Know Your Environment. Protect Your Health.

Trichloroacetic acid

Barton Creek 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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.10 ppb43ND - 2.10 ppb
20191.33 ppb42ND - 4.00 ppb
20201.28 ppb41ND - 5.10 ppb
20210.250 ppb41ND - 1.000 ppb
2022ND40ND
20230.800 ppb41ND - 3.20 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
2018-02-15AE140461.20 ppb
2018-05-14AE261031.10 ppb
2018-08-13AE36616ND
2018-11-19AE464122.10 ppb
2019-02-14AE545594.00 ppb
2019-05-28AE682141.30 ppb
2019-08-20AE79544ND
2019-11-25AE90371ND
2020-03-03AF00831ND
2020-04-20AF07142ND
2020-07-23AF20313ND
2020-10-19AF310735.10 ppb
2021-01-25AF40694ND
2021-04-06AF49078ND
2021-07-07AF609361.000 ppb
2021-10-21AF74308ND
2022-02-10AF84213ND
2022-04-28AF94814ND
2022-08-17AG09645ND
2022-10-19AG17600ND
2023-02-14AG28814ND
2023-04-11AG36211ND
2023-07-18AG49004ND
2023-10-11AG594193.20 ppb