Know Your Environment. Protect Your Health.

Dichloroacetic acid

California Water Service Company-Lancaster

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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.14 ppb84ND - 25.0 ppb
2019ND80ND
2020ND80ND
20210.313 ppb81ND - 2.50 ppb
2022ND80ND
20232.21 ppb82ND - 9.60 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
2018-02-13CA1910010_DST_801-2018021315493.90 ppb
2018-02-13CA1910010_DST_800-2018021315594.20 ppb
2018-05-15CA1910010_DST_801-20180515145724.0 ppb
2018-05-15CA1910010_DST_800-20180515144225.0 ppb
2018-08-14CA1910010_DST_801-201808141107ND
2018-08-14CA1910010_DST_800-201808141130ND
2018-11-13CA1910010_DST_801-201811131204ND
2018-11-13CA1910010_DST_800-201811131234ND
2019-02-12CA1910010_DST_800-201902121515ND
2019-02-12CA1910010_DST_801-201902121545ND
2019-05-14CA1910010_DST_800-201905141411ND
2019-05-14CA1910010_DST_801-201905141451ND
2019-08-13CA1910010_DST_801-201908131515ND
2019-08-13CA1910010_DST_800-201908131447ND
2019-11-12CA1910010_DST_800-201911121055ND
2019-11-12CA1910010_DST_801-201911121036ND
2020-02-11CA1910010_DST_801-202002110931ND
2020-02-11CA1910010_DST_800-202002110956ND
2020-05-12CA1910010_DST_800-202005121224ND
2020-05-12CA1910010_DST_801-202005121235ND
2020-08-18CA1910010_DST_800-202008181430ND
2020-08-18CA1910010_DST_801-202008181455ND
2020-11-09CA1910010_DST_801-202011091501ND
2020-11-09CA1910010_DST_800-202011091521ND
2021-02-08CA1910010_DST_800-202102081204ND
2021-02-08CA1910010_DST_801-202102081149ND
2021-05-11CA1910010_DST_800-202105111408ND
2021-05-11CA1910010_DST_801-2021051114372.50 ppb
2021-08-10CA1910010_DST_800-202108101430ND
2021-08-10CA1910010_DST_801-202108101501ND
2021-11-08CA1910010_DST_801-202111081036ND
2021-11-08CA1910010_DST_800-202111081145ND
2022-02-15CA1910010_DST_801-202202151421ND
2022-02-15CA1910010_DST_800-202202151405ND
2022-05-10CA1910010_DST_800-202205101326ND
2022-05-10CA1910010_DST_801-202205101419ND
2022-08-09CA1910010_DST_800-202208091537ND
2022-08-09CA1910010_DST_801-202208091518ND
2022-11-15CA1910010_DST_800-202211150953ND
2022-11-15CA1910010_DST_801-202211150931ND
2023-02-14CA1910010_DST_801-202302140927ND
2023-02-14CA1910010_DST_800-202302141033ND
2023-05-09CA1910010_DST_801-2023050914339.60 ppb
2023-05-09CA1910010_DST_800-202305091340ND
2023-08-15CA1910010_DST_801-2023081512138.10 ppb
2023-08-15CA1910010_DST_800-202308151159ND
2023-11-14CA1910010_DST_800-202311141048ND
2023-11-14CA1910010_DST_801-202311141228ND