Know Your Environment. Protect Your Health.

Trichloroacetic acid

Town of Sunset 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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND20ND
2021ND20ND
20220.905 ppb220.710 ppb - 1.10 ppb
2023ND20ND

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
2018-05-1835393236001ND
2018-05-1835393236002ND
2018-05-1835393236001ND
2018-05-1835393236002ND
2019-05-2335470947001ND
2019-05-2335470947002ND
2019-05-2335470947001ND
2019-05-2335470947002ND
2020-05-0835548861001ND
2020-05-0835548861002ND
2021-05-0635631397001ND
2021-05-0635631397002ND
2022-05-17357192160011.10 ppb
2022-05-17357192160020.710 ppb
2023-05-0535797737001ND
2023-05-0535797737002ND