Sponsored
Order a long-term radon test kit
Average indoor radon in Fredericton is 154.2 Bq/m³, and 19.8% of tested homes exceed the 200 Bq/m³ guideline. A three-month alpha-track test on the lowest occupied level is the right first step.
Radon levels in Fredericton
New Brunswick · Region 3 metropolitan area · Health Canada home survey · 2011 data · 96 readings
By OpenStats · Built from official Canadian sources
Regional estimate154.2Bq/m³Guideline watch
0600+Guideline200 Bq/m³
Mean indoor radon
154.2 Bq/m³
New Brunswick avg: 158 Bq/m³
Homes above 200 Bq/m³
19.8%
Provincial avg: 21%
Risk category
Moderate
Reference: 200 Bq/m³
Reading this page
In Fredericton, average indoor radon is 154.2 Bq/m³ (below the New Brunswick average of 158 Bq/m³). 19.8% of tested homes exceed Health Canada's 200 Bq/m³ reference level.
Local geology (Mixed) contributes to regional variation. Geology helps explain area averages; individual home levels still depend on foundation type, ventilation, and soil contact.
How to read this
Figures come from Health Canada's Cross-Canada Survey of Radon Concentrations in Homes: long-term tests in participating dwellings, aggregated by geography. The 200 Bq/m³ guideline applies to the normal occupancy area (lowest lived-in level). A city mean is not a reading for your address.
Start with the mean and the share of homes at or above 200 Bq/m³, then check whether this page is labeled direct or regional. Direct means the survey geography matches this municipality or its named metro breakout. Regional means you are seeing a broader area average that may not match your street. Compare with the provincial reading only as context; house-to-house variation is usually larger than city-to-city gaps.
Prefer a three-month (or longer) alpha-track test that includes heating season. Short-term tests are screening tools. Place the detector on the lowest lived-in level, away from exterior walls and high airflow. For elevated results, hire a C-NRPP measurement or mitigation professional, then retest after any work. Full provenance: methodology.
Figure 1 · Geology
Mixed beneath Fredericton
Fredericton sits on Mixed 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 radon154.2 Bq/m³
New Brunswick provincial average158 Bq/m³
Health Canada reference level200 Bq/m³
Homes above 200 Bq/m³19.8%
Testing strongly advised
19.8% of tested homes in this area exceed 200 Bq/m³. Individual homes vary — the only way to know your level is to test.
- 1Order a Health Canada approved long-term test kit
- 2Place the detector on the lowest occupied level for 3+ months
- 3Send the kit to the lab and compare results to 200 Bq/m³
- 4Retest every 2 years or after major renovations
SponsoredAlso consider
Airthings digital radon monitor
Popular continuous readout
SponsoredAlso consider
Short-term screening kit
Real estate closings only
As an Amazon Associate, OpenStats earns from qualifying purchases.
Source · Health Canada Cross-Canada Survey of Radon Concentrations in Homes, health region 2007 vintage 2009–2011 (Open Government Licence – Canada); Region 3 health region survey (96 home readings). Last updated 2011. Refreshed on the site's automated schedule.