By Canadian Radon Data Team · Sourced from official open data
Direct municipal dataRadon Levels in Fort St. John
In Fort St. John, average indoor radon is 83 Bq/m³ (below the British Columbia average of 168 Bq/m³). 3% of tested homes exceed Health Canada's 200 Bq/m³ reference level. Local geology (Granite) contributes to regional variation.
Geology note
Fort St. John sits on Granite bedrock or surficial deposits. Radon enters homes through cracks in foundations, sump pits, and utility penetrations. Geology explains regional averages, but individual home levels depend on construction, ventilation, and soil contact.
Fort St. John vs British Columbia
Test to confirm your level
Regional averages are moderate, but radon varies house to house. Health Canada recommends all Canadians test their homes.
- 1Use a long-term test kit during heating season (October–April)
- 2Place the detector away from drafts, windows, and exterior walls
- 3If results are below 200 Bq/m³, retest every 2 years
- 4If results exceed 200 Bq/m³, consult a C-NRPP certified mitigator
Order a long-term radon test kit
Health Canada recommends a minimum 3-month test during heating season. Long-term kits give a more accurate picture than short 2-day charcoal tests.
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