Know Your Environment. Protect Your Health.

Dichloroacetic acid

Fort Johnson South Water System

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)

40

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.85 ppb441.70 ppb - 2.00 ppb
20190.720 ppb440.640 ppb - 0.800 ppb
20200.355 ppb21ND - 0.710 ppb
20210.490 ppb64ND - 0.890 ppb
20220.963 ppb1614ND - 1.90 ppb
20230.588 ppb1613ND - 1.20 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
2018-07-25354073050011.70 ppb
2018-07-25354073050022.00 ppb
2018-07-25354073050011.70 ppb
2018-07-25354073050022.00 ppb
2019-07-25354851950020.640 ppb
2019-07-25354851950010.800 ppb
2019-07-25354851950020.640 ppb
2019-07-25354851950010.800 ppb
2020-07-22355655180010.710 ppb
2020-07-2235565518002ND
2021-07-08356461220010.710 ppb
2021-07-08356461220020.890 ppb
2021-10-2535673978004ND
2021-10-25356739780010.680 ppb
2021-10-25356739780020.660 ppb
2021-10-2535673978003ND
2022-01-19356919350010.930 ppb
2022-01-19356919350040.890 ppb
2022-01-19356919350030.640 ppb
2022-01-19356919350020.860 ppb
2022-04-20357127280041.000 ppb
2022-04-20357127280030.820 ppb
2022-04-20357127280021.20 ppb
2022-04-20357127280011.90 ppb
2022-07-07357300770041.50 ppb
2022-07-07357300770030.820 ppb
2022-07-07357300770021.80 ppb
2022-07-07357300770011.70 ppb
2022-10-03357503430010.770 ppb
2022-10-0335750343003ND
2022-10-03357503430020.580 ppb
2022-10-0335750343004ND
2023-01-05357707460030.370 ppb
2023-01-05357707460040.470 ppb
2023-01-05357707460020.590 ppb
2023-01-05357707460010.910 ppb
2023-04-1235792471004ND
2023-04-12357924710030.540 ppb
2023-04-12357924710021.10 ppb
2023-04-12357924710010.910 ppb
2023-07-05358112280011.20 ppb
2023-07-05358112280020.950 ppb
2023-07-0535811228003ND
2023-07-05358112280040.630 ppb
2023-10-16358356870010.670 ppb
2023-10-16358356870020.690 ppb
2023-10-16358356870030.380 ppb
2023-10-1635835687004ND