Know Your Environment. Protect Your Health.

Trichloroacetic acid

Hilly-greenwood 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)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.750 ppb440.610 ppb - 0.890 ppb
20190.795 ppb440.730 ppb - 0.860 ppb
20200.780 ppb220.700 ppb - 0.860 ppb
20210.605 ppb220.590 ppb - 0.620 ppb
20220.865 ppb220.730 ppb - 1.000 ppb
20230.990 ppb220.880 ppb - 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
2018-06-18353998760010.890 ppb
2018-06-18353998760020.610 ppb
2018-06-18353998760010.890 ppb
2018-06-18353998760020.610 ppb
2019-06-12354755330010.860 ppb
2019-06-12354755330020.730 ppb
2019-06-12354755330010.860 ppb
2019-06-12354755330020.730 ppb
2020-06-04355548480010.860 ppb
2020-06-04355548480020.700 ppb
2021-06-28356438130010.620 ppb
2021-06-28356438130020.590 ppb
2022-06-02357224290011.000 ppb
2022-06-02357224290020.730 ppb
2023-06-14358067650010.880 ppb
2023-06-14358067650021.10 ppb