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National Drinking Water Database


Chloroform in New York


Chloroform is a disinfection byproduct from the trihalomethane (THM) family, and is formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water. [read more]

The Most Polluted Communities in New York

1,612 water utilities reported detecting Chloroform in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Chloroform level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Amsterdam (T)
Amsterdam, NY
30018 of 18151.22 ppb
(100 to 204 ppb)
2Jutkofsky Mhp
Hudson, NY
751 of 1142 ppb
(142 ppb)
3Winebrook Hills Wd
Newcomb, NY
10022 of 22128.01 ppb
(45 to 230 ppb)
4Springhouse Estates W.W. Corp.
Brewster, NY
21218 of 18103.56 ppb
(36 to 210 ppb)
5Florida (T) Water District
NY
3759 of 9103.23 ppb
(31.1 to 149 ppb)
6Manchester WD #3
Clifton Springs, NY
1441 of 1102 ppb
(102 ppb)
7East Herkimer Water District
Herkimer, NY
1,0241 of 198.7 ppb
(98.7 ppb)
8Bovina Center Water Dist. NO 1
Bovina Center, NY
14211 of 1197.28 ppb
(39.6 to 146 ppb)
9Leicester - Cuylerville Wd
Leicester, NY
3302 of 295.1 ppb
(94 to 96.2 ppb)
10Mount Morris Town Pws
Mount Morris, NY
2341 of 194 ppb
(94 ppb)

Health Based Limits for Chloroform

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.5.7 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.35 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.70 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.70 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.80 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.4000 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.4000 ppb

Violation Summary for Chloroform in New York

There are no violations reported for this contaminant in New York