The Power of Information

National Drinking Water Database


Alpha particle activity (excl radon and uranium) in North Carolina


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

The Most Polluted Communities in North Carolina

322 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)
1Hanna`s Garden
Cary, NC
301 of 127.6 pCi/L
(27.6 pCi/L)
2Skyview Park
Gastonia, NC
1704 of 427.55 pCi/L
(23.2 to 29 pCi/L)
3Tradewinds S/D
Raleigh, NC
4459 of 926.43 pCi/L
(17.72 to 40.91 pCi/L)
4Green Pines S/D
Knightdale, NC
1621 of 124.9 pCi/L
(24.9 pCi/L)
5Meadow Glen S/D
Knightdale, NC
794 of 424.82 pCi/L
(24.82 pCi/L)
6Bannertown Hills S/D
Mt Airy, NC
714 of 422.22 pCi/L
(22.22 pCi/L)
7Kynwood S/D
Kernersville, NC
944 of 421.33 pCi/L
(21.33 pCi/L)
8Pebble Brook Acres S/D
Concord, NC
842 of 221.18 pCi/L
(14.5 to 27.85 pCi/L)
9Davidson Woods S/D
Statesville, NC
564 of 420.3 pCi/L
(20.3 pCi/L)
10River Mill Condominiums
Wake Forest, NC
854 of 419.83 pCi/L
(14.05 to 30.3 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 North Carolina

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

Violation TypeNumber of Violations
Failure to monitor regularly464
Over maximum contaminant level, Average94
Over maximum contaminant level, Single Sample3