Know Your Environment. Protect Your Health.

Dichloroacetic acid

Chatfield 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.

 

48

Samples

0

Samples exceeding legal limit (MCL)

36

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.78 ppb87ND - 11.9 ppb
20191.76 ppb86ND - 3.50 ppb
20204.39 ppb87ND - 15.0 ppb
20219.35 ppb87ND - 19.5 ppb
202210.4 ppb85ND - 47.1 ppb
20233.05 ppb84ND - 12.1 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
2018-02-08Q18053720022.10 ppb
2018-02-08Q18053720014.60 ppb
2018-04-19Q18161160034.80 ppb
2018-04-19Q18161160022.40 ppb
2018-07-19Q182879500111.9 ppb
2018-07-19Q18287950021.40 ppb
2018-10-25Q18427770013.00 ppb
2018-10-25Q1842777002ND
2019-02-26Q19083630023.50 ppb
2019-02-26Q1908363003ND
2019-05-15Q19253700012.30 ppb
2019-05-15Q1925370002ND
2019-07-31Q19494000022.00 ppb
2019-07-31Q19494000011.40 ppb
2019-10-17Q19729930013.50 ppb
2019-10-17Q19729930021.40 ppb
2020-01-29Q20035540018.70 ppb
2020-01-29Q20035540021.50 ppb
2020-04-14Q20147020021.60 ppb
2020-04-14Q20147020031.30 ppb
2020-08-04Q20303680016.00 ppb
2020-08-04Q20303680021.000 ppb
2020-10-20Q204106000115.0 ppb
2020-10-20Q2041060002ND
2021-01-21Q21015260015.20 ppb
2021-01-21Q21015260021.000 ppb
2021-04-05Q210846200116.0 ppb
2021-04-05Q210846200214.8 ppb
2021-07-14Q211845400119.5 ppb
2021-07-14Q21184540021.90 ppb
2021-10-04Q212718900116.4 ppb
2021-10-04Q2127189002ND
2022-03-15Q220889900121.9 ppb
2022-03-15Q2208899002ND
2022-05-03Q221345900110.3 ppb
2022-05-03Q2213459002ND
2022-08-17Q222434800147.1 ppb
2022-08-17Q22243480021.10 ppb
2022-11-09Q22338720022.60 ppb
2022-11-09Q2233872003ND
2023-01-26Q23037620018.70 ppb
2023-01-26Q2303762002ND
2023-05-02Q231648200112.1 ppb
2023-05-02Q2316482002ND
2023-07-31Q23308420021.70 ppb
2023-07-31Q2330842003ND
2023-10-04Q23427090011.90 ppb
2023-10-04Q2342709002ND