Know Your Environment. Protect Your Health.

Trichloroacetic acid

East Wenatchee Water District

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.648 ppb42ND - 1.59 ppb
2019ND40ND
2020N/A00N/A
20210.217 ppb61ND - 1.30 ppb
2022ND20ND
20230.520 ppb42ND - 1.05 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
2018-08-29ND
2018-08-29ND
2018-08-291.59 ppb
2018-08-291.000 ppb
2019-08-06ND
2019-08-06ND
2019-08-06ND
2019-08-06ND
2021-06-234145152ND
2021-06-244145153ND
2021-12-064216583ND
2021-12-064216584ND
2021-12-0642165851.30 ppb
2021-12-074216586ND
2023-06-054581708ND
2023-06-0545817101.03 ppb
2023-06-124581714ND
2023-06-1245817121.05 ppb