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.
| State | Water Suppliers with Dichlorobiphenyl contamination | |
|---|---|---|
| Systems | Population | |
| Maryland | 1 | 13,200 |
| Total | 1 | 13,200 |
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
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Maryland American Water Company Bel Air, MD | 13,200 | 1 of 2 | 0.05 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 Carcinogens | DI-PCB | •Developmental toxicity hazards: recognized |
| Proposition 65 List of Carcinogens | DI-PCB | •Cancer hazards: recognized |
references
| government/industry list/academic study | reference |
| Scorecard.org Toxicity Information | Proposition 65 List of Carcinogens (July 2004) can be obtained from http://www.oehha.ca.gov/prop65/prop65_list/Newlist.html.-MC |
| Scorecard.org Toxicity Information | Proposition 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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