Know Your Environment. Protect Your Health.

Dichloroacetic acid

Concan Water Supply Corporation

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.13 ppb43ND - 2.50 ppb
2019ND40ND
20200.675 ppb42ND - 1.70 ppb
20211.35 ppb42ND - 2.90 ppb
20221.15 ppb42ND - 3.20 ppb
20231.95 ppb43ND - 5.20 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
2018-01-25AE10539ND
2018-04-16AE225011.000 ppb
2018-08-09AE363461.000 ppb
2018-12-13AE488282.50 ppb
2019-02-28AE56555ND
2019-05-14AE66201ND
2019-08-26AE80595ND
2019-10-22AE87229ND
2020-02-20AE992701.000 ppb
2020-06-24AF16771ND
2020-08-12AF231851.70 ppb
2020-11-23AF35491ND
2021-02-04AF42683ND
2021-05-19AF545902.50 ppb
2021-09-22AF708032.90 ppb
2021-12-22AF79266ND
2022-03-08AF88036ND
2022-06-08AF999981.40 ppb
2022-08-16AG094443.20 ppb
2022-12-27AG22848ND
2023-02-24AG30427ND
2023-06-08AG437555.20 ppb
2023-08-24AG540021.20 ppb
2023-11-06AG623771.40 ppb