Norfolk & Haldimand
Radon testing and mitigation in Port Dover, Ontario
Port Dover is a Lake Erie harbour town that has gone from summer destination to year-round home for many families and retirees. Here’s what’s known about radon in Port Dover, and how to find out about your home.
- Region
- Norfolk & Haldimand
- Population
- part of Norfolk County
- Public health
- Grand Erie Public Health
- Local factors
- 4 reasons to test
Is radon a problem in Port Dover?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Port Dover 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, converted cottages and crawlspaces, sandy or gravelly 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 Port Dover
Port Dover is a Lake Erie harbour town that has gone from summer destination to year-round home for many families and retirees. Lakeside cottages, older village homes and new builds on the edge of town all sit within a few minutes of each other.
The ground under Port Dover
The town lies at the mouth of the Lynn River on the Norfolk Sand Plain, with sandy ground near the lake and river and glacial lake deposits on the higher land. Permeable soils let soil gas move readily toward foundations.
Port Dover’s homes
Cottages converted to year-round use often sit on crawlspaces or older slabs, and heating them through winter can change how much soil gas they draw in. New homes on the town’s edges are tighter and need testing too. In Port Ryerse, Turkey Point and Nanticoke, many homes rely on wells.
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)
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
Roughly how many homes per health region the first national survey (2009–2011) could test. Too few to clear any neighbourhood, which is why public maps can’t tell you about your house.Source: Health Canada — Cross-Canada Survey of Radon Concentrations in Homes, Final Report (2012)
Local results
Building a real radon picture for Port Dover
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.
Port Dover: collecting results. Already tested? Check your number and share it anonymously when you book.
Local factors
What can push radon up in Port Dover
Not a prediction for any single home, just the reasons a test is worth it here.
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.
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.
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.
Where we work
Port Dover neighbourhoods and nearby communities
- Port Dover
- Port Ryerse
- Vittoria
- Turkey Point
- Nanticoke
- Walsh
Nearby: Radon in Simcoe · Radon in Caledonia
How it works
From test to fix
- Book
Tell us about your Port Dover 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 Port Dover: FAQ
Is radon a problem in Port Dover?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Port Dover 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, converted cottages and crawlspaces, sandy or gravelly soils and rural drilled wells are reasons to test. A 91-day test is the only way to know your home’s level.
When is the best time to test a Port Dover home?
Between October and April. Closed windows and heating create the stack effect that draws soil gas indoors, so a winter test gives the most realistic picture of your yearly average.
Can you fix radon in a cottage without tearing up floors?
Usually. For crawlspaces we seal a membrane over the soil and depressurize beneath it. For slabs, a single four- or five-inch core is typically all the opening we need.
Do you offer radon testing and mitigation in Port Dover?
Yes. We test and mitigate homes throughout Port Dover, including Port Dover, Port Ryerse, Vittoria, Turkey Point, Nanticoke and nearby. Call (226) 271-4667 or book online.
Radon is fixable. First, know your number.
Serving Port Dover, Simcoe and Caledonia.