Niagara Region
Radon testing and mitigation in Niagara Falls, Ontario
Beyond the tourist core, Niagara Falls is a city of established neighbourhoods (Stamford, Drummondville, Chippawa) and a lot of new construction in the south and west ends. Here’s what’s known about radon in Niagara Falls, and how to find out about your home.
- Region
- Niagara Region
- Population
- about 94,000
- Public health
- Niagara Region Public Health
- Local factors
- 4 reasons to test
Is radon a problem in Niagara Falls?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Niagara Falls 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, shallow or fractured bedrock, cracking clay 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 Niagara Falls
Beyond the tourist core, Niagara Falls is a city of established neighbourhoods (Stamford, Drummondville, Chippawa) and a lot of new construction in the south and west ends. Many families live in homes with finished basements used every day.
The ground under Niagara Falls
The city sits on the dolostone cap rock that forms the Falls and the Niagara Gorge. Soils over the rock are often thin, and the rock is jointed and fractured. Further south toward Chippawa and the Welland River, glacial lake clays cover the bedrock.
Niagara Falls’s homes
Older homes in Drummondville and Chippawa often have block or stone foundations with sumps and floor drains. Post-war neighbourhoods have finished basements. New subdivisions in the south end have large, airtight homes. All need a long-term test.
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)
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)
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 Niagara Falls
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.
Niagara Falls: collecting results. Already tested? Check your number and share it anonymously when you book.
Local factors
What can push radon up in Niagara Falls
Not a prediction for any single home, just the reasons a test is worth it here.
Shallow or fractured bedrock
Where rock sits close to the surface, as on the Niagara Escarpment or the limestone plains near Lake Erie, joints and fractures can act as pipelines that carry soil gas toward foundations.
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.
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.
Lived-in basements
Radon is usually highest on the lowest floor. Basement bedrooms, home offices and rental suites mean people spend hours a day where exposure is greatest.
Where we work
Niagara Falls neighbourhoods and nearby communities
- Stamford
- Drummondville
- Chippawa
- Lundy’s Lane
- Mount Carmel
- Garner
- Willoughby
- Downtown & Queen Street
Nearby: Radon in NOTL · Radon in Thorold · Radon in Welland · Radon in Fort Erie
How it works
From test to fix
- Book
Tell us about your Niagara Falls 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 Niagara Falls: FAQ
Is radon a problem in Niagara Falls?
Radon can exceed Health Canada’s 200 Bq/m³ guideline in any Niagara Falls 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, shallow or fractured bedrock, cracking clay soils and new airtight construction are reasons to test. A 91-day test is the only way to know your home’s level.
Is radon common in Niagara Falls homes?
There’s no published neighbourhood data for Niagara Falls. What we know is that about 1 in 8 Ontario homes tested at or above the guideline in the 2024 national survey, and that fractured bedrock and clay soils can each give soil gas a way in. Test to find out.
Do you test rental properties and short-term rentals?
Yes. For rentals we place detectors in the lowest lived-in unit and provide a written report you can share with tenants or include in your property records.
Do you offer radon testing and mitigation in Niagara Falls?
Yes. We test and mitigate homes throughout Niagara Falls, including Stamford, Drummondville, Chippawa, Lundy’s Lane, Mount Carmel and nearby. Call (226) 271-4667 or book online.
Radon is fixable. First, know your number.
Serving Niagara Falls, NOTL, Thorold, Welland and Fort Erie.