Know Your Environment. Protect Your Health.

Dichloroacetic acid

Arrowhead Beach Co-op Water Association

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.650 ppb41ND - 2.60 ppb
2019ND20ND
2020N/A00N/A
2021ND30ND
20220.250 ppb41ND - 1.000 ppb
20231.08 ppb54ND - 1.40 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
2018-03-31ND
2018-05-22ND
2018-08-142.60 ppb
2018-11-14ND
2019-01-29ND
2019-04-03ND
2021-05-274120269ND
2021-08-204163691ND
2021-11-104210578ND
2022-03-234267558ND
2022-06-294307831ND
2022-09-284356999ND
2022-10-3143700101.000 ppb
2023-03-2744372721.30 ppb
2023-06-2744833701.40 ppb
2023-08-2345127341.40 ppb
2023-09-274532563ND
2023-11-2745617761.30 ppb