Know Your Environment. Protect Your Health.

Dichloroacetic acid

CTWC - Unionville 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.

 

97

Samples

0

Samples exceeding legal limit (MCL)

97

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201812.1 ppb16162.50 ppb - 18.2 ppb
20198.73 ppb16162.20 ppb - 19.5 ppb
20208.14 ppb16160.900 ppb - 15.1 ppb
20218.04 ppb17172.50 ppb - 17.8 ppb
20227.58 ppb16161.20 ppb - 20.0 ppb
20239.28 ppb16165.50 ppb - 14.0 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
2018-01-16BZ73287HAA513.0 ppb
2018-01-16BZ73288HAA515.0 ppb
2018-01-16BZ73289HAA512.0 ppb
2018-01-16BZ73286HAA516.0 ppb
2018-04-27CA37381HAA513.0 ppb
2018-04-27CA37382HAA514.0 ppb
2018-04-27CA37383HAA515.0 ppb
2018-04-27CA37384HAA515.0 ppb
2018-07-24CA9673416.0 ppb
2018-07-24CA9673518.0 ppb
2018-07-24CA967368.20 ppb
2018-07-24CA967372.50 ppb
2018-10-02DBP 2005076669.10 ppb
2018-10-02DBP 2005080205.70 ppb
2018-10-02DBP 2005076673.40 ppb
2018-10-02DBP 20050766518.2 ppb
2019-01-08DBP 20051813019.5 ppb
2019-01-08DBP 20051813610.8 ppb
2019-01-08DBP 20051813913.4 ppb
2019-01-08DBP 2005181434.60 ppb
2019-04-09DBP 2005278468.00 ppb
2019-04-09DBP 2005278474.20 ppb
2019-04-09DBP 20052784815.7 ppb
2019-04-09DBP 2005278495.90 ppb
2019-07-02DBP 2005389873.70 ppb
2019-07-02DBP 20053898915.9 ppb
2019-07-02DBP 2005389886.10 ppb
2019-07-02DBP 20053898611.4 ppb
2019-10-08DBP 20055201310.00 ppb
2019-10-08DBP 2005520142.20 ppb
2019-10-08DBP 2005520152.90 ppb
2019-10-08DBP 2005520125.30 ppb
2020-01-16DBP 20056340013.0 ppb
2020-01-16DBP 2005634016.40 ppb
2020-01-16DBP 2005634026.30 ppb
2020-01-16DBP 20056340315.1 ppb
2020-04-16DBP 2005729200.900 ppb
2020-04-16DBP 20057292213.7 ppb
2020-04-16DBP 20057291814.8 ppb
2020-04-16DBP 20057291712.2 ppb
2020-07-13DBP 2005824816.20 ppb
2020-07-13DBP 2005824821.40 ppb
2020-07-13DBP 20058248312.7 ppb
2020-07-14DBP 20058284113.6 ppb
2020-10-19DBP 2005944691.80 ppb
2020-10-20DBP 2005948474.70 ppb
2020-10-20DBP 2005948482.70 ppb
2020-10-20DBP 2005948494.70 ppb
2021-01-08DBP 2006034133.60 ppb
2021-01-08DBP 2006034106.00 ppb
2021-01-08DBP 2006034115.80 ppb
2021-01-08DBP 2006034122.50 ppb
2021-04-15DBP 2006136587.80 ppb
2021-04-15DBP 20061365910.9 ppb
2021-04-15DBP 20061366014.0 ppb
2021-04-15DBP 2006136617.60 ppb
2021-07-15DBP 2006251355.20 ppb
2021-07-15DBP 20062513616.8 ppb
2021-07-15DBP 2006251376.20 ppb
2021-07-15DBP 2006251385.10 ppb
2021-07-29DBP 20062667811.3 ppb
2021-10-11H300079421 30007942717.8 ppb
2021-10-11H300079423 3000794314.00 ppb
2021-10-11H300079422 3000794294.25 ppb
2021-10-11H300079420 3000794257.80 ppb
2022-01-13CK155227.80 ppb
2022-01-13CK155236.90 ppb
2022-01-13CK1552420.0 ppb
2022-01-13CK1552511.0 ppb
2022-04-08CL061487.70 ppb
2022-04-08CL061491.60 ppb
2022-04-08CL061501.20 ppb
2022-04-08CL061516.70 ppb
2022-07-11CL753275.90 ppb
2022-07-11CL753305.80 ppb
2022-07-11CL753284.30 ppb
2022-07-11CL7532913.0 ppb
2022-10-07CM588206.40 ppb
2022-10-07CM588216.00 ppb
2022-10-07CM588229.10 ppb
2022-10-07CM588237.90 ppb
2023-01-16CN2447912.0 ppb
2023-01-16CN244808.00 ppb
2023-01-16CN2448111.0 ppb
2023-01-16CN244825.50 ppb
2023-04-07CN807916.70 ppb
2023-04-07CN807938.50 ppb
2023-04-07CN8079214.0 ppb
2023-04-07CN8079011.0 ppb
2023-07-18CO530347.00 ppb
2023-07-18CO530358.60 ppb
2023-07-18CO5303613.0 ppb
2023-07-18CO5303711.0 ppb
2023-10-04CP178116.80 ppb
2023-10-04CP178127.10 ppb
2023-10-04CP1781311.0 ppb
2023-10-04CP178147.20 ppb