Know Your Environment. Protect Your Health.

Dichloroacetic acid

San Lucas Water District

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020ND10ND
2021ND10ND
20221.50 ppb21ND - 3.00 ppb
20232.08 ppb442.00 ppb - 2.30 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
2020-08-11CA2701676_DST_800-202008110935ND
2021-10-08CA2701676_DST_800-202110081120ND
2022-08-26CA2701676_DST_800-2022082611153.00 ppb
2022-10-07CA2701676_DST_800-202210071045ND
2023-01-19CA2701676_DST_800-2023011909002.00 ppb
2023-04-13CA2701676_DST_800-2023041310202.00 ppb
2023-08-03CA2701676_DST_800-2023080311152.30 ppb
2023-11-15CA2701676_DST_800-2023111508502.00 ppb