Canada Radon
Atlas of Radon Levels

Radon Levels in Fredericton

New Brunswick · Cross-Canada Radon Survey · 2025 data

By Canadian Radon Data Team · Sourced from official open data

Direct municipal data
30Bq/m³Low
0600+Guideline200 Bq/m³
Mean indoor radon
30 Bq/m³
New Brunswick avg: 138 Bq/m³
Homes above 200 Bq/m³
6%
Provincial avg: 22%
Risk category
Low
Reference: 200 Bq/m³

Community summary

Average radon in Fredericton is 30 Bq/m³; 6% of homes exceed 200 Bq/m³.

Figure 1 · Geology

Sedimentary beneath Fredericton

Fredericton sits on Sedimentary 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.

Fredericton vs New Brunswick

Fredericton mean radon30 Bq/m³
New Brunswick provincial average138 Bq/m³
Health Canada reference level200 Bq/m³
Homes above 200 Bq/m³6%

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

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Source · Health Canada Cross-Canada Radon Survey (seed). Last updated 2025. Refreshed on the site's automated schedule.