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Radon Mitigation and Testing in St. Albert
St. Albert is counted with Edmonton and its neighbours in the 2024 Cross-Canada Survey of Radon, and about 1 in 6 of the homes tested in that census division sat at or above Health Canada's radon guideline. We fix radon in homes across St. Albert, Morinville and the acreages of Sturgeon County.
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Borrowed the St. Albert library's radon monitor? Call with the number, and one of our radon experts will go over what it means for your house.
On this page: Our Results · Radon Levels · Testing · Building Code · FAQ · Free Quote
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Our Radon Mitigation Work in St. Albert
Just a Few of Our Results From the Area
Our crews work all over St. Albert, from 1970s bungalows in Lacombe Park and Forest Lawn to new homes in Erin Ridge North.
No two St. Albert basements are set up quite the same, so we design every system around the house in front of us. Canada's national standard for radon mitigation, CAN/CGSB-149.12-2024 (section 1), says a system can cut indoor radon by about 90% or more when certified professionals design and install it properly, which makes the people doing the work the deciding factor. We have brought the radon down in every home and commercial building we've taken on, and the results of every system we install are guaranteed.
The unusual houses are the ones our technicians like best. More than 3,000 homes in, we still meet something new once in a while, and when that happens the whole team weighs in, so each St. Albert job draws on what every one of our crews in Alberta and BC has learned.
The Four Homes Below
Before Mitigation
~200 to 800Bq/m³
After
10 to 33Bq/m³
After Our St. Albert Systems (Lab Tests)
About 1 in 2under 30 Bq/m³
From our job records: roughly half of our St. Albert systems that had a lab retest afterwards came in under 30 Bq/m³.
800→10Bq/m³
Newer bungalow, Erin Ridge North, St. Albert
2010s bungalow · builder's radon rough-in · sump pit
A builder's rough-in is only a capped pipe, and in this home the owner's test still read 800 Bq/m³ in the main bedroom. We sealed the sump under an airtight lid and added a fan system, and five winter months of lab testing came back at 10.
214→<15Bq/m³
1990s bungalow, Deer Ridge, St. Albert
1990s bungalow · fully finished basement · sealed sump
Two years of the owner's readings averaged just over the guideline. Old, unused heating ducts ran under the floor, and the radon is now drawn from the sealed sump. Its lab result now reads below 15 Bq/m³.
~200→16Bq/m³
Newer two-storey, Riverside, St. Albert
2020s two-storey · builder's radon rough-in · sump pit
A home only a few years old, where the owner's monitor read about 200, right at the guideline. We put a fan on the builder's pipe, sealed the sump and the gaps where the floor meets the walls, and it dropped to 16.
201→33Bq/m³
1970s bungalow, Lacombe Park, St. Albert
1970s bungalow · no sump · bedroom in the basement
Two months on the owner's monitor averaged 201. With no sump to work from, we put a suction point through the floor, cleaned out and sealed the open space under the furnace, and ran the pipe up through the laundry room.
Readings in Bq/m³. The befores are the owners' own tests and monitors; the afters are lab tests. Home details are kept approximate for privacy. Every photo comes from a St. Albert install, though not always the house on that card.
Got a St. Albert result over 200 Bq/m³, or a number you're unsure about? Give us a call and we'll go through it with you.
Radon Levels in St. Albert
What Local Tests Have Found
St. Albert, Morinville and Sturgeon County are counted in census division 11, the Edmonton region. Across that division, about 1 in 6 tested homes came in at or over Health Canada's radon guideline of 200 Bq/m³, and more than half at or over 100, the reference level suggested by the World Health Organization.
Those regional numbers are Evict Radon's, from its national study, the 2024 Cross-Canada Survey of Radon. For the City of Edmonton by itself there is a smaller set: Take Action on Radon had 163 homes run 91-day winter tests, and nearly a quarter read over 200 (Edmonton community report, July 2024). Fewer homes, a single city and one winter, so don't expect the two to match.
Nobody has published a radon number for St. Albert alone, as far as we know. One St. Albert homeowner raised exactly that in a July 2026 letter to the St. Albert Gazette, after a three-month test in their 1973 house came back at 391 Bq/m³. For your own house, a long-term test is what settles it. For the rest of the province, read Alberta's radon, area by area.
Homes That Tested High
Edmonton and Area, Cross-Canada Survey
1 in 6
Edmonton and Area, Same Survey, 100 or Higher
Over Half
Census division 11 (Edmonton with St. Albert, Morinville, Sturgeon County and its other neighbours), 2024 Cross-Canada Survey of Radon, p.70: 4,397 homes tested, 17.3% at or above 200 Bq/m³, 56.8% at or above 100. Take Action on Radon's City of Edmonton report (July 2024): 163 homes, 91-day winter tests, 24% over 200.
What Your Radon Level Means
From Fresh Air to Canada's Guideline
Radon is measured in becquerels per cubic metre (Bq/m³). Here is where a long-term result sits next to the levels that matter in Canada, drawn to scale up to 300.
radoncare.ca
5 to 30
85
100
108.3
148 US
200
300
About 5 to 30Bq/m³
Fresh outdoor air. Radon from the ground gets diluted in open air, and the level changes from day to day and from region to region.
85Bq/m³
The average Canadian home.
100Bq/m³
The reference level the World Health Organization suggests for countries.
108.3Bq/m³
Average of the homes tested across census division 11, the Edmonton region St. Albert belongs to (2024 survey).
148Bq/m³
The level where the US Environmental Protection Agency says to fix a home. A US number, shown for reference: Canada uses Health Canada's guideline.
200Bq/m³ (5.4 pCi/L)
Health Canada's guideline. Above it, Health Canada recommends lowering your level within a year, and sooner the higher it is.
300Bq/m³
The upper limit the World Health Organization and European rules set for a country's reference level.
200 is not the goal. Health Canada says no level of radon is risk free, and 200 is not a recommended stopping point if your home can reasonably go lower.
Above 300: How High Radon Can Go
Not Drawn to Scale
800Bq/m³
Canada's guideline from 1988 to 2007, before it was lowered to 200.
1,493Bq/m³
Top reading recorded in census division 11, St. Albert's survey region, in the 2024 survey.
32,321Bq/m³
The highest Canadian home tested in the 2024 survey.
All levels are long-term averages, which is how Health Canada compares a home with its guideline. Sources: Health Canada (200) and its 2012 survey report (800 until 2007), the BC Centre for Disease Control (fresh air, which it puts at about 5 to 15; outdoor levels change from day to day and region to region, so we show a wider band), the World Health Organization and the US EPA (148, for reference), EU Directive 2013/59/Euratom (100 and 300, for reference), and the 2024 Cross-Canada Survey of Radon (85, 108.3, 1,493 and 32,321).
Radon Testing in St. Albert
The Best Way to Test
For a number you can rely on, test for the long term. Our long-term test kit follows what Health Canada recommends: it goes in the lowest lived-in level of your home for three months or more, ideally over the winter, and then by mail to the lab in the prepaid envelope. The lab's result is one you can act on, and if it comes back high, we'll go over it with you.
Long-Term Radon Test Kit
Lab analysis and a prepaid return envelope included. Free shipping in Alberta and BC.
$54.99
Order a Test KitIf you'd rather see the numbers day by day, we sell digital monitors too, among them the same model the St. Albert library lends, the Airthings Corentium Home. C-NRPP has put it through its testing, and it is on C-NRPP's page of home radon monitors.
Free Ways to Test in St. Albert
St. Albert Public Library's radon kit. For six weeks at a time, St. Albert Public Library loans out its Radon Screening Kit, an Airthings Corentium Home monitor, to anyone with a St. Albert Public Library card. The kits are kept at the Downtown Library in St. Albert Place, and you place a hold through the library's catalogue. There are only a few and the wait can be long, so check before you count on one:
- How borrowing works, with the six-week loan for radon detector kits
Know a library or community centre that could use a radon detector? RadonCare may be able to donate one for your community to borrow. Contact us to ask.
Got a Reading Already?
Tell us the number and how many days the device ran. A short test can show that a home is high, but it can't show that a home is low, so a low reading from a few days or weeks is worth following with a long-term test. A high one may be enough to go ahead.
A library monitor is a fine first look. The free test to be wary of is one from a company that also sells radon systems: a few days of testing, or a detector in the wrong place, can point to a problem that a proper test wouldn't find. More on what short tests can and cannot show.
Child Care
Alberta law doesn't require radon testing in child care. A 2017 law would have, but it was repealed at the end of 2023 without ever taking effect (Alberta King's Printer). More on radon in child care and schools.
Radon and the Ground Under St. Albert
The gas starts as uranium in the earth, decaying a step at a time, so how much is in the ground under a house is part of the story, and the house itself is the rest (2024 Cross-Canada Survey of Radon, p.28).
St. Albert sits on the bed of Glacial Lake Edmonton, an ancient lake that once covered most of the Edmonton district (Alberta Geological Survey). No study we know of maps radon street by street here, and homes on the same block can test far apart.
For people who don't smoke, radon is the top cause of lung cancer, Health Canada says. You can't see, smell or feel it, so only a test tells you what's in your house. Your doctor or Health Link (811) can answer health questions. More on how radon affects health.
“The greatest average residential radon levels of the six largest Canadian metropolitan areas are observed in the Prairie cities of Edmonton and Calgary.”
St. Albert Homes and What They Mean for Radon
A City of Bungalows and Bi-Levels
Roughly 7 in 10 St. Albert households live in a detached house, where Edmonton sits closer to half, and two-thirds of the city went up from 1961 to 2000 (Statistics Canada, 2021 census). Most St. Albert basements went in long before Alberta added a radon pipe to the code, so there is nothing under the floor waiting for a fan.
Newer Homes With a Builder's Pipe
Every newer St. Albert home we've fixed that had a builder's radon rough-in still needed a fan system to bring the level down, from Erin Ridge North to Riverside. Across Alberta, the 2024 Cross-Canada Survey of Radon found new homes are being built with "record-high radon levels" (p.51-52). So a newer St. Albert house is no exception: test it, and if there is a builder's pipe, we check that it works before we put a fan on it.
Sump Pits
Sump pits are the norm in the St. Albert basements we work in, and more often than not the system pulls from one, so the pit is sealed under an airtight lid (our job records). Older bungalows without a pit have us core a hole through the slab for the suction point instead. An open pit is an easy way in for radon, and Alberta's building code requires sump pit covers to be airtight. The lid also has to stay easy to take off, because the pump needs a check every year. Learn more about sealing a sump pit for radon.
Semis and Townhouses
About 1 in 7 St. Albert homes is a semi-detached or row house (Statistics Canada). Radon can be very different from one side of a shared wall to the other, so a neighbour's result doesn't tell you yours. Both sides should test. More on condos, townhouses and renters.
Morinville and Sturgeon County
The homes change once you leave the city. Morinville grew fastest in the late 2000s, when about 1 in 5 of its homes went up, still years before the radon rough-in. Sturgeon County is acreage country: about 9 in 10 homes are single detached, and about 1 in 9 went up before 1961, the oldest mix of the three (Statistics Canada, 2021 census). Older acreage or new build, the test is the same.
City Water, Country Wells
St. Albert taps are fed from the North Saskatchewan River through EPCOR (City of St. Albert), so wells are a country question here. Out on a Sturgeon County acreage with its own well, put a test near the top of the list. A 2024 University of Calgary study found people in rural communities were exposed to about 30% more radon at home than people in cities, and linked the radon in rural homes to how close they sit to a drilled groundwater well (The Canadian Press, February 2024).
Energy Retrofits
When a net-zero retrofit home in Oakmont opened for the 2026 Eco-Solar Home Tour, radon mitigation was on the list of what visitors would see. Sealing a house tighter changes how air moves through it, so Health Canada recommends testing again the next heating season after new windows, insulation, air sealing or a new furnace. More on radon and energy retrofits.
Where the Radon Fan Is Installed
Canada's radon mitigation standard lets a fan go outdoors only where winters are mild, and a St. Albert winter is nowhere near that (CAN/CGSB-149.12-2024, section 5.8.1.1, p.30; National Building Code of Canada, Appendix C, Table C-2). In the US, radon fans are often mounted outside, but that isn't allowed anywhere as cold as St. Albert, so here the fan is installed in a heated space, usually a basement, a utility room or a heated garage. We use fans designed for radon mitigation, so they're sealed properly and won't leak.
What We Find Under St. Albert Floors
Under the St. Albert floors we've opened, sand is what we find most often, then gravel, and clay or dirt turns up now and then (our job reports). That sand is often very wet: dig about 10 inches down and we often hit standing water. That's good news, because the radon fan can do some of its best drying here, and these basements often end up drier as well as lower in radon. Before we decide where a system goes, we measure the pressure under the floor. Where it's clay or dirt, a house may need a second suction point, and we add one if it does. The background: how a radon system works.
Radon and the Building Code in St. Albert
What New Homes Need, and Since When
More than 8 in 10 homes in St. Albert were built before 2011 (Statistics Canada, 2021 census), well ahead of Alberta's first radon rough-in, so most houses here were built without a radon pipe. If the builder of your house applied after November 1, 2015, it has one: a pipe set through the slab and capped, with no fan on it.
Radon Rough-In Required
New Homes in Alberta, Since
2015
Fan
Not in the Code
Code Dates for St. Albert
- November 1, 2015: If the builder applied after this date, the house has Alberta's radon rough-in, a capped pipe through the basement slab. The Alberta Building Code 2014 brought it in on May 1, 2015, with six more months when builders could still use the older code (Government of Alberta).
- December 1, 2019: Applications from this date fall under the National Building Code (Alberta Edition) 2019, which adds a label on the rough-in pipe (Government of Alberta).
- May 1, 2024: Applications from this date fall under the National Building Code (Alberta Edition) 2023, which keeps the rough-in and still doesn't call for a fan (Government of Alberta).
Buying a newer home? Ask the builder or the seller where the radon pipe is. If the builder applied in December 2019 or later, that pipe must be labelled. Then test once you're living in it.
What It Means for Your Home
A rough-in on its own doesn't lower radon: it is a capped pipe waiting for a fan. A newer St. Albert home needs testing all the same, and when a result is high, the pipe gets checked before anything is built on it. More on radon in the Alberta Building Code.
Who Inspects New Homes in St. Albert
The City of St. Albert does its own building inspections. Its Building Inspection Services branch is staffed by City employees certified as Safety Codes Officers, so new homes inside the city are checked against the Alberta code by the City's own officers. Morinville and Sturgeon County follow the same Alberta code.
Radon in Alberta: The Bigger Picture
Plenty of radon questions have the same answer in St. Albert as anywhere in Alberta: what a number means, how a system works, what sets the price, grants, and buying or selling a home. Those answers are on one page: What your level means · Radon and your health · How mitigation works · What changes the price · Grants and help paying · Alberta code history · Buying or selling · More radon questions
St. Albert Radon Questions
Is Radon a Problem in St. Albert?
Yes. In the 2024 Cross-Canada Survey of Radon, St. Albert shares a census division with Edmonton and the towns around it, where about 1 in 6 homes tested were at or above Health Canada's guideline of 200 Bq/m³. In our own St. Albert work, the highest of the four homes above, 800 Bq/m³ before, was a bungalow under ten years old. Your own house needs its own long-term test.
Are Newer or Older St. Albert Homes Higher in Radon?
Either can be high. No public source breaks St. Albert's radon down by neighbourhood or by age, and we've fixed high homes here from the 1970s through the 2020s. Across Alberta, newer homes in the 2024 survey tested higher on average (p.51-52), so a new build is no reason to skip the test.
Can I Borrow a Radon Detector in St. Albert?
You can: St. Albert Public Library lends a Radon Screening Kit for six weeks; place a hold in the library catalogue. The wait can be long, so for an answer this winter, order our long-term test kit, with free shipping in Alberta. See Radon Testing in St. Albert.
Does My St. Albert Home Have a Radon Pipe?
If it was built before about 2016, probably not. Just 1 in 11 or so St. Albert homes were built from 2016 to 2021 (Statistics Canada), so most homes here are older than Alberta's rough-in. If yours has one, it still needs a test: the pipe comes without a fan, and every newer St. Albert home we've fixed that had one needed a fan added. With a high result, our first step is checking whether that pipe can be used.
Do You Work in Morinville and Sturgeon County?
We do. Besides St. Albert itself, our crews cover Morinville, Gibbons, Bon Accord, Legal and the acreages of Sturgeon County. We're in Edmonton too: see our Edmonton page. If your area isn't on the map below, give us a call.
How Much Does Radon Mitigation Cost in St. Albert?
A radon system costs a fraction of the price of air conditioning. What you pay depends on the house. Most St. Albert homes we fix have a sump pit, and sealing it airtight is part of the work. With a few facts about your basement, we can usually give you a price on that first call. More on what sets the price.
Why Doesn't RadonCare Offer Free Radon Tests?
We'd rather the test be done properly. A real test spends at least three months in the lowest lived-in level of the house, and we recommend a system only when a test shows the house needs one. For a free start, put a hold on the St. Albert library's radon kit, then follow up with a long-term test.
Is There a Grant for Radon Mitigation in St. Albert?
At the time of writing (October 2026), we know of no radon mitigation grant from the City of St. Albert, Morinville, Sturgeon County or the Government of Alberta. If you find one, tell us. Two charities can help: the Canadian Lung Association's Lungs Matter program, if you have been diagnosed with lung cancer, or your household has a low to moderate income, and Alberta Lung, in radon season, if you have been affected by lung cancer. See grants and help paying.
Areas We Serve Around St. Albert
We've fixed homes in Akinsdale, Braeside, Deer Ridge, Erin Ridge, Erin Ridge North, Forest Lawn, Heritage Lakes, Inglewood, Lacombe Park, North Ridge, Oakmont, Pineview, Riverside and Sturgeon Heights, and we cover the rest of St. Albert too, along with Morinville, Gibbons, Bon Accord, Legal, Cardiff, Villeneuve and the acreages of Sturgeon County.
Nearby Areas We Serve
Outside This Map? We Work Across Alberta and the BC Interior.
Our crews also work in Leduc, Red Deer, Airdrie, Cochrane and Calgary, and across the BC Interior. Not sure about your town? Call 1‑844‑723‑6622.
Radon in the Local News
St. Albert Gazette, July 22, 2026Letter: Is Radon an Issue in St. Albert Homes?A St. Albert homeowner on testing a 1973 home and finding a high level.
City of St. Albert, June 13, 2026Eco-Solar Home Tour 2026A public home tour run by the Eco-Solar Home Tour Society of Alberta. A net-zero retrofit home in Oakmont listed radon mitigation among its features.
St. Albert Gazette (The Canadian Press), October 23, 2024'Alarming': Report Says Canadian Homes Show Higher Levels, Exposure to Radon GasCanada-wide coverage of the survey behind this page's Edmonton-area numbers.
Get a Free Quote or Ask a Question
Fill out the form and a radon expert will get in touch to answer your questions. Prefer to talk? Call 1‑844‑723‑6622.
About RadonCare
We've lowered the radon in every building we've ever worked on: more than 3,000 homes across Alberta and British Columbia, plus schools, apartment buildings and government buildings. We started out in heating and ventilation, so our team of C-NRPP certified professionals designs every system from how air actually moves through your house, and we aim for the lowest level your home can reasonably reach, not just under the guideline. From your first test to a system built for your home, the results are guaranteed. RadonCare is a five-time Consumer Choice Award winner, and we're involved in Canada's radon industry, with seats on the CARST board of directors and the C-NRPP advisory board.
Updated October 2026