Know Your Environment. Protect Your Health.

Trichloroacetic acid

Tbcd West Treatment Plant

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)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.36 ppb86ND - 5.90 ppb
20190.738 ppb82ND - 4.30 ppb
20200.675 ppb84ND - 1.60 ppb
20210.600 ppb84ND - 1.50 ppb
20221.45 ppb85ND - 4.00 ppb
20231.99 ppb87ND - 3.00 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
2018-01-23AE09845ND
2018-01-23AE09843ND
2018-04-10AE218725.90 ppb
2018-04-10AE218695.80 ppb
2018-08-01AE352411.90 ppb
2018-08-01AE352422.30 ppb
2018-10-22AE440981.40 ppb
2018-10-22AE440991.60 ppb
2019-01-30AE521884.30 ppb
2019-01-30AE521891.60 ppb
2019-05-30AE68566ND
2019-05-30AE68579ND
2019-08-05AE76990ND
2019-08-05AE76989ND
2019-11-05AE88435ND
2019-11-05AE88438ND
2020-01-14AE934151.20 ppb
2020-01-14AE934181.20 ppb
2020-04-07AF058431.40 ppb
2020-04-07AF058461.60 ppb
2020-09-24AF28410ND
2020-09-24AF28412ND
2020-11-16AF34555ND
2020-11-16AF34565ND
2021-03-23AF478391.20 ppb
2021-03-23AF47840ND
2021-04-13AF500851.000 ppb
2021-04-13AF500881.50 ppb
2021-07-06AF60923ND
2021-07-06AF60927ND
2021-10-06AF72405ND
2021-10-06AF724061.10 ppb
2022-03-22AF899921.50 ppb
2022-03-22AF899931.40 ppb
2022-04-07AF92411ND
2022-04-07AF92414ND
2022-08-09AG085371.000 ppb
2022-08-09AG08544ND
2022-11-22AG196173.70 ppb
2022-11-22AG196214.00 ppb
2023-01-26AG264442.80 ppb
2023-01-26AG264451.10 ppb
2023-04-18AG370512.30 ppb
2023-04-18AG370522.30 ppb
2023-08-24AG539763.00 ppb
2023-08-24AG539791.80 ppb
2023-10-03AG58236ND
2023-10-03AG582392.60 ppb