Know Your Environment. Protect Your Health.

Dichloroacetic acid

Nash Forreston 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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

16

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.35 ppb442.50 ppb - 6.90 ppb
2019ND40ND
2020ND50ND
20210.250 ppb41ND - 1.000 ppb
20223.10 ppb53ND - 12.3 ppb
202310.7 ppb882.90 ppb - 18.0 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
2018-01-24Q18027430183.30 ppb
2018-04-25Q18168450014.70 ppb
2018-08-27Q18341750016.90 ppb
2018-12-03Q18489430012.50 ppb
2019-02-27Q1908359001ND
2019-06-19Q1938628001ND
2019-09-27Q1969839001ND
2019-11-19Q1977640001ND
2020-03-05Q2008357009ND
2020-06-03Q2022021001ND
2020-09-08Q2035414001ND
2020-10-13Q2039945001ND
2020-12-07Q2048611001ND
2021-02-25Q21049880021.000 ppb
2021-05-05Q2111584017ND
2021-08-24Q2123003001ND
2021-11-10Q2131605001ND
2022-01-18Q2201589009ND
2022-06-22Q2217441001ND
2022-08-04Q222236900112.3 ppb
2022-12-01Q22359230011.60 ppb
2022-12-01Q22359230021.60 ppb
2023-02-28Q23080150092.90 ppb
2023-02-28Q23080150103.20 ppb
2023-06-07Q232144400111.5 ppb
2023-06-07Q232144400211.8 ppb
2023-09-13Q233940500110.1 ppb
2023-09-13Q233940500210.3 ppb
2023-11-07Q234813700118.0 ppb
2023-11-07Q234813700217.7 ppb