistic premise plumbing pathogen (OPPP) that can cause illnesses including Pontiac fever and Legionnaires’ disease, a severe pneumonia named after an outbreak that…
A health impact assessment (HIA) is a combination of procedures, methods, and tools that allow for the strategic evaluation and assessment of the potential effects on health related to a policy,…
Recreational water venues such as oceans, lakes, and rivers, attract large numbers of users. Usage is higher in the summer months, although recreational water activities such as swimming, water…
Public swimming pools, hot tubs, splash parks, wading pools, and other treated recreational water facilities are popular recreational water venues, which are regulated at the provincial or…
Lead is a potent neurotoxin that is commonly present in our environment and can have serious, irreversible cognitive and behavioral impacts, particularly in children. Historically, most lead…
Cyanobacteria, commonly known as blue-green algae, are naturally occurring microscopic organisms found in fresh, brackish, or marine water that can release cyanotoxins into freshwater systems.…
Norovirus is a group of highly contagious viruses that cause short-term gastroenteritis symptoms including nausea, vomiting, diarrhoea, and potentially chills and fever. Norovirus infection can…
Floatation or float tanks have resurged in popularity since their initial commercialization in the 1970s. These tanks, pods, or chambers are intended to help users achieve certain physical and…
Bed bugs (Cimex lectularius) are small, elusive, and resilient insects that live by feeding on the blood of mammals, including humans. Bed bug infestations have become prominent worldwide…
Hydraulic fracturing (also termed “fracking”) is the process used, along with horizontal drilling, to extract unconventional natural gas (shale gas, tight gas or coalbed methane) and tight oil…