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Radon Standards in Quebec: Which Thresholds Actually Apply
200 Bq/m³ as an annual average is Health Canada's guideline and applies across Quebec, but it is not a provincial law. Neither the LSST nor the RSST sets a maximum. From 30 January 2027 a binding 200 Bq/m³ limit applies to federally regulated workplaces in Quebec. Read more...
Flat-vector illustration of a Canadian school building and an office building, each with a radon detector visible inside, on a cream background
Radon in Your Child's School: A Guide for Parents
How to ask whether a school has been tested for radon, which provinces have already tested all theirs, and what the numbers mean. Read more...
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Radon: A Toolkit for Union Representatives
What to ask, the mechanisms behind the question, and how to tell a real test from a token one. Free to reproduce. Read more...
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Our Staff Asked About Radon — What Now?
Someone has asked whether your building has been tested for radon. What you are obliged to do, and what a good answer looks like. Read more...
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The Radon Business Case
How to get radon testing approved internally - the obligation, the evidence, the cost drivers, and what deferring actually costs. Read more...
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Work From Home? Who Pays to Test for Radon
If you work from home, your radon exposure rose when your commute went away. Whether your employer should pay, and what to do if not. Read more...
Flat illustration of a small puck-shaped radon detector on a floor in an empty room.
Radon Testing as an Employee Benefit
Research puts office workers among Canada's most radon-exposed. How employer-funded home radon testing works, and what it does not replace. Read more...
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The Most Radon-Exposed Workers in Canada Aren't Miners
Peer-reviewed research puts 603,000 Canadian workers above the WHO radon reference level. The most exposed are receptionists and teachers. Read more...
Flat-vector illustration of a Canadian school building and an office building, each with a radon detector visible inside, on a cream background
Radon in Workplaces, Schools & Daycares in Canada
Required in BC's Interior Health region; announced as a phased-in licensing requirement in Yukon. Voluntary but recommended everywhere else. Band-operated schools and childcare are federally regulated and will be covered... Read more...
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Radon and the Federal Workplace Limit: What Band Councils Need to Know
Band councils are federally regulated employers. From January 30, 2027, the employer must ensure no employee is exposed to an annual average above 200 Bq/m³. The measurement window runs October... Read more...
Flat illustration of a small puck-shaped radon detector on a floor in an empty room.
Commercial Radon Testing in Canada: Process, Detector Counts and Cost
Commercial radon testing uses long-term detectors (minimum three months, during the heating season) in every occupied ground-contact room, one per 200 m² in larger rooms, plus roughly 10% duplicates for... Read more...
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What a Compliant Workplace Radon Record Contains
A compliant radon file is five things, not one: the hazardous substance record; the qualified person's signed written report; the employer's written control procedure, kept current and available to employees;... Read more...
Flat-vector illustration of a new house beside a warranty certificate — GCR new-home warranty and radon in Quebec
Does the GCR Warranty Cover Radon in a New Home in Quebec?
Short answer: No. The mandatory warranty plan administered by the Garantie de construction résidentielle (GCR) does not mention radon anywhere and does not cover it as a named defect. The... Read more...