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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

o-Chlorotoluene


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

o-Chlorotoluene is a solvent and a chemical intermediate used in production of pharmaceuticals, pesticides, synthetic rubber and dyes.

 
Detected
Found above
health guidelines
Found above
legal limit
States
9
-
-
Water utilities
18
-
-
People Served
62,693
-
-

Health Concerns for o-Chlorotoluene:


o-Chlorotoluene Exposure by State

Water utilities in 9 states have reported detecting o-Chlorotoluene in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with o-Chlorotoluene contamination
SystemsPopulation
Rhode Island246,105
Massachusetts29,010
Missouri12,779
New York21,905
California31,175
North Carolina51,073
Delaware1500
New Hampshire188
Indiana158
Total1862,693

The Most Polluted Communities

18 water utilities reported detecting o-Chlorotoluene in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average o-Chlorotoluene level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Trail Ridge Condominiums
MA
1041 of 16.55 ppb
(6.55 ppb)
2East 40 Mobile Home Park
New Palestine, IN
581 of 15.4 ppb
(5.4 ppb)
3Los Robles Mobile Home Estates
Paso Robles, CA
4201 of 11.93 ppb
(1.93 ppb)
4Aquarion Water Company: Millbury
Millbury, MA
8,9061 of 31.1 ppb
(0 to 3.3 ppb)
5Rim Rock Water Company
Nipomo, CA
551 of 21 ppb
(0 to 2 ppb)
6Ashebrook Park
Gastonia, NC
2391 of 20.65 ppb
(0 to 1.3 ppb)
7Bedford Hills/Taconic Corr. Facilities
Bedford Hills, NY
1,1001 of 10.5 ppb
(0.5 ppb)
8Alpine Nursing Home
Coventry, RI
1051 of 20.35 ppb
(0 to 0.7 ppb)
9Woonsocket Water Department
Woonsocket, RI
46,0001 of 230.18 ppb
(0 to 4.1 ppb)
10Wild Oaks Water Company
Rockport, NY
8051 of 30.17 ppb
(0 to 0.5 ppb)

Health Based Limits for o-Chlorotoluene

StandardDescriptionLevel
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.100 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.700 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.2000 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.2000 ppb

Testing Summary for o-Chlorotoluene

Are tests routinely required for o-Chlorotoluene by federal law?No
Water suppliers reporting tests for o-Chlorotoluene (2004-2009):20,611 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
Allowed workplace exposures restricted to high doses RTECS®- TLV/BEI,2007

Organ system toxicity (non-reproductive)

Type of concern: Reference:
One or more animal studies show sense organ effects at low doses RTECS®- National Technical Information Service 2387
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
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 & Labelling2-CHLOROTOLUENE; [1] ; 3-CHLOROTOLUENE; [2] ; 4-CHLOROTOLUENE; [3] ; CHLOROTOLUENE [4]•Harmful
•Harmful by inhalation
•Dangerous for the environment
•Toxic to aquatic organisms
Environment Canada Domestic Substance ListBENZENE, 1-CHLORO-2-METHYL-•This chemical was NOT flagged by CEPA for further attention. The chemical was flagged for suspected persistence.
RTECS®- TLV/BEI,2007TOLUENE, O-CHLORO-• occupationally related - ACGIH TLV (human TWA)
RTECS®- National Technical Information Service 2387TOLUENE, O-CHLORO-• sense organ - Primary eye irritant (rabbit )



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.
Environment Canada Domestic Substance ListEC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
RTECS®- TLV/BEI,2007RTECS®- TLV/BEI,2007
RTECS®- National Technical Information Service 2387RTECS®- National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. OTS0572387

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