Know Your Environment. Protect Your Health.

Trichloroacetic acid

Wallace, Town of

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201823.5 ppb2218.0 ppb - 29.0 ppb
20198.50 ppb21ND - 17.0 ppb
20201.50 ppb221.000 ppb - 2.00 ppb
202115.0 ppb2214.0 ppb - 16.0 ppb
20228.50 ppb42ND - 19.0 ppb
2023ND20ND

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
2018-10-2437729_18-4425718.0 ppb
2018-10-2437729_18-4426029.0 ppb
2019-10-0437729_19-4305617.0 ppb
2019-10-0437729_19-43058ND
2020-09-3037729_20-427302.00 ppb
2020-09-3037729_20-427311.000 ppb
2021-09-2337729_21-4206116.0 ppb
2021-09-2337729_21-4206314.0 ppb
2022-06-0837729_22-25683ND
2022-06-0837729_22-2568515.0 ppb
2022-09-1937729_22-45426ND
2022-09-1937729_22-4542719.0 ppb
2023-09-2937729_23-55328ND
2023-09-2937729_23-55329ND