National Drinking Water Database
National Drinking Water Database - Chemical Contaminants
Dibenzofuran
Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.
Dibenzofuran is a pollutant released from coke oven dust, grate ash, fly ash and flame soot.
Detected |
Found above health guidelines |
Found above legal limit |
|
|---|---|---|---|
| States | 1 |
- |
- |
| Water utilities | 1 |
- |
- |
| People Served | 6,699 |
- |
- |
Health Concerns for Dibenzofuran:
Dibenzofuran Exposure by State
Water utilities in 1 states have reported detecting Dibenzofuran in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.
| State | Water Suppliers with Dibenzofuran contamination | |
|---|---|---|
| Systems | Population | |
| Delaware | 1 | 6,699 |
| Total | 1 | 6,699 |
The Most Polluted Communities
1 water utilities reported detecting Dibenzofuran in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average Dibenzofuran level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | Seaford Water Department Seaford, DE | 6,699 | 2 of 4 | 0.03 ppb (0 to 0.05 ppb) |
Testing Summary for Dibenzofuran
| Are tests routinely required for Dibenzofuran by federal law? | No |
| Water suppliers reporting tests for Dibenzofuran (2004-2007): | 115 of 47,576 |
| Average testing rate for water supplier reporting tests (2004-2007): | 1.0 per year |
Organ system toxicity (non-reproductive)
| Type of concern: | Reference: |
| Known human respiratory toxicant | EPA Hazardous Air Pollutants |
| One or more animal studies show classified as toxic effects at moderate doses (low dose studies may be unavailable for this ingredient) | EPA Toxic Release Inventory PBTs |
| Classified as not expected to be potentially toxic or harmful | Environment Canada Domestic Substance List |
Persistence and bioaccumulation
| Type of concern: | Reference: |
| Persistent, bioaccumulative in wildlife | EPA PBTs - Waste Minimization Program (RCRA) |
| Not suspected to be bioaccumulative | Environment Canada Domestic Substance List |
Cancer
| Type of concern: | Reference: |
| Cancer - not classifiable/not likely to be human carcinogen | EPA Integrated Risk Information System (IRIS) |
| One or more in vitro tests on mammalian cells show positive mutation results | RTECS®- Environmental and Molecular Mutagenesis 1987 |
Ecotoxicology
| Type of concern: | Reference: |
| Not suspected to be an environmental toxin | Environment Canada Domestic Substance List |
Government, industry, academic studies and classifications
| government/industry list/academic study | appears on list as | classification(s) |
| EPA Hazardous Air Pollutants | DIBENZOFURANS | •Hazardous air pollutant under Clean Air Act |
| EPA Toxic Release Inventory PBTs | DIBENZOFURAN | •Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs |
| EPA PBTs - Waste Minimization Program (RCRA) | DIBENZOFURAN | •Persistent, bioaccumulative toxicant - Resource Conservation and Recovery Act, priority chemical for voluntary waste/emission reductions |
| EPA Integrated Risk Information System (IRIS) | DIBENZOFURAN | •Group D: Not classifiable as to human carcinogenicity (EPA classification) |
| Environment Canada Domestic Substance List | DIBENZOFURAN | •This chemical was NOT flagged by CEPA for further attention. The chemical was flagged for suspected persistence. |
| RTECS®- Environmental and Molecular Mutagenesis 1987 | DIBENZOFURAN | • mutagenic - Positive mutation assay: Sister Chromatid Exchange (hamster ovr) |
references
| government/industry list/academic study | reference |
| EPA Hazardous Air Pollutants | EPA (U.S. Environmental Protection Agency). 2005. Office of Air. The 112(b)1 Hazardous Air Pollutants List (as modified). Last modified: 12 Dec 2005. |
| EPA Toxic Release Inventory PBTs | EPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule. |
| EPA PBTs - Waste Minimization Program (RCRA) | EPA (U.S. Environmental Protection Agency). 1998. Resource Conservatin and Recovery Act (RCRA) Waste Minimization Program - priority chemicals for elimination or reduction. |
| 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. |
| Environment Canada Domestic Substance List | EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry. |
| RTECS®- Environmental and Molecular Mutagenesis 1987 | RTECS®- Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 10(Suppl 10),1,1987 |
"RTECS®" is a United States trademark owned and licensed under authority of the U.S. Government, by and through MDL Information Systems, Inc.