National Drinking Water Database
National Drinking Water Database - Chemical Contaminants
delta-BHC
Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.
delta-BHC (benzene hexachloride) is an insecticide formerly used on fruit, vegetable and forest crops.
Detected |
Found above health guidelines |
Found above legal limit |
|
|---|---|---|---|
| States | 1 |
- |
- |
| Water utilities | 1 |
- |
- |
| People Served | 201,000 |
- |
- |
Health Concerns for delta-BHC:
delta-BHC Exposure by State
Water utilities in 1 states have reported detecting delta-BHC in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.
| State | Water Suppliers with delta-BHC contamination | |
|---|---|---|
| Systems | Population | |
| Delaware | 1 | 201,000 |
| Total | 1 | 201,000 |
The Most Polluted Communities
1 water utilities reported detecting delta-BHC in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average delta-BHC level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Artesian Water Company Newark, DE | 201,000 | 1 of 83 | < 0.01 ppb (0 to 0.02 ppb) |
Testing Summary for delta-BHC
| Are tests routinely required for delta-BHC by federal law? | No |
| Water suppliers reporting tests for delta-BHC (2004-2009): | 1,074 of 47,576 |
| Average testing rate for water supplier reporting tests (2004-2009): | 0.3 per year |
Cancer
| Type of concern: | Reference: |
| Cancer - not classifiable/not likely to be human carcinogen | EPA Integrated Risk Information System (IRIS) |
Government, industry, academic studies and classifications
| government/industry list/academic study | appears on list as | classification(s) |
| EPA Integrated Risk Information System (IRIS) | DELTA-HEXACHLOROCYCLOHEXANE (DELTA-HCH) | •Group D: Not classifiable as to human carcinogenicity (EPA classification) |
references
| government/industry list/academic study | reference |
| EPA Integrated Risk Information System (IRIS) | EPA (U.S. Environmental Protection Agency). 2008. Integrated Risk Information System (IRIS). Evidence for human carcinogenicity based on 1986-2005 guidelines. |
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