Know Your Environment. Protect Your Health.

Dichloroacetic acid

Medway Water and Sewer Department

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

23

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.43 ppb1611ND - 3.80 ppb
20191.44 ppb1610ND - 3.50 ppb
20200.520 ppb21ND - 1.04 ppb
2021ND20ND
2022N/A00N/A
20230.970 ppb110.970 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 Result
2018-02-123.80 ppb
2018-02-121.30 ppb
2018-02-122.20 ppb
2018-02-122.10 ppb
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-05-08ND
2018-08-071.10 ppb
2018-08-071.10 ppb
2018-08-071.10 ppb
2018-08-07ND
2018-11-051.40 ppb
2018-11-053.20 ppb
2018-11-052.50 ppb
2018-11-053.10 ppb
2019-02-123.50 ppb
2019-02-122.80 ppb
2019-02-121.90 ppb
2019-02-123.10 ppb
2019-05-071.50 ppb
2019-05-071.80 ppb
2019-05-071.80 ppb
2019-05-072.30 ppb
2019-08-12ND
2019-08-121.40 ppb
2019-08-123.00 ppb
2019-08-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2019-11-12ND
2020-08-12ND
2020-08-121.04 ppb
2021-08-11ND
2021-08-11ND
2023-08-280.970 ppb