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National Drinking Water Database

National Drinking Water Database - Chemical Contaminants

Aroclor 1248

Status: Regulated - EPA has established a maximum legal limit in tapwater for this contaminant.

Aroclor 1248 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]

Found above
health guidelines
Found above
legal limit
Water utilities
People Served

Health Concerns for Aroclor 1248:

Aroclor 1248 Exposure by State

Water utilities in 2 states have reported detecting Aroclor 1248 in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Aroclor 1248 contaminationWater suppliers reporting Aroclor 1248 above health-based limits
Rhode Island151,000151,000

The Most Polluted Communities

2 water utilities reported detecting Aroclor 1248 in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Aroclor 1248 level

RankSystem Population Served Positive test results of total reported tests Average Level
1Bristol County Water Authority
Warren, RI
51,0001 of 40.07 ppb
(0 to 0.28 ppb)
2Artesian Water Company
Newark, DE
201,0001 of 83< 0.01 ppb
(0 to 0.17 ppb)

Health Based Limits for Aroclor 1248

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

Testing Summary for Aroclor 1248

Are tests routinely required for Aroclor 1248 by federal law?Yes
Water suppliers reporting tests for Aroclor 1248 (2004-2009):6,568 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.3 per year

Violation Summary for Aroclor 1248

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards for Aroclor 1248 since 2004

Maximum Contaminant Level Exceedance Violations0
Monitoring Violations76
Reporting Violations0

Endocrine disruption

Type of concern: Reference:
Human disruptor - strong evidence European Commission on Endocrine Disruption

Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Commission on Endocrine DisruptionPCB AROCLOR 1248HH-CAT1;


government/industry list/academic study reference
European Commission on Endocrine DisruptionEU (European Union)- Strategy for Endocrine Disrupters 2007. Commision on endocrin disruption requested by the European Parliament in 1998.

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