The Power of Information

National Drinking Water Database


Aroclor 1242 in Massachusetts


Aroclor 1242 is a member of the polychlorinated biphenyl (PCB) group of industrial chemicals used as dielectrics, coolants and lubricants in electrical equipment; PCBs contaminate water by leaching from landfills or other waste deposits. [read more]

The Most Polluted Communities in Massachusetts

1 water utilities reported detecting Aroclor 1242 in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Aroclor 1242 level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Norfolk Water Department
MA
6,1751 of 20.08 ppb
(0 to 0.15 ppb)

Health Based Limits for Aroclor 1242

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 ppb
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.0.5 ppb

Violation Summary for Aroclor 1242 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 regularly28