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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

m-Dichlorobenzene


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

m-Dichlorobenzene is used as a fumigant, an insecticide, and an intermediate in agrochemical and pharmaceutical manufacturing; it may form as a byproduct of water disinfection.

 
Detected
Found above
health guidelines
Found above
legal limit
States
7
-
-
Water utilities
14
-
-
People Served
28,451
-
-

Health Concerns for m-Dichlorobenzene:


m-Dichlorobenzene Exposure by State

Water utilities in 7 states have reported detecting m-Dichlorobenzene in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with m-Dichlorobenzene contamination
SystemsPopulation
New Jersey317,303
New York46,020
Missouri12,779
Virginia31,918
New Hampshire1210
Vermont1126
Indiana195
Total1428,451

The Most Polluted Communities

14 water utilities reported detecting m-Dichlorobenzene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average m-Dichlorobenzene level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Coburn Mhp
Clarendon, VT
1265 of 61.52 ppb
(0 to 2.2 ppb)
2Mont Vernon Village School
NH
2101 of 21.3 ppb
(0 to 2.6 ppb)
3Wappingers Falls Mobile Home P
Wappingers Falls, NY
1151 of 10.6 ppb
(0.6 ppb)
4Bedford Hills/Taconic Corr. Facilities
Bedford Hills, NY
1,1001 of 10.5 ppb
(0.5 ppb)
5Pine Ridge
Zionsville, IN
952 of 50.38 ppb
(0 to 1 ppb)
6Berrymans Branch Mobile HM P
Vineland, NJ
5501 of 40.22 ppb
(0 to 0.89 ppb)
7Wild Oaks Water Company
Rockport, NY
8051 of 30.17 ppb
(0 to 0.5 ppb)
8Hoosick Falls (V) Pws
Hoosick Falls, NY
4,0001 of 150.16 ppb
(0 to 2.4 ppb)
9Fluvanna Correctional Center For Women
Troy, VA
1,6501 of 50.14 ppb
(0 to 0.7 ppb)
10Malaga Villa Apartments
Malaga, NJ
1001 of 40.13 ppb
(0 to 0.53 ppb)

Health Based Limits for m-Dichlorobenzene

StandardDescriptionLevel
EPA Human Health Water Quality CriteriaWater quality criteria set by the US EPA provide guidance for states and tribes authorized to establish water quality standards under the Clean Water Act (CWA) to protect human health. These are non-enforceable standards based upon exposure by both drinking water and the contribution of water contamination to other consumed foods. Source: U.S. Environmental Protection Agency.320 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.600 ppb
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.600 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.3000 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.9000 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.9000 ppb

Testing Summary for m-Dichlorobenzene

Are tests routinely required for m-Dichlorobenzene by federal law?No
Water suppliers reporting tests for m-Dichlorobenzene (2004-2009):21,039 of 47,576
Average testing rate for water supplier reporting tests (2004-2009):0.6 per year

Occupational hazards

Type of concern: Reference:
Allowed workplace exposures restricted to low doses European Union - Classification & Labelling

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®- Mutagenesis 1987
One or more in vitro tests non-mammalian cells show positive mutation results RTECS®- National Technical Information Service 8973
Cancer - not classifiable/not likely to be human carcinogen Int'l Agency for Research on Cancer (IARC) - Carcinogens

Organ system toxicity (non-reproductive)

Type of concern: Reference:
Classified as toxic or harmful European Union - Classification & Labelling
Limited evidence of respiratory toxicity New Jersey Department of Health Services
Limited evidence of cardiovascular or blood toxicity New Jersey Department of Health Services
Limited evidence of gastrointestinal or liver toxicity New Jersey Department of Health Services
Limited evidence of kidney toxicity New Jersey Department of Health Services
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

Ecotoxicology

Type of concern: Reference:
Wildlife and environmental toxicity European Union - Classification & Labelling
Wildlife and environmental toxicity EPA Clean Water Act - Priority Pollutants
Not suspected to be an environmental toxin Environment Canada Domestic Substance List

Persistence and bioaccumulation

Type of concern: Reference:
Not suspected to be bioaccumulative Environment Canada Domestic Substance List



Government, industry, academic studies and classifications

government/industry list/academic study appears on list as classification(s)
European Union - Classification & Labelling1,3-DICHLORBENZENE•Harmful
•Harmful if swallowed
•Dangerous for the environment
•Toxic to aquatic organisms
EPA Clean Water Act - Priority Pollutants1,3-DICHLOROBENZENE•Priority water pollutant under the Clean Water Act
Environment Canada Domestic Substance ListBENZENE, 1,3-DICHLORO-•This chemical was NOT flagged by CEPA for further attention. The chemical was flagged for suspected persistence.
EPA Integrated Risk Information System (IRIS)1,3-DICHLOROBENZENE•Group D: Not classifiable as to human carcinogenicity (EPA classification)
Int'l Agency for Research on Cancer (IARC) - CarcinogensMETA-DICHLOROBENZENE•IARC Group 3 (no cancer link)
EPA Toxic Release Inventory PBTs1,3DICHLOROBENZENE•Toxic, U.S. Environmental Protection Agency Toxics Release Inventory programs
New Jersey Department of Health Services1,3-DICHLOROBENZENE•Respiratory toxicity hazards: suspected
New Jersey Department of Health Services1,3-DICHLOROBENZENE•Cardiovascular or blood toxicity hazards: suspected
New Jersey Department of Health Services1,3-DICHLOROBENZENE•Gastrointestinal or liver toxicity hazards: suspected
New Jersey Department of Health Services1,3-DICHLOROBENZENE•Kidney toxicity hazards: suspected
RTECS®- Mutagenesis 19871,3-DICHLORBENZENE• mutagenic - Positive mutation assay: Micronucleus test (mouse ipr)
RTECS®- National Technical Information Service 89731,3-DICHLORBENZENE• mutagenic - Positive mutation assay: Gene Conversion and Mitotic Recombination (Saccharomyces cerevisiae )



references

government/industry list/academic study reference
European Union - Classification & LabellingCPS&Q (Consumer Products Safety & Quality) formely known as ECB (European Chemicals Bureau). 2008. Classification and Labelling: Chemicals: Annex VI of Directive 67/548/EEC through the 31st ATP.
EPA Clean Water Act - Priority Pollutants
Environment Canada Domestic Substance ListEC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
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.
Int'l Agency for Research on Cancer (IARC) - CarcinogensIARC (International Agency for Research on Cancer). 2008. Overall Evaluations of Carcinogenicity to Humans, as evaluated in IARC Monographs Volumes 1-99 (a total of 935 agents, mixtures and exposures).
EPA Toxic Release Inventory PBTsEPA (U.S. Environmental Protection Agency). 1999. Toxics Release Inventory Program. PBT Chemical Rule.
Scorecard.org Toxicity InformationNew Jersey Department of Health Services. Right to Know Program, NJDOH, Trenton, NJ. http://www.state.nj.us/health/eoh/rtkweb/rtkhsfs.htm
Scorecard.org Toxicity InformationNew Jersey Department of Health Services. Right to Know Program, NJDOH, Trenton, NJ. http://www.state.nj.us/health/eoh/rtkweb/rtkhsfs.htm
Scorecard.org Toxicity InformationNew Jersey Department of Health Services. Right to Know Program, NJDOH, Trenton, NJ. http://www.state.nj.us/health/eoh/rtkweb/rtkhsfs.htm
Scorecard.org Toxicity InformationNew Jersey Department of Health Services. Right to Know Program, NJDOH, Trenton, NJ. http://www.state.nj.us/health/eoh/rtkweb/rtkhsfs.htm
RTECS®- Mutagenesis 1987RTECS®- Mutagenesis. (Oxford Univ. Press, Pinkhill House, Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 2,111,1987
RTECS®- National Technical Information Service 8973RTECS®- National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. PB84-138973

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