Know Your Environment. Protect Your Health.

Trichloroacetic acid

Batts-lapile Water Association

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
20180.813 ppb84ND - 1.70 ppb
20192.38 ppb881.50 ppb - 5.00 ppb
20200.538 ppb84ND - 1.20 ppb
20210.150 ppb81ND - 1.20 ppb
20220.976 ppb84ND - 2.99 ppb
20231.27 ppb85ND - 2.68 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
2018-03-1218073002101ND
2018-03-1218073002001ND
2018-06-1118165004501ND
2018-06-1118165004601ND
2018-09-11182560038011.60 ppb
2018-09-11182560039011.50 ppb
2018-12-03183400041011.70 ppb
2018-12-03183400042011.70 ppb
2019-03-12190730021012.00 ppb
2019-03-12190730022012.10 ppb
2019-06-17191710060012.40 ppb
2019-06-17191710059012.30 ppb
2019-09-09192540024012.20 ppb
2019-09-09192540025015.00 ppb
2019-12-03193390009011.50 ppb
2019-12-03193390010011.50 ppb
2020-03-02200640013011.000 ppb
2020-03-02200640014011.000 ppb
2020-06-29201830022011.20 ppb
2020-06-29201830021011.10 ppb
2020-09-0720254001001ND
2020-09-0720254000901ND
2020-11-3020338002701ND
2020-11-3020338002601ND
2021-03-3121091001501ND
2021-03-3121091001401ND
2021-06-0821161004201ND
2021-06-0821161004301ND
2021-09-0821252002101ND
2021-09-08212520022011.20 ppb
2021-12-0721342003601ND
2021-12-0721342003501ND
2022-03-02O195924-HAA-1ND
2022-03-02O195925-HAA-1ND
2022-06-07O198867-HAA-11.31 ppb
2022-06-07O198866-HAA-11.01 ppb
2022-09-27O202227-HAA-12.50 ppb
2022-09-27O202228-HAA-12.99 ppb
2022-12-06O204285-HAA-1ND
2022-12-06O204284-HAA-1ND
2023-03-07O206928-HAA-12.52 ppb
2023-03-07O206927-HAA-1ND
2023-06-14O210002-HAA-1ND
2023-06-14O210001-HAA-1ND
2023-09-06O211829-HAA-11.20 ppb
2023-09-06O211828-HAA-11.14 ppb
2023-12-05O214317-HAA-12.68 ppb
2023-12-05O214316-HAA-12.59 ppb