Know Your Environment. Protect Your Health.

Trichloroacetic acid

City of Hammond Water System

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
20190.315 ppb42ND - 0.630 ppb
20200.370 ppb21ND - 0.740 ppb
2021ND20ND
2022ND20ND
20231.22 ppb220.940 ppb - 1.50 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
2018-05-0335390314001ND
2018-05-0335390314002ND
2018-05-0335390314001ND
2018-05-0335390314002ND
2019-05-15354693820010.630 ppb
2019-05-1535469382002ND
2019-05-15354693820010.630 ppb
2019-05-1535469382002ND
2020-05-08355488330010.740 ppb
2020-05-0835548833002ND
2021-05-1435633871001ND
2021-05-1435633871002ND
2022-05-0935716269001ND
2022-05-0935716269002ND
2023-05-05357977840010.940 ppb
2023-05-05357977840021.50 ppb