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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Dichlorobiphenyl


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

Dichlorobiphenyl 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.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
1
-
-
People Served
13,200
-
-

Health Concerns for Dichlorobiphenyl:


Dichlorobiphenyl Exposure by State

Water utilities in 1 states have reported detecting Dichlorobiphenyl in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Dichlorobiphenyl contamination
SystemsPopulation
Maryland113,200
Total113,200

The Most Polluted Communities

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

Ranked by highest average Dichlorobiphenyl level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Maryland American Water Company
Bel Air, MD
13,2001 of 20.05 ppb
(0 to 0.1 ppb)

Testing Summary for Dichlorobiphenyl

Are tests routinely required for Dichlorobiphenyl by federal law?No
Water suppliers reporting tests for Dichlorobiphenyl (2004-2007):18 of 47,576
Average testing rate for water supplier reporting tests (2004-2007):0.7 per year

Developmental/reproductive toxicity

Type of concern: Reference:
Human developmental toxicant - strong evidence Proposition 65 List of Carcinogens

Cancer

Type of concern: Reference:
Cancer - strong evidence Proposition 65 List of Carcinogens



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
Proposition 65 List of CarcinogensDI-PCB•Developmental toxicity hazards: recognized
Proposition 65 List of CarcinogensDI-PCB•Cancer hazards: recognized



references

government/industry list/academic study reference
Scorecard.org Toxicity InformationProposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.-MC
Scorecard.org Toxicity InformationProposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.-MC

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