National Drinking Water Database
National Drinking Water Database - Chemical Contaminants
1,1-Dichloropropanone
Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.
1,1-Dichloropropanone is an unregulated byproduct of tap water disinfection that forms when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.
Detected |
Found above health guidelines |
Found above legal limit |
|
|---|---|---|---|
| States | 1 |
- |
- |
| Water utilities | 3 |
- |
- |
| People Served | 658,387 |
- |
- |
Health Concerns for 1,1-Dichloropropanone:
1,1-Dichloropropanone Exposure by State
Water utilities in 1 states have reported detecting 1,1-Dichloropropanone in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.
| State | Water Suppliers with 1,1-Dichloropropanone contamination | |
|---|---|---|
| Systems | Population | |
| New Jersey | 3 | 658,387 |
| Total | 3 | 658,387 |
The Most Polluted Communities
3 water utilities reported detecting 1,1-Dichloropropanone in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies
Ranked by highest average 1,1-Dichloropropanone level
| Rank | System | Population Served | Positive test results of total reported tests | Average Level (Range) |
|---|---|---|---|---|
| 1 | South River W Dept South River, NJ | 14,000 | 1 of 3 | 0.83 ppb (0 to 2.5 ppb) |
| 2 | South Brunswick Twp W Di South Brunswick Twp, NJ | 35,000 | 2 of 14 | 0.68 ppb (0 to 5.5 ppb) |
| 3 | New Jersey American - Elizabethtown Plainfield, NJ | 609,387 | 1 of 10 | 0.5 ppb (0 to 5 ppb) |
Testing Summary for 1,1-Dichloropropanone
| Are tests routinely required for 1,1-Dichloropropanone by federal law? | No |
| Water suppliers reporting tests for 1,1-Dichloropropanone (2004-2006): | 224 of 47,576 |
| Average testing rate for water supplier reporting tests (2004-2006): | 1.5 per year |
Cancer
| Type of concern: | Reference: |
| Mutagen - limited evidence | EPA Water Disinfection By-Products Carcinogenicity |
| One or more in vitro tests non-mammalian cells show positive mutation results | RTECS®- Toxicology and Applied Pharmacology 1987 |
| One or more in vitro tests non-mammalian cells show positive mutation results | RTECS®- Mutation Research 1994 |
Government, industry, academic studies and classifications
| government/industry list/academic study | appears on list as | classification(s) |
| EPA Water Disinfection By-Products Carcinogenicity | 1,1-DICHLOROPROPANONE | •Low to moderate concern for potential carcinogenicity |
| RTECS®- Mutation Research 1994 | 2-PROPANONE, 1,1-DICHLORO- | • mutagenic - Positive mutation assay: other mutation test systems (Escherichia coli ) |
| RTECS®- Toxicology and Applied Pharmacology 1987 | 2-PROPANONE, 1,1-DICHLORO- | • mutagenic - Positive mutation assay: Mutation in Micro-organism (Salmonella typhimurium ) |
references
| government/industry list/academic study | reference |
| EPA Water Disinfection By-Products Carcinogenicity | EPA (U.S. Environmental Protection Agency). 2006. EPA Water Disinfection By-Products with Carcinogenicity Estimates. Last updated: 10 April 2006. |
| RTECS®- Mutation Research 1994 | RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 341,1,1994 |
| RTECS®- Toxicology and Applied Pharmacology 1987 | RTECS®- Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 91,46,1987 |
"RTECS®" is a United States trademark owned and licensed under authority of the U.S. Government, by and through MDL Information Systems, Inc.