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Radon levels and distance to a certified mitigator

How many Canadians live more than 100 km from a C-NRPP certified radon mitigator, by province, with the survey’s radon levels beside it. Share, embed or download it.

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3.1 million Canadians live more than 100 km from a certified radon mitigator
This is what the embed code shows, and what people see when they share this page. It updates when the data changes. A square copy for social media is in the downloads below.Canadian Radon Services Index (canadianradonservicesindex.ca), from the 2024 Cross-Canada Survey of Radon and the C-NRPP registry.
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Canadian Radon Services Index (canadianradonservicesindex.ca), from the 2024 Cross-Canada Survey of Radon and the C-NRPP registry.

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This graphic shows how many Canadians live more than 100 km from a certified radon mitigator. Bars break that down by province and territory. Two figures add the share of Canadians within 50 km of one, and the people more than 100 km away where radon is high. Its figures come from the latest monthly C-NRPP registry check, and we redraw it after each one.

The bars show where people live far from a certified mitigator

Each bar is the share of people in a province or territory who live more than 100 km away. We measure each census division in a straight line from where its people live to the nearest office of a business for hire with an active C-NRPP mitigation credential.

An office is not a service area, and businesses travel. A trip by road is longer. We place each office at the centre of its postal area. The table below lists divisions where under half the people live within 50 km of an office, highest radon share first.

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The survey shows where radon is high

The radon figure counts people more than 100 km from a certified mitigator. It counts them only in census divisions where the 2024 Cross-Canada Survey of Radon found 1 in 5 homes or more at or above 200 Bq/m³. That is Health Canada’s guideline, the level at which it recommends lowering radon. It is measured as the yearly average in a part of the home people use.

Divisions in one survey reporting unit share a figure. The graphic says nothing about one home. Only a test tells you your home’s radon level.

Look up the survey figure for your area

You can embed it, and it stays current

You may embed the graphic or use the image with the credit line on this page. All other rights are reserved for now. The survey’s working group has not yet cleared its figures for reuse, and we have not yet set an open licence for data built from the C-NRPP registry.

The embedded copy loads from our site, so it shows the current graphic. The change log records each redraw. The page shows the check date and when the next is due.

Get the full data for every census division

Provenance

Source
2024 Cross-Canada Survey of Radon, Version 1.1; C-NRPP Find a Professional directory, pulled 2026-10-21; Statistics Canada 2021 Census.
Method
Redrawn after each monthly check of the C-NRPP registry.
Date checked
2026-10-21
Next review
2026-11-01
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The data behind the graphic

Census divisions where under 50% of people live within 50 km of a certified mitigator’s office, highest radon share first, as of 2026-10-21

Radon share: the survey’s share of homes at or above 200 Bq/m³ for the division’s reporting unit. Distance: from the division’s population-weighted centre.

Census divisionProvinceHomes at or above 200 Bq/m³People within 50 kmNearest mitigator, kmPopulation, 2021
Division No. 16MB74.6%0%999,945
Division No. 8MB74.6%0%8513,877
Division No. 17MB65.1%1%7921,996
Division No. 18MB65.1%11.2%8726,636
Division No. 9MB65.1%3.3%7024,339
VictoriaNB57.7%5.8%7318,312
La Côte-de-GaspéQC54.5%0%13217,547
Le Rocher-PercéQC54.5%0%10017,219
Division No. 4MB52%23.9%659,665
Division No. 6MB52%23.2%689,906
Division No. 3SK51.5%4.9%12712,262
Division No. 4SK51.5%5.2%10010,872
KenoraON43.8%0%31566,000
Rainy RiverON43.8%0%29119,437
Division No. 10SK40.4%0%13416,483
Division No. 14SK40.4%0%20535,428
MadawaskaNB39.4%0%8932,603
Division No. 3AB35.9%6.8%13040,768
Division No. 1SK34.3%0%18330,351
Division No. 2SK34.3%0%10022,497
Columbia-ShuswapBC32.5%30.3%4557,021
PapineauQC31.5%32.6%5824,308
Division No. 12SK30.9%24.3%7423,208
Division No. 13SK30.9%0%17122,047
La MatanieQC30.3%0%13120,883
La MatapédiaQC30.3%0%11317,592
La MitisQC30.3%0%11818,363
Division No. 2NL30.2%0%19819,392
Division No. 3NL30.2%0%27513,920
Division No. 4NL30.2%0%28319,253
Division No. 5NL30.2%0%36740,396
Division No. 6NL30.2%0%23837,339
Division No. 7NL30.2%0%12133,044
Division No. 8NL30.2%0%27433,940
Division No. 9NL30.2%0%44814,733
Division No. 9SK30%0%17636,047
KamouraskaQC30%37.6%5621,307
L'IsletQC30%0%9217,598
La Haute-GaspésieQC30%0%10810,950
MontmagnyQC30%16.7%5822,481
Division No. 7AB29.8%0%14940,684
RenfrewON29.2%28.2%81106,365
Division No. 5AB28.6%41.6%4955,784
Division No. 1MB28.4%2.2%5720,114
Division No. 16SK28.3%1.7%11837,993
Division No. 17SK28.3%0%23747,834
Les EtcheminsQC28.1%0%6616,927
Division No. 5SK27%0%14731,583
Division No. 15SK26.5%7.8%10988,988
RichmondNS26.1%0%798,914
Division No. 7SK26%5.6%8247,413
Division No. 4AB24.2%0%1949,220
InvernessNS24.1%0%7917,346
VictoriaNS24.1%36.2%447,441
Division No. 12AB23.5%0%17367,483
Rimouski-NeigetteQC23.1%0%9057,191
CumberlandNS22.9%16.1%6430,538
CharlotteNB22.4%1.8%8726,015
Division No. 14AB22.2%0%17828,617
Division No. 9AB22%5.3%7620,569
Division No. 13AB20.7%22.7%7068,076
GreyON20.6%35.7%51100,905
Communauté maritime des Îles-de-la-MadeleineQC20.5%0%15012,654
PrincePE20.5%26.6%6546,234
StikineBC19.4%0%196683
Division No. 15AB19.2%0.5%7537,735
LambtonON19%13.5%64128,154
Le GranitQC18.9%26.5%5721,948
Division No. 10AB18.8%12.3%10895,455
PeterboroughON18.3%9.3%64147,681
Division No. 2AB16.7%0%141178,513
PictouNS16.7%0%7643,657
CharlevoixQC15.6%0%9313,371
Charlevoix-EstQC15.6%4.6%6915,409
BruceON14%35.1%5073,396
AlgomaON13.3%0%233113,777
CochraneON13.3%0%28377,963
SudburyON13.3%29.3%4022,368
TimiskamingON13.3%0%16931,424
ShelburneNS12.5%0%12313,704
Division No. 18SK11.5%0%37735,986
Division No. 1AB11.3%0%21182,513
HaliburtonON11.1%0%9920,571
HuronON11.1%47.5%5461,366
MuskokaON11.1%21.8%6766,674
Peace RiverBC11.1%0%26961,532
Division No. 17AB10.9%0%28762,132
Region 5NT10.9%0%4606,279
Region 6NT10.9%0%66020,805
Bulkley-NechakoBC10.1%0%19937,737
NipissingON10%0%11784,716
Parry SoundON10%0%12346,909
Abitibi-OuestQC8.3%0%29020,526
La Vallée-de-l'OrQC8.3%0%23743,347
PontiacQC8.3%22.8%7114,764
TémiscamingueQC8.3%0%16216,132
Central CoastBC8.2%0%3403,582
Mount WaddingtonBC8.2%0%33110,839
CaribooBC7.8%0%18162,931
La TuqueQC7.7%0%16315,038
Le Domaine-du-RoyQC7.7%0%8031,095
MékinacQC7.4%0%8512,762
ShawiniganQC7.4%0%10149,620
Kitimat-StikineBC7.1%0%38537,790
Division No. 18AB6.8%0%28813,226
Division No. 19AB6.8%0%312121,167
AntigonishNS6.2%0%10520,129
Division No. 10NL6.2%0%60224,332
GuysboroughNS6.2%0%1377,373
La Haute-Côte-NordQC6.2%0%8110,278
ManicouaganQC6.2%0%17330,158
Minganie--Le Golfe-du-Saint-LaurentQC6.2%0%4149,849
Sept-Rivières--CaniapiscauQC6.2%0%26538,240
StrathconaBC5.6%0%17548,150
Maria-ChapdelaineQC5.4%0%9324,149
Nord-du-QuébecQC5.4%0%66045,740
Cowichan ValleyBC5.3%1%6989,013
Northern RockiesBC4.8%0%5484,478
ArthabaskaQC4.7%29.5%5374,348
MatawinieQC4%48.5%5455,500
DrummondQC3.5%8.1%57107,967
D'AutrayQC3.2%44.4%5444,080
MaskinongéQC3.2%0%9337,292
Rouyn-NorandaQC3.2%0%24742,313
BécancourQC2.6%0%8120,748
DigbyNS2.6%0%11417,062
Nicolet-YamaskaQC2.6%0%8223,848
Pierre-De SaurelQC2.6%40.4%4951,843
YarmouthNS2.6%0%14824,947
CapitalBC1.8%0.3%92415,451
Comox ValleyBC1.6%0%14172,445
Squamish-LillooetBC1.1%25.8%8250,496
NanaimoBC1%1%70170,367
AbitibiQC0%0%29024,764
Alberni-ClayoquotBC0%0%13733,521
FranchevilleQC0%0%96158,343
Powell RiverBC0%0%11621,496
Skeena-Queen CharlotteBC0%0%51918,181
Division No. 11NLno data0%9082,323
Division No. 19MBno data0%16015,381
Division No. 20MBno data0%2029,634
Division No. 21MBno data0%40821,871
Division No. 22MBno data0%53242,226
Division No. 23MBno data0%7784,690
KitikmeotNUno data0%1,4276,458
KivalliqNUno data0%1,29611,045
ManitoulinONno data0%10813,935
QikiqtaalukNUno data0%1,99519,355
Region 1NTno data0%8936,205
Region 2NTno data0%6982,259
Region 3NTno data0%7582,650
Region 4NTno data0%7302,872
RestigoucheNBno data39.4%6130,700

153 census divisions

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