Know Your Environment. Protect Your Health.

Trichloroacetic acid

St Tam Parish - Briarwood Terrace

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)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.245 ppb42ND - 0.490 ppb
20190.525 ppb440.510 ppb - 0.540 ppb
20200.575 ppb220.350 ppb - 0.800 ppb
20210.455 ppb220.420 ppb - 0.490 ppb
20220.355 ppb21ND - 0.710 ppb
20230.655 ppb220.530 ppb - 0.780 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
2018-02-1635374865001ND
2018-02-1635374865001ND
2018-11-05354288020010.490 ppb
2018-11-05354288020010.490 ppb
2019-02-21354500300010.540 ppb
2019-02-21354500300010.540 ppb
2019-11-01355091370010.510 ppb
2019-11-01355091370010.510 ppb
2020-02-14355314580010.350 ppb
2020-11-06355905120010.800 ppb
2021-02-05356100120010.420 ppb
2021-11-05356763180010.490 ppb
2022-02-11356965830010.710 ppb
2022-11-0435758179001ND
2023-02-03357769910010.530 ppb
2023-11-03358392840010.780 ppb