Know Your Environment. Protect Your Health.

Trichloroacetic acid

Gary Water Supply Corporation

Trichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

48

Samples

0

Samples exceeding legal limit (MCL)

26

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.000 ppb84ND - 2.70 ppb
20191.25 ppb84ND - 3.00 ppb
20200.563 ppb82ND - 2.70 ppb
20211.08 ppb86ND - 2.50 ppb
20221.21 ppb86ND - 1.90 ppb
20230.763 ppb84ND - 2.50 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to reproduction and child development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-02-14Q1806324003ND
2018-02-14Q1806324002ND
2018-05-09Q1818860011ND
2018-05-09Q1818860004ND
2018-08-23Q18339420011.80 ppb
2018-08-23Q18339420022.70 ppb
2018-11-06Q18444000011.40 ppb
2018-11-06Q18444000022.10 ppb
2019-02-05Q1905210001ND
2019-02-05Q1905210002ND
2019-04-30Q19172500012.50 ppb
2019-04-30Q19172500061.80 ppb
2019-08-26Q19592640023.00 ppb
2019-08-26Q19592640012.70 ppb
2019-12-17Q1980329001ND
2019-12-17Q1980329002ND
2020-03-05Q2008346006ND
2020-03-05Q2008346007ND
2020-05-27Q20208340012.70 ppb
2020-05-27Q20208340021.80 ppb
2020-09-01Q2035104001ND
2020-09-01Q2035104002ND
2020-12-02Q2048009001ND
2020-12-02Q2048009002ND
2021-02-24Q21049650011.30 ppb
2021-02-24Q21049650021.20 ppb
2021-04-29Q21109810091.000 ppb
2021-04-29Q2110981011ND
2021-09-22Q2125991001ND
2021-09-22Q21259910022.50 ppb
2021-12-02Q21333190011.40 ppb
2021-12-02Q21333190021.20 ppb
2022-02-01Q2203641004ND
2022-02-01Q22036410051.000 ppb
2022-05-17Q22145310011.60 ppb
2022-05-17Q22145310021.90 ppb
2022-08-22Q22247830011.50 ppb
2022-08-22Q22247830021.90 ppb
2022-11-03Q22333480011.80 ppb
2022-11-03Q2233348002ND
2023-02-16Q23065400011.40 ppb
2023-02-16Q23065400021.10 ppb
2023-05-23Q2319407001ND
2023-05-23Q2319407002ND
2023-08-03Q23316940012.50 ppb
2023-08-03Q23316940021.10 ppb
2023-11-10Q2348392001ND
2023-11-10Q2348392002ND