Oxford County
Radon testing and mitigation in Woodstock, Ontario
Woodstock’s growth has been steady for two decades, with new neighbourhoods like Sally Creek and the north and east ends built around a 19th-century core of brick homes. Here’s what’s known about radon in Woodstock, and how to find out about your home.
- Region
- Oxford County
- Population
- about 47,000
- Public health
- Southwestern Public Health
- Local factors
- 4 reasons to test
Is radon a problem in Woodstock?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Woodstock home. No published local data rules any neighbourhood in or out. Across Ontario, about 1 in 8 homes tested at or above the guideline in the 2024 national survey. Locally, Shield-derived glacial soils, sandy or gravelly soils and new airtight construction are reasons to test. A 91-day test is the only way to know your home’s level.
Radon in Woodstock
Woodstock’s growth has been steady for two decades, with new neighbourhoods like Sally Creek and the north and east ends built around a 19th-century core of brick homes. Many of those newer homes predate Ontario’s radon rough-in requirement.
The ground under Woodstock
Woodstock sits on till plain where the Thames valley and Cedar Creek cut through it, with sand and gravel along the valleys. Like most of Oxford County, the glacial soils carry rock from the Canadian Shield, a natural source of uranium and the radon it decays into.
Woodstock’s homes
Heritage homes downtown often have stone foundations and older sumps. Newer homes are tighter and taller, with finished basements used as family rooms and bedrooms. Both get the same first step: a 91-day test on the lowest floor you use.
What the data says
Ontario homes at or above Health Canada’s 200 Bq/m³ guideline in the 2024 Cross-Canada Survey, more than double the share found a decade earlier.Source: Cross-Canada Survey of Radon Exposure in the Residential Buildings of Urban and Rural Communities (2024)
Free loan period for digital radon monitors through Oxford County Library. Useful for a first look, not a substitute for a 91-day test.Source: Oxford Today — Oxford County Library offers radon monitors for loan
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 Woodstock
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.
Woodstock: collecting results. Already tested? Check your number and share it anonymously when you book.
Local factors
What can push radon up in Woodstock
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.
Sandy or gravelly soils
Sand and gravel let soil gas move freely and over longer distances. More of the radon formed in the ground can reach the air around your foundation instead of decaying in place.
New, airtight construction
Canadian research shows newer homes have tended to test higher than older ones. Bigger, taller and tighter homes create a stronger stack effect that draws soil gas in through the slab.
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.
Where we work
Woodstock neighbourhoods and nearby communities
- Downtown & heritage core
- Sally Creek
- North-end subdivisions
- Southside
- East Woodstock
- Beachville
- Innerkip
- Embro
- Hickson
- Eastwood
Nearby: Radon in Ingersoll · Radon in Tillsonburg · Radon in Paris · Radon in Stratford · Radon in Kitchener
How it works
From test to fix
- Book
Tell us about your Woodstock 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 Woodstock: FAQ
Is radon a problem in Woodstock?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Woodstock home. No published local data rules any neighbourhood in or out. Across Ontario, about 1 in 8 homes tested at or above the guideline in the 2024 national survey. Locally, Shield-derived glacial soils, sandy or gravelly soils and new airtight construction are reasons to test. A 91-day test is the only way to know your home’s level.
Where can I borrow a radon detector in Woodstock?
Oxford County Library lends digital radon monitors free for up to six weeks with a library card. It’s a helpful first look. For a decision about mitigation, Health Canada recommends a test of at least three months.
How long does a radon mitigation install take?
Most single-family installs in Woodstock take one day. A follow-up long-term test after installation confirms the system brought your level down.
Do you offer radon testing and mitigation in Woodstock?
Yes. We test and mitigate homes throughout Woodstock, including Downtown & heritage core, Sally Creek, North-end subdivisions, Southside, East Woodstock and nearby. Call (226) 271-4667 or book online.
Radon is fixable. First, know your number.
Serving Woodstock, Ingersoll, Tillsonburg, Paris, Stratford and Kitchener.