Know Your Environment. Protect Your Health.

Dichloroacetic acid

Markridge Park Subdivision 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
2018ND40ND
20190.266 ppb440.202 ppb - 0.330 ppb
2020ND20ND
20210.185 ppb21ND - 0.370 ppb
2022ND20ND
20231.15 ppb221.000 ppb - 1.30 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
2018-08-1635412027001ND
2018-08-1635412027002ND
2018-08-1635412027001ND
2018-08-1635412027002ND
2019-08-08354890020010.202 ppb
2019-08-08354890020020.330 ppb
2019-08-08354890020010.202 ppb
2019-08-08354890020020.330 ppb
2020-08-1435570889001ND
2020-08-1435570889002ND
2021-08-0235652760001ND
2021-08-02356527600020.370 ppb
2022-08-2635742977001ND
2022-08-2635742977002ND
2023-08-15358219850011.000 ppb
2023-08-15358219850021.30 ppb