The Power of Information

National Drinking Water Database


Radon in New York


Radon is a radioactive breakdown product of radium and uranium in soil, rock and water; it is often present in groundwater. [read more]

The Most Polluted Communities in New York

30 water utilities reported detecting Radon in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Radon level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Cotswold Water Supply
Hartsdale, NY
1501 of 17150 pCi/L
(7150 pCi/L)
2Empire Mhp
Homer, NY
641 of 11842.8 pCi/L
(1842.8 pCi/L)
3Truxton Scattered Housing
Truxton, NY
301 of 1763.8 pCi/L
(763.8 pCi/L)
4Cincinnatus Water District
Cincinnatus, NY
6504 of 4735.48 pCi/L
(211.7 to 1127.9 pCi/L)
5Mcgraw Village
Mcgraw, NY
1,3063 of 3693.13 pCi/L
(232 to 1039.7 pCi/L)
6Country Meadow Trailer Park
Harford, NY
1222 of 2673 pCi/L
(572.3 to 773.7 pCi/L)
7Mount Kisco Water Department
Mount Kisco, NY
9,6005 of 5638.88 pCi/L
(496.89 to 796.96 pCi/L)
8Cortlandville Town Water
Cortland, NY
4,3004 of 4592 pCi/L
(358 to 935.8 pCi/L)
9Creamery Hills Senior Living Center
Harford, NY
481 of 1586.2 pCi/L
(586.2 pCi/L)
10Marathon Village
Marathon, NY
1,1075 of 5534.97 pCi/L
(173 to 802.73 pCi/L)

Health Based Limits for Radon

StandardDescriptionLevel
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.1.5 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.150 pCi/L

Violation Summary for Radon in New York

There are no violations reported for this contaminant in New York