Know Your Environment. Protect Your Health.

Dichloroacetic acid

Garden Heights 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)

8

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.03 ppb440.550 ppb - 1.50 ppb
2019ND40ND
20201.40 ppb21ND - 2.80 ppb
2021ND20ND
20220.645 ppb220.640 ppb - 0.650 ppb
20230.800 ppb21ND - 1.60 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
2018-06-01353960220010.550 ppb
2018-06-01353960220021.50 ppb
2018-06-01353960220010.550 ppb
2018-06-01353960220021.50 ppb
2019-06-0735474274001ND
2019-06-0735474274002ND
2019-06-0735474274001ND
2019-06-0735474274002ND
2020-06-2535559374001ND
2020-06-25355593740022.80 ppb
2021-06-2435643279001ND
2021-06-2435643279002ND
2022-06-09357238930010.640 ppb
2022-06-09357238930020.650 ppb
2023-06-0135803797001ND
2023-06-01358037970021.60 ppb