Know Your Environment. Protect Your Health.

Trichloroacetic acid

Fort Johnson South Water System

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)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.810 ppb440.800 ppb - 0.820 ppb
20190.355 ppb440.280 ppb - 0.430 ppb
2020ND20ND
20210.370 ppb65ND - 0.500 ppb
20220.434 ppb1610ND - 1.000 ppb
20230.240 ppb166ND - 0.790 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
2018-07-25354073050010.800 ppb
2018-07-25354073050020.820 ppb
2018-07-25354073050010.800 ppb
2018-07-25354073050020.820 ppb
2019-07-25354851950020.280 ppb
2019-07-25354851950010.430 ppb
2019-07-25354851950020.280 ppb
2019-07-25354851950010.430 ppb
2020-07-2235565518001ND
2020-07-2235565518002ND
2021-07-08356461220010.440 ppb
2021-07-08356461220020.500 ppb
2021-10-25356739780040.380 ppb
2021-10-25356739780010.460 ppb
2021-10-25356739780020.440 ppb
2021-10-2535673978003ND
2022-01-19356919350010.620 ppb
2022-01-19356919350040.600 ppb
2022-01-19356919350030.560 ppb
2022-01-19356919350020.600 ppb
2022-04-2035712728004ND
2022-04-2035712728003ND
2022-04-20357127280020.400 ppb
2022-04-20357127280010.670 ppb
2022-07-07357300770040.880 ppb
2022-07-07357300770030.770 ppb
2022-07-07357300770021.000 ppb
2022-07-07357300770010.840 ppb
2022-10-0335750343001ND
2022-10-0335750343003ND
2022-10-0335750343002ND
2022-10-0335750343004ND
2023-01-0535770746003ND
2023-01-0535770746004ND
2023-01-0535770746002ND
2023-01-05357707460010.310 ppb
2023-04-1235792471004ND
2023-04-12357924710030.640 ppb
2023-04-12357924710020.790 ppb
2023-04-12357924710010.750 ppb
2023-07-0535811228001ND
2023-07-0535811228002ND
2023-07-0535811228003ND
2023-07-0535811228004ND
2023-10-16358356870010.660 ppb
2023-10-16358356870020.690 ppb
2023-10-1635835687003ND
2023-10-1635835687004ND