National Drinking Water Database

• Read the Research
• Get a Water Filter
• Tips for Safe Water
• FAQs
• EWG Needs Your Help. As little as $5 can help.

National Drinking Water Database - Chemical Contaminants

1,3-Dichloropropane

Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

1,3-Dichloropropane is an industrial solvent and an intermediate for manufacture of other chemicals.

	Detected	Found above health guidelines	Found above legal limit
States	6	-	-
Water utilities	9	-	-
People Served	255,145	-	-

Health Concerns for 1,3-Dichloropropane:

• Cancer

1,3-Dichloropropane Exposure by State

Water utilities in 6 states have reported detecting 1,3-Dichloropropane in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

State	Water Suppliers with 1,3-Dichloropropane contamination
	Systems	Population
Delaware	1	201,000
New York	4	50,515
Missouri	1	2,779
California	1	500
Nevada	1	350
Texas	1	1
Total	9	255,145

The Most Polluted Communities

9 water utilities reported detecting 1,3-Dichloropropane in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average 1,3-Dichloropropane level

Rank	System	Population Served	Positive test results of total reported tests	Average Level (Range)
1	Wild Oaks Water Company Rockport, NY	805	1 of 3	55.67 ppb (0 to 167 ppb)
2	Crescent Valley Water System Crescent Valley, NV	350	1 of 2	0.85 ppb (0 to 1.7 ppb)
3	Bedford Hills/Taconic Corr. Facilities Bedford Hills, NY	1,100	1 of 1	0.5 ppb (0.5 ppb)
4	Mcwa, Genesee West Rochester, NY	800	2 of 3	0.12 ppb (0 to 0.24 ppb)
5	Squaw Valley Mutual Water Comp Olympic Valley, CA	500	1 of 2	0.11 ppb (0 to 0.22 ppb)
6	Bluff Dale Wsc Bluff Dale, TX	1	1 of 5	0.08 ppb (0 to 0.39 ppb)
7	Hicksville Wd Hicksville, NY	47,810	1 of 187	< 0.01 ppb (0 to 0.2 ppb)
8	Artesian Water Company Newark, DE	201,000	1 of 134	< 0.01 ppb (0 to 0.09 ppb)
9	Camdenton Camdenton, MO	2,779	1 of 22	< 0.01 ppb (< .01 to 3.4E-5 ppb)

Testing Summary for 1,3-Dichloropropane

Are tests routinely required for 1,3-Dichloropropane by federal law?	No
Water suppliers reporting tests for 1,3-Dichloropropane (2004-2009):	21,404 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):	0.6 per year

Cancer

Type of concern:	Reference:
One or more in vitro tests on mammalian cells show positive mutation results	RTECS®- Mutation Research 1996
One or more in vitro tests on mammalian cells show positive mutation results	RTECS®- Environmental Mutagenesis 1987
One or more in vitro tests non-mammalian cells show positive mutation results	RTECS®- Environmental Mutagenesis 1980

Government, industry, academic studies and classifications

government/industry list/academic study	appears on list as	classification(s)
RTECS®- Environmental Mutagenesis 1980	PROPANE, 1,3-DICHLORO-	• mutagenic - Positive mutation assay: Mutation in Micro-organism (Salmonella typhimurium )
RTECS®- Environmental Mutagenesis 1987	PROPANE, 1,3-DICHLORO-	• mutagenic - Positive mutation assay: Sister Chromatid Exchange (hamster lng)
RTECS®- Mutation Research 1996	PROPANE, 1,3-DICHLORO-	• mutagenic - Positive mutation assay: DNA Damage ( human lym) • mutagenic - Positive mutation assay: Micronucleus test ( human lym)

references

government/industry list/academic study	reference
RTECS®- Environmental Mutagenesis 1980	RTECS®- Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. 2,59,1980
RTECS®- Environmental Mutagenesis 1987	RTECS®- Environmental Mutagenesis. (New York, NY) V.1-9, 1979-87. For publisher information, see EMMUEG. 9,401,1987
RTECS®- Mutation Research 1996	RTECS®- Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 371,185,1996

"RTECS®" is a United States trademark owned and licensed under authority of the U.S. Government, by and through MDL Information Systems, Inc.