Know Your Environment. Protect Your Health.

Trichloroacetic acid

Clay Water Supply Corporation

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND30ND
20190.250 ppb41ND - 1.000 ppb
20200.300 ppb41ND - 1.20 ppb
20210.425 ppb41ND - 1.70 ppb
20220.300 ppb41ND - 1.20 ppb
2023ND40ND

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
2018-06-19AE30426ND
2018-08-22AE38111ND
2018-11-19AE46398ND
2019-02-12AE54046ND
2019-06-19AE71281ND
2019-08-15AE78829ND
2019-11-13AE890901.000 ppb
2020-02-27AF00226ND
2020-05-20AF119801.20 ppb
2020-08-17AF23678ND
2020-11-17AF34742ND
2021-03-09AF459471.70 ppb
2021-06-01AF56043ND
2021-08-04AF64631ND
2021-10-25AF74523ND
2022-03-16AF89340ND
2022-04-28AF948101.20 ppb
2022-09-06AG11598ND
2022-11-17AG19214ND
2023-03-07AG31746ND
2023-06-19AG44823ND
2023-08-30AG54653ND
2023-11-15AG63730ND