Know Your Environment. Protect Your Health.

Trichloroacetic acid

Rosemount

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.

 

40

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.750 ppb21ND - 1.50 ppb
2019ND20ND
2020ND20ND
20210.275 ppb163ND - 1.80 ppb
20220.500 ppb62ND - 1.70 ppb
20230.117 ppb121ND - 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
2018-08-0618H0432-021.50 ppb
2018-09-1018I0341-01ND
2019-08-0619H0452-02ND
2019-08-0619H0452-01ND
2020-11-0920K0398-01ND
2020-11-0920K0398-02ND
2021-02-1121B0697-01ND
2021-02-1121B0697-02ND
2021-02-1121B0697-031.30 ppb
2021-02-1121B0697-04ND
2021-04-1321D0602-02ND
2021-04-1321D0602-04ND
2021-04-1321D0602-031.30 ppb
2021-04-1321D0602-01ND
2021-07-2721G1774-01ND
2021-07-2721G1774-02ND
2021-07-2721G1774-03ND
2021-07-2721G1774-04ND
2021-10-1321J0551-04ND
2021-10-1321J0551-031.80 ppb
2021-10-1321J0551-01ND
2021-10-1321J0551-02ND
2022-07-2822G1990-01ND
2022-07-2822G1990-021.70 ppb
2022-10-1822J0663-01ND
2022-10-1822J0663-02ND
2022-10-1822J0663-031.30 ppb
2022-10-1822J0663-04ND
2023-01-2523A0819-03ND
2023-01-2523A0819-04ND
2023-01-2523A0819-02ND
2023-01-2523A0819-01ND
2023-04-1923D1041-01ND
2023-04-1923D1041-02ND
2023-04-1923D1041-03ND
2023-04-1923D1041-04ND
2023-07-1923G1112-01ND
2023-07-1923G1112-02ND
2023-07-1923G1112-031.40 ppb
2023-07-1923G1112-04ND