Know Your Environment. Protect Your Health.

Trichloroacetic acid

Dixie Overland 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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201811.2 ppb42ND - 22.4 ppb
20190.350 ppb42ND - 0.700 ppb
20200.430 ppb21ND - 0.860 ppb
2021ND20ND
2022ND20ND
20231.09 ppb330.930 ppb - 1.40 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
2018-08-0735410655001ND
2018-08-073541065500222.4 ppb
2018-08-0735410655001ND
2018-08-073541065500222.4 ppb
2019-08-15354911770020.700 ppb
2019-08-1535491177001ND
2019-08-15354911770020.700 ppb
2019-08-1535491177001ND
2020-08-2235573090001ND
2020-08-22355730900020.860 ppb
2021-08-1735657776001ND
2021-08-1735657776002ND
2022-08-2535742991001ND
2022-08-2535742991002ND
2023-08-15358222940021.40 ppb
2023-08-25358235090010.930 ppb
2023-08-25358235090020.930 ppb