Know Your Environment. Protect Your Health.

Dichloroacetic acid

C R C 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.

 

36

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.25 ppb43ND - 2.00 ppb
20191.28 ppb441.000 ppb - 2.00 ppb
20201.85 ppb441.20 ppb - 2.20 ppb
20211.13 ppb86ND - 1.80 ppb
20220.825 ppb86ND - 1.30 ppb
20230.325 ppb82ND - 1.60 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
2018-02-23Q1807773001ND
2018-05-25Q18212780012.00 ppb
2018-09-11Q18358810011.000 ppb
2018-12-13Q18514830012.00 ppb
2019-03-13Q19106240101.10 ppb
2019-06-25Q19394560012.00 ppb
2019-09-11Q19645780011.000 ppb
2019-12-11Q19797800011.000 ppb
2020-03-18Q20119010011.20 ppb
2020-06-23Q20250890012.20 ppb
2020-09-16Q20370840012.00 ppb
2020-12-08Q20491210012.00 ppb
2021-03-11Q21064780111.40 ppb
2021-03-11Q21064780121.20 ppb
2021-06-17Q2115929001ND
2021-06-17Q2115929002ND
2021-09-15Q21253950011.80 ppb
2021-09-15Q21253950021.30 ppb
2021-12-15Q21355190011.70 ppb
2021-12-15Q21355190021.60 ppb
2022-03-24Q22094810011.000 ppb
2022-03-24Q22094810021.30 ppb
2022-06-20Q22169430161.000 ppb
2022-06-20Q22169430171.10 ppb
2022-09-19Q22279350011.10 ppb
2022-09-19Q22279350021.10 ppb
2022-12-08Q2236989002ND
2022-12-08Q2236989001ND
2023-02-28Q2307934001ND
2023-02-28Q2307934002ND
2023-05-11Q2318005009ND
2023-05-11Q2318005010ND
2023-09-20Q23408320011.60 ppb
2023-09-20Q23408320021.000 ppb
2023-12-01Q2351359001ND
2023-12-01Q2351359002ND