Huron-Perth
Radon testing and mitigation in Goderich, Ontario
Goderich is the Huron County seat, on the Lake Huron bluffs at the mouth of the Maitland River, with an eight-sided town square that anchors a downtown of heritage brick. Here’s what’s known about radon in Goderich, and how to find out about your home.
- Region
- Huron-Perth
- Population
- about 8,000
- Public health
- Huron Perth Public Health
- Local factors
- 5 reasons to test
Is radon a problem in Goderich?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Goderich home. A local health unit report put Huron County at 11% of randomly selected homes above the guideline. Across Ontario, about 1 in 8 homes tested at or above the guideline in the 2024 national survey. Locally, Shield-derived glacial soils, cracking clay soils and rural drilled wells are reasons to test. A 91-day test is the only way to know your home’s level.
Radon in Goderich
Goderich is the Huron County seat, on the Lake Huron bluffs at the mouth of the Maitland River, with an eight-sided town square that anchors a downtown of heritage brick. A local Huron County Health Unit report put the share of randomly selected Huron County homes above Health Canada’s 200 Bq/m³ guideline at 11%. That is a county figure from a limited sample, so it is a reason to test and not a prediction for a Goderich house.
The ground under Goderich
Goderich sits on thick glacial till and clay on the Lake Huron plain, with the Maitland River cutting a deep valley through it. Till carries ground-up Canadian Shield rock, a source of uranium, and clay cracks in dry weather. The bluffs and valley slopes shed water quickly, which changes how soil gas moves around a foundation from one lot to the next.
Goderich’s homes
Heritage brick and stone homes around the Square, much of it rebuilt or repaired after the 2011 tornado, sit beside post-war bungalows and newer homes on the town’s edges. Beyond Goderich, Bayfield’s lakeshore cottages and the farmhouses of Central and South Huron are common, many on private wells.
What the data says
Of randomly selected homes tested in Huron County in 2012 were above the Canadian guideline, as reported from Huron County Health Unit testing.Source: Blackburn News — Many Huron County homes have high radon levels (2019), reporting Huron County Health Unit testing
Of homes tested in neighbouring Perth were at or above 200 Bq/m³ in the Health Canada survey data tabulated by Cancer Care Ontario (2009 to 2013).Source: Cancer Care Ontario — Risk of Residential Radon Exposure Varies Geographically (results by public health unit, Health Canada survey data 2009–2013)
Higher average radon exposure for rural residents than urban residents in a 2024 national study of 42,051 homes, mostly linked to drilled wells.Source: Goodarzi et al., Scientific Reports (2024) — rural communities and drilled-well annuli
Local results
Building a real radon picture for Goderich
Public radon data for Southern Ontario towns is thin. The national surveys tested only a handful of homes per area. So we’re building our own: anonymized long-term results from homes we test, published by area once there are at least 30, so no single home can be identified and small samples can’t mislead.
Goderich: collecting results. Already tested? Check your number and share it anonymously when you book.
Local factors
What can push radon up in Goderich
Not a prediction for any single home, just the reasons a test is worth it here.
Glacial soils with Shield debris
The till and gravel left by glaciers here includes ground-up rock carried south from the Canadian Shield. Uranium travels with it, so radon can form close to your footings even where the bedrock itself is low in uranium.
Clay plains
Dense clay slows soil gas, but it cracks in dry spells. Gas then follows the easiest route: the gravel backfill, weeping tile and utility trenches that lead straight to a basement.
Rural homes on drilled wells
A 2024 national study of over 42,000 homes found rural residents were exposed to about 30% more radon than urban residents, with most of the gap linked to drilled wells. Researchers suspect gas travels up the gap around the well casing.
Century homes
Fieldstone, rubble and early concrete foundations, earth-floor cellars and open sumps give radon many ways in. Older doesn’t mean safer: these homes still need a test.
Cottages and crawlspaces
Lakeshore cottages converted to year-round homes often sit on crawlspaces, piers or patched slabs. Once winterized and heated, they can start pulling in soil gas they never did as summer places.
Where we work
Goderich neighbourhoods and nearby communities
- Goderich
- Bayfield
- Clinton
- Exeter
- Seaforth
- Benmiller
- Auburn
- Blyth
- Wingham
- Hensall
- Zurich
- Central Huron
Nearby: Radon in Stratford · Radon in Sarnia
How it works
From test to fix
- Book
Tell us about your Goderich home. We reply within one business day.
- Test for 91+ days
A certified technician places long-term detectors on your lowest lived-in floor. You get an early reading at 2 weeks.
- Get your result
Lab-verified average, explained against Health Canada’s guideline.
- Fix it if it’s high
A sub-slab system designed for your foundation, at a fixed price, with results guaranteed.
Questions
Radon in Goderich: FAQ
Is radon a problem in Goderich?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Goderich home. A local health unit report put Huron County at 11% of randomly selected homes above the guideline. Across Ontario, about 1 in 8 homes tested at or above the guideline in the 2024 national survey. Locally, Shield-derived glacial soils, cracking clay soils and rural drilled wells are reasons to test. A 91-day test is the only way to know your home’s level.
What do we know about radon in Huron County?
A local health unit report put 11% of randomly selected Huron County homes above Health Canada’s 200 Bq/m³ guideline. A county survey can’t say anything about one house, and rural homes on drilled wells tend to run higher on average. A 91-day test is how you find out your own level.
Do you serve Bayfield, Exeter and Clinton?
Yes. We test and mitigate across Huron County, including Goderich, Bayfield, Clinton, Exeter, Seaforth, Wingham and Blyth.
Do you offer radon testing and mitigation in Goderich?
Yes. We test and mitigate homes throughout Goderich, including Goderich, Bayfield, Clinton, Exeter, Seaforth and nearby. Call (226) 271-4667 or book online.
Radon is fixable. First, know your number.
Serving Goderich, Stratford and Sarnia.