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National Drinking Water Database


Gross beta particle activity (pCi/L) in Connecticut


Beta particles are a form of radiation frequently associated with nuclear testing and radioactive mineral deposits. [read more]

The Most Polluted Communities in Connecticut

57 water utilities reported detecting Gross beta particle activity (pCi/L) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Gross beta particle activity (pCi/L) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1CTWC - Crystal Water Company
Danielson, CT
6,3784 of 427.49 pCi/L
(24.02 to 35.33 pCi/L)
2Tolland Water Department
Tolland, CT
1,2514 of 427.18 pCi/L
(24 to 30.6 pCi/L)
3East Lyme Water & Sewer Commission
Niantic, CT
15,2454 of 523.15 pCi/L
(0 to 31.6 pCi/L)
4Sterling Water System
Oneco, CT
3084 of 422.83 pCi/L
(18.9 to 32.23 pCi/L)
5CTWC - Northern Reg-Somers System
East Windsor, CT
1,0508 of 1314.47 pCi/L
(0 to 37.8 pCi/L)
6CTWC - Unionville Water Company
Unionville, CT
13,0684 of 414.1 pCi/L
(4.5 to 24 pCi/L)
7Connecticut Health of Greenwich
Greenwich, CT
901 of 113.68 pCi/L
(13.68 pCi/L)
8Scwa, Chesterfield Division (Chf)
Gales Ferry, CT
5243 of 312.9 pCi/L
(5.1 to 16.9 pCi/L)
9Sandy Lane Village Condominium Assn
Brookfield, CT
3183 of 811.12 pCi/L
(0 to 39.2 pCi/L)
10Candlewood Terr/Carmen Hill Orch.wtrco
New Milford, CT
4645 of 510.87 pCi/L
(8.58 to 12.32 pCi/L)

Health Based Limits for Gross beta particle activity (pCi/L)

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 Gross beta particle activity (pCi/L) in Connecticut

There are no violations reported for this contaminant in Connecticut