Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Alto

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)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.66 ppb881.10 ppb - 2.60 ppb
20190.863 ppb84ND - 1.80 ppb
20200.700 ppb83ND - 2.00 ppb
20211.33 ppb84ND - 4.00 ppb
20220.700 ppb83ND - 2.90 ppb
20230.138 ppb81ND - 1.10 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
2018-02-22Q18076340021.10 ppb
2018-02-22Q18076340011.20 ppb
2018-05-29Q18213020101.70 ppb
2018-05-29Q18213020012.00 ppb
2018-08-16Q18329680011.10 ppb
2018-08-16Q18329680021.20 ppb
2018-10-30Q18438790012.40 ppb
2018-10-30Q18438790022.60 ppb
2019-03-20Q19117200041.70 ppb
2019-03-20Q19117200061.80 ppb
2019-05-20Q1927027006ND
2019-05-20Q1927027007ND
2019-09-19Q1968024002ND
2019-09-19Q1968024001ND
2019-12-04Q19791940011.60 ppb
2019-12-04Q19791940021.80 ppb
2020-03-23Q2012154001ND
2020-03-23Q20121540021.60 ppb
2020-05-27Q2021186001ND
2020-05-27Q2021186002ND
2020-08-05Q2031226001ND
2020-08-05Q2031226002ND
2020-10-22Q20411980092.00 ppb
2020-10-22Q20411980102.00 ppb
2021-03-11Q21064640011.50 ppb
2021-03-11Q21064640021.60 ppb
2021-05-11Q2112089001ND
2021-05-11Q2112089002ND
2021-08-09Q21209490013.50 ppb
2021-08-09Q21209490024.00 ppb
2021-10-14Q2128845014ND
2021-10-14Q2128845015ND
2022-03-03Q2207391010ND
2022-03-03Q2207391011ND
2022-05-16Q22144380012.90 ppb
2022-05-16Q2214438002ND
2022-08-04Q22223470011.10 ppb
2022-08-04Q22223470021.60 ppb
2022-10-10Q2230465001ND
2022-10-10Q2230465002ND
2023-01-10Q2301218001ND
2023-01-10Q2301218002ND
2023-04-20Q2314880009ND
2023-04-20Q2314880010ND
2023-07-10Q2326545001ND
2023-07-10Q23265450021.10 ppb
2023-10-24Q2345742001ND
2023-10-24Q2345742002ND