The Power of Information

National Drinking Water Database


Alpha particle activity (incl. radon & uranium) in North Carolina


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

The Most Polluted Communities in North Carolina

128 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
(Range)
1Southhills Southwoods Sd
Clayton, NC
7144 of 433.2 pCi/L
(31.9 to 33.8 pCi/L)
2Cedar Ridge Estates
Cashiers, NC
971 of 130.78 pCi/L
(30.78 pCi/L)
3Jefferson Landing
Jefferson, NC
4004 of 430.1 pCi/L
(21.4 to 34.1 pCi/L)
4Yorkwood S/D
Gastonia, NC
1981 of 128.5 pCi/L
(28.5 pCi/L)
5Mallards Crossing S/D
Raleigh, NC
6731 of 127.5 pCi/L
(27.5 pCi/L)
6Deerhurst Mhp
Wendell, NC
4923 of 423.45 pCi/L
(0 to 32.25 pCi/L)
7Knightdale Estates Mhp
Raleigh, NC
2851 of 123 pCi/L
(23 pCi/L)
8River Park S/D
Mooresville, NC
5777 of 921.63 pCi/L
(0 to 41 pCi/L)
9Fletcher Academy Inc
Fletcher, NC
8171 of 120.8 pCi/L
(20.8 pCi/L)
10Oakes Plantation S/D
Knightdale, NC
646 of 619.56 pCi/L
(15.26 to 25.19 pCi/L)

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

StandardDescriptionLevel
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 North Carolina

There are no violations reported for this contaminant in North Carolina