The Power of Information

National Drinking Water Database

Alpha particle activity (incl. radon & uranium) in Massachusetts

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

The Most Polluted Communities in Massachusetts

131 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
1Woodvale Condominium
Acton, MA
17014 of 1431.5 pCi/L
(26 to 38 pCi/L)
2Hillcrest Water District
Leicester, MA
1,50019 of 1926.29 pCi/L
(1.91 to 43.9 pCi/L)
3Pinewood ON The Green Condos
Oxford, MA
504 of 420.5 pCi/L
(18 to 22 pCi/L)
4The Preserve AT Hopkinton Condo
Hopkinton, MA
801 of 119 pCi/L
(19 pCi/L)
5Wampus Avenue Apartments
Acton, MA
705 of 518.4 pCi/L
(13 to 21 pCi/L)
6Strawberry Hill Apartments
Acton, MA
951 of 117.6 pCi/L
(17.6 pCi/L)
7Staffordshire Country Estates
Leicester, MA
12029 of 2917.33 pCi/L
(8.45 to 34 pCi/L)
8Leicester Water Supply District
Leicester, MA
3,30020 of 2016.59 pCi/L
(6.2 to 30.9 pCi/L)
9Haystack Estates
7512 of 1215.29 pCi/L
(1.33 to 40.27 pCi/L)
10Colony Heights Condominium
801 of 111.4 pCi/L
(11.4 pCi/L)

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

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 Massachusetts

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

Violation TypeNumber of Violations
Failure to monitor regularly9
Over maximum contaminant level, Average4