Know Your Environment. Protect Your Health.

Trichloroacetic acid

Villages of Bocage- Madisonville

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.

 

64

Samples

0

Samples exceeding legal limit (MCL)

27

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.256 ppb168ND - 0.560 ppb
20190.340 ppb1612ND - 0.660 ppb
20200.0763 ppb82ND - 0.310 ppb
2021ND80ND
20220.250 ppb84ND - 0.600 ppb
20231.45 ppb81ND - 11.6 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
2018-02-0235371897001ND
2018-02-0235371897002ND
2018-02-0235371897002ND
2018-02-0235371897001ND
2018-05-03353903220020.560 ppb
2018-05-03353903220010.560 ppb
2018-05-03353903220020.560 ppb
2018-05-03353903220010.560 ppb
2018-08-01354082730010.460 ppb
2018-08-01354082730020.470 ppb
2018-08-01354082730010.460 ppb
2018-08-01354082730020.470 ppb
2018-11-1535432277001ND
2018-11-1535432277001ND
2018-11-1535432277002ND
2018-11-1535432277002ND
2019-02-21354500290010.400 ppb
2019-02-21354500290020.390 ppb
2019-02-21354500290010.400 ppb
2019-02-21354500290020.390 ppb
2019-05-08354682940010.660 ppb
2019-05-08354682940020.640 ppb
2019-05-08354682940010.660 ppb
2019-05-08354682940020.640 ppb
2019-08-07354884540020.310 ppb
2019-08-07354884540010.320 ppb
2019-08-07354884540010.320 ppb
2019-08-07354884540020.310 ppb
2019-11-1535512871001ND
2019-11-1535512871002ND
2019-11-1535512871002ND
2019-11-1535512871001ND
2020-02-07355295090020.300 ppb
2020-02-07355295090010.310 ppb
2020-05-0835548829001ND
2020-05-0835548829002ND
2020-08-1335570704001ND
2020-08-1335570704002ND
2020-11-0635590520001ND
2020-11-0635590520002ND
2021-02-0535610009001ND
2021-02-0535610009002ND
2021-05-0735631657001ND
2021-05-0735631657002ND
2021-08-0635653787001ND
2021-08-0635653787002ND
2021-11-0535676310001ND
2021-11-0535676310002ND
2022-02-11356965850020.440 ppb
2022-02-11356965850010.450 ppb
2022-05-06357159290020.600 ppb
2022-05-06357159290010.510 ppb
2022-08-0335737001009ND
2022-08-0335737001010ND
2022-11-0435758185001ND
2022-11-0435758185002ND
2023-02-0335776978001ND
2023-02-0335776978002ND
2023-05-0535797780001ND
2023-05-0535797780002ND
2023-08-0435818388001ND
2023-08-0435818388002ND
2023-11-0335839347001ND
2023-11-033583934700211.6 ppb