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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.

StateWater Suppliers with 1,1-Dichloropropanone contamination
SystemsPopulation
New Jersey3658,387
Total3658,387

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

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1South River W Dept
South River, NJ
14,0001 of 30.83 ppb
(0 to 2.5 ppb)
2South Brunswick Twp W Di
South Brunswick Twp, NJ
35,0002 of 140.68 ppb
(0 to 5.5 ppb)
3New Jersey American - Elizabethtown
Plainfield, NJ
609,3871 of 100.5 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 Carcinogenicity1,1-DICHLOROPROPANONE•Low to moderate concern for potential carcinogenicity
RTECS®- Mutation Research 19942-PROPANONE, 1,1-DICHLORO-• mutagenic - Positive mutation assay: other mutation test systems (Escherichia coli )
RTECS®- Toxicology and Applied Pharmacology 19872-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 CarcinogenicityEPA (U.S. Environmental Protection Agency). 2006. EPA Water Disinfection By-Products with Carcinogenicity Estimates. Last updated: 10 April 2006.
RTECS®- Mutation Research 1994RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 341,1,1994
RTECS®- Toxicology and Applied Pharmacology 1987RTECS®- Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 91,46,1987

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