The Power of Information

National Drinking Water Database


Radon in Maine


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 Maine

197 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)
1Pinewood Acres Trailer Park
Bowdoin, ME
951 of 126800 pCi/L
(26800 pCi/L)
2Tanglewood Mobile Estates 1
Hollis Center, ME
552 of 226530 pCi/L
(25000 to 28060 pCi/L)
3Range Pond Apts Poland Spring
Cumberland, ME
301 of 124200 pCi/L
(24200 pCi/L)
4Nichols Trailer Park
Shelburne, ME
753 of 323276.67 pCi/L
(8200 to 31926 pCi/L)
5Muirfield Village
Osterville, ME
335 of 520265.3 pCi/L
(15300 to 29500 pCi/L)
6Howards Trailer Park
Bucksport, ME
652 of 220096 pCi/L
(16592 to 23600 pCi/L)
7Three Rivers M H Community
Brownville, ME
631 of 113594.5 pCi/L
(13594.5 pCi/L)
8Pines Trailer Park
Damariscotta, ME
504 of 411448.25 pCi/L
(7960 to 13028 pCi/L)
9Hebron Heights
Rockwood, ME
301 of 110925 pCi/L
(10925 pCi/L)
10Poland Country Village Mhp,inc
East Poland, ME
1404 of 49254.5 pCi/L
(8085 to 10527 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 Maine

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

Violation TypeNumber of Violations
Over maximum contaminant level, Single Sample7