Know Your Environment. Protect Your Health.

Dichloroacetic acid

Ransom, City of

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

13

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.20 ppb111.20 ppb
20190.330 ppb42ND - 1.000 ppb
20201.87 ppb440.880 ppb - 2.40 ppb
20210.548 ppb43ND - 0.760 ppb
20220.590 ppb43ND - 1.10 ppb
2023ND40ND

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
2018-09-2410491381.20 ppb
2019-03-2511396150.320 ppb
2019-06-241191374ND
2019-09-2312469051.000 ppb
2019-12-161291367ND
2020-03-1713425190.880 ppb
2020-06-1614065142.30 ppb
2020-09-2215196282.40 ppb
2020-12-1417119251.90 ppb
2021-04-051812078ND
2021-06-2118655290.730 ppb
2021-11-3020434140.760 ppb
2021-12-1420695140.700 ppb
2022-03-282224200ND
2022-06-2822894380.650 ppb
2022-09-2023629761.10 ppb
2022-12-1224151810.610 ppb
2023-03-202469537ND
2023-06-192520981ND
2023-09-242582380ND
2023-12-182627995ND