The Power of Information

National Drinking Water Database


Alpha particle activity (excl radon and uranium) in Connecticut


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

The Most Polluted Communities in Connecticut

300 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)
1Woodhall School, Inc
Bethlehem, CT
687 of 820.43 pCi/L
(0 to 42.3 pCi/L)
2Birmingham Util - Westchester East Lp
Stafford Springs, CT
1534 of 412.04 pCi/L
(4.67 to 25.33 pCi/L)
3Wildwood Water Company
Old Lyme, CT
1326 of 610.63 pCi/L
(0.36 to 32.21 pCi/L)
4Jensens, Inc. Beechwood Residential
Southington, CT
7505 of 59.15 pCi/L
(3.94 to 18.8 pCi/L)
5Hawks Nest Beach 3
Old Lyme, CT
5005 of 58.94 pCi/L
(5.78 to 11.23 pCi/L)
6Birmingham Util - Pompey Hollow Division
Stafford Springs, CT
324 of 48.54 pCi/L
(7.4 to 9.96 pCi/L)
7Birmingham Util - Spice Hill Division
Stafford Springs, CT
60010 of 108.5 pCi/L
(2.6 to 17.92 pCi/L)
8Sandy Lane Village Condominium Assn
Brookfield, CT
3187 of 188.44 pCi/L
(0 to 38.46 pCi/L)
9Whipples Mobile Home Park
New Haven, CT
16411 of 118.35 pCi/L
(2.2 to 13.08 pCi/L)
10Ledgewood Condominium Assn - Boxwood Dr
Southbury, CT
3612 of 168.16 pCi/L
(0 to 26.66 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 Connecticut

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

Violation TypeNumber of Violations
Failure to monitor regularly244
Over maximum contaminant level, Average31