Know Your Environment. Protect Your Health.

Dichloroacetic acid

Village of Simpson 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)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.570 ppb440.540 ppb - 0.600 ppb
20190.780 ppb440.760 ppb - 0.800 ppb
2020ND20ND
2021ND20ND
2022ND20ND
20230.895 ppb220.880 ppb - 0.910 ppb

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
2018-08-07354095610010.600 ppb
2018-08-07354095610020.540 ppb
2018-08-07354095610010.600 ppb
2018-08-07354095610020.540 ppb
2019-08-07354884050010.760 ppb
2019-08-07354884050020.800 ppb
2019-08-07354884050010.760 ppb
2019-08-07354884050020.800 ppb
2020-08-1835571799001ND
2020-08-1835571799002ND
2021-08-1835656862001ND
2021-08-1835656862002ND
2022-08-0335736639001ND
2022-08-0335736639002ND
2023-08-02358177170010.880 ppb
2023-08-02358177170020.910 ppb