The Power of Information

National Drinking Water Database

Alpha particle activity (incl. radon & uranium) in Montana

Alpha particles are a form of radiation associated with mining waste pollutants and natural sources. [read more]

The Most Polluted Communities in Montana

149 water utilities reported detecting Alpha particle activity (incl. radon & uranium) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Alpha particle activity (incl. radon & uranium) level

RankSystem Population Served Positive test results of total reported tests Average Level
1Bigfork County Water and Sewer
Bigfork, MT
2,5848 of 827.28 pCi/L
(19.7 to 36 pCi/L)
2Star Meadows
324 of 425.5 pCi/L
(15.1 to 35.7 pCi/L)
3Hangmans Tree Wua
Clancy, MT
1581 of 125.1 pCi/L
(25.1 pCi/L)
4Lakeshore Heights Hoa
Kalispell, MT
1005 of 523.93 pCi/L
(16.3 to 31.13 pCi/L)
5Forest Park Water Users Association
Clancy, MT
4006 of 620.8 pCi/L
(7 to 29.6 pCi/L)
6Ranch Headquarters
Gardiner, MT
854 of 419.1 pCi/L
(19.1 pCi/L)
7Sheaver Creek Water and Sewer District
Bigfork, MT
4501 of 118 pCi/L
(18 pCi/L)
8Bahny Brae Subdivision
East Helena, MT
354 of 417.58 pCi/L
(15.5 to 22.8 pCi/L)
9Jette Lake Landowners Association
Polson, MT
2007 of 716.8 pCi/L
(10.5 to 21 pCi/L)
10Pebble Gardens Mobile Home Ct
Missoula, MT
1251 of 116.5 pCi/L
(16.5 pCi/L)

Health Based Limits for Alpha particle activity (incl. radon & uranium)

Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.15 pCi/L

Violation Summary for Alpha particle activity (incl. radon & uranium) in Montana

There are no violations reported for this contaminant in Montana