Know Your Environment. Protect Your Health.

Dichloroacetic acid

City of Deridder Water System

Dichloroacetic 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)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.770 ppb440.760 ppb - 0.780 ppb
20190.270 ppb42ND - 0.540 ppb
2020ND20ND
2021ND20ND
20220.310 ppb21ND - 0.620 ppb
2023ND20ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic 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
2018-08-01354086890010.760 ppb
2018-08-01354086890020.780 ppb
2018-08-01354086890010.760 ppb
2018-08-01354086890020.780 ppb
2019-08-01354870410010.540 ppb
2019-08-0135487041002ND
2019-08-01354870410010.540 ppb
2019-08-0135487041002ND
2020-08-1135570935001ND
2020-08-1135570935002ND
2021-08-2335659643001ND
2021-08-2335659643002ND
2022-08-2535742998001ND
2022-08-25357429980020.620 ppb
2023-08-0735819589001ND
2023-08-0735819589002ND