The Power of Information

National Drinking Water Database


Alpha particle activity (excl radon and uranium) in Iowa


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

The Most Polluted Communities in Iowa

28 water utilities reported detecting Alpha particle activity (excl radon and 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 (excl radon and uranium) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Lacina Meadows Residential Subdivision
Iowa City, IA
389 of 919.84 pCi/L
(15.8 to 30.3 pCi/L)
2Sleepy Hollow Campground & RV Park
Oxford, IA
702 of 219.1 pCi/L
(18.8 to 19.4 pCi/L)
3Anamosa Municipal Water Supply
Anamosa, IA
5,4942 of 218.45 pCi/L
(15.9 to 21 pCi/L)
4Lehigh Water Supply
Lehigh, IA
4973 of 318.13 pCi/L
(12.4 to 21.7 pCi/L)
5Iowa City Regency Mobile Home Community
North Libe, IA
7002 of 217.75 pCi/L
(14 to 21.5 pCi/L)
6Homestead Water Supply
Amana, IA
1341 of 116.1 pCi/L
(16.1 pCi/L)
7Wellman Municipal Waterworks
Wellman, IA
1,3931 of 115.7 pCi/L
(15.7 pCi/L)
8West Liberty Water Utility
West Liber, IA
3,6001 of 115.4 pCi/L
(15.4 pCi/L)
9Bayard Water Supply
Bayard, IA
5363 of 315.33 pCi/L
(4.28 to 21.3 pCi/L)
10Jolley Water Supply
Jolley, IA
541 of 114.5 pCi/L
(14.5 pCi/L)

Health Based Limits for Alpha particle activity (excl radon and uranium)

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 pCi/L
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.0.15 pCi/L
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
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.15 pCi/L

Violation Summary for Alpha particle activity (excl radon and uranium) in Iowa

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in Iowa since 2004

Violation TypeNumber of Violations
Failure to monitor regularly10
Over maximum contaminant level, Average9