Know Your Environment. Protect Your Health.

Dichloroacetic acid

Ventura County Waterworks District No. 17 - Bell Canyon

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

10

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.000 ppb21ND - 2.00 ppb
2019ND20ND
2020ND20ND
2021ND20ND
20221.17 ppb64ND - 2.00 ppb
20231.50 ppb85ND - 4.00 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
2018-02-05CA5610003_DST_002-201802051149ND
2018-02-05CA5610003_DST_003-2018020511352.00 ppb
2019-02-05CA5610003_DST_003-201902051135ND
2019-02-05CA5610003_DST_002-201902051150ND
2020-02-06CA5610003_DST_003-202002061122ND
2020-02-06CA5610003_DST_002-202002061136ND
2021-02-03CA5610003_DST_002-202102030950ND
2021-02-03CA5610003_DST_003-202102031005ND
2022-02-01CA5610003_DST_003-2022020110562.00 ppb
2022-02-01CA5610003_DST_002-202202011033ND
2022-08-23CA5610003_DST_002-2022082314171.000 ppb
2022-08-23CA5610003_DST_003-202208231424ND
2022-11-01CA5610003_DST_002-2022110110102.00 ppb
2022-11-01CA5610003_DST_003-2022110110452.00 ppb
2023-02-08CA5610003_DST_002-202302080900ND
2023-02-08CA5610003_DST_003-2023020809252.00 ppb
2023-05-02CA5610003_DST_002-202305021025ND
2023-05-02CA5610003_DST_003-2023050210502.00 ppb
2023-08-08CA5610003_DST_002-202308081030ND
2023-08-08CA5610003_DST_003-2023080810153.00 ppb
2023-11-02CA5610003_DST_002-2023110210301.000 ppb
2023-11-02CA5610003_DST_003-2023110210454.00 ppb