The Power of Information

National Drinking Water Database


Alpha particle activity (excl radon and uranium) in Pennsylvania


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

The Most Polluted Communities in Pennsylvania

129 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)
1Perkiomen Ridge
Frederick, PA
5081 of 118.94 pCi/L
(18.94 pCi/L)
2Bonneaville Muni Water Auth
Gettysburg, PA
2,3471 of 114.82 pCi/L
(14.82 pCi/L)
3Bcwsa Solebury
Warrington, PA
1,5001 of 114.8 pCi/L
(14.8 pCi/L)
4Dover Boro Water Sys
Dover, PA
1,9001 of 114.4 pCi/L
(14.4 pCi/L)
5Cavalry Heights Mhp
Gettysburg, PA
901 of 112.8 pCi/L
(12.8 pCi/L)
6Scenic View
King Of Prussia, PA
601 of 112 pCi/L
(12 pCi/L)
7Silver Spring Water Assn
Chambersburg, PA
1103 of 39.8 pCi/L
(6.22 to 14.77 pCi/L)
8New Oxford Manor Mhp
New Oxford, PA
3501 of 19.1 pCi/L
(9.1 pCi/L)
9Superior Water Company Main
Worcester, PA
7,5004 of 48.69 pCi/L
(6.93 to 9.7 pCi/L)
10Perry Phillips Mobile Homes
Coatesville, PA
601 of 18.5 pCi/L
(8.5 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 Pennsylvania

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

Violation TypeNumber of Violations
Failure to monitor regularly474
Over maximum contaminant level, Average12