Know Your Environment. Protect Your Health.

Dichloroacetic acid

Danbury Water Department

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.

 

168

Samples

0

Samples exceeding legal limit (MCL)

164

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20187.31 ppb3231ND - 14.2 ppb
20196.01 ppb3230ND - 13.8 ppb
20205.63 ppb3231ND - 14.5 ppb
20216.83 ppb16160.600 ppb - 15.7 ppb
202214.1 ppb24241.70 ppb - 190.0 ppb
20236.50 ppb32321.80 ppb - 19.0 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
2018-03-14211585GE8.30 ppb
2018-03-14211587GE8.70 ppb
2018-03-14211589GE10.00 ppb
2018-03-14211591GE3.80 ppb
2018-03-14211599GE9.70 ppb
2018-03-15211593GE7.80 ppb
2018-03-15211595GE9.70 ppb
2018-03-15211597GE10.00 ppb
2018-06-19215751GE10.4 ppb
2018-06-19215737GE4.80 ppb
2018-06-19215739GE14.0 ppb
2018-06-19215743GE2.40 ppb
2018-06-19215745GE9.40 ppb
2018-06-20215747GE14.2 ppb
2018-06-20215749GE4.90 ppb
2018-06-20215741GE10.00 ppb
2018-09-14DBP 2005054847.40 ppb
2018-09-14DBP 20050548611.2 ppb
2018-09-14DBP 2005054914.60 ppb
2018-09-14DBP 2005054931.90 ppb
2018-09-14DBP 2005054952.20 ppb
2018-09-14DBP 2005054975.40 ppb
2018-09-14DBP 2005054991.80 ppb
2018-09-17DBP 200505658ND
2018-12-14DBP 2005160937.10 ppb
2018-12-14DBP 2005160945.50 ppb
2018-12-14DBP 2005160957.30 ppb
2018-12-14DBP 2005160960.600 ppb
2018-12-14DBP 20051609711.3 ppb
2018-12-14DBP 2005160987.20 ppb
2018-12-14DBP 20051609912.8 ppb
2018-12-14DBP 2005161009.50 ppb
2019-03-14DBP 2005247606.20 ppb
2019-03-14DBP 2005247615.90 ppb
2019-03-14DBP 2005247627.00 ppb
2019-03-14DBP 2005247633.80 ppb
2019-03-14DBP 2005247646.90 ppb
2019-03-14DBP 20052476510.3 ppb
2019-03-14DBP 20052476611.6 ppb
2019-03-14DBP 2005247678.00 ppb
2019-06-20DBP 2005372653.30 ppb
2019-06-20DBP 2005372667.30 ppb
2019-06-20DBP 2005372677.00 ppb
2019-06-20DBP 200537268ND
2019-06-20DBP 2005372697.40 ppb
2019-06-20DBP 20053727012.1 ppb
2019-06-20DBP 2005372711.80 ppb
2019-06-20DBP 2005372728.80 ppb
2019-09-19DBP 200549612ND
2019-09-19DBP 20054961313.8 ppb
2019-09-19DBP 2005496150.600 ppb
2019-09-19DBP 2005496173.00 ppb
2019-09-19DBP 2005496183.40 ppb
2019-10-11DBP 2005525033.90 ppb
2019-10-11DBP 2005525045.90 ppb
2019-10-11DBP 2005525056.90 ppb
2019-12-19DBP 2005609262.80 ppb
2019-12-19DBP 2005609275.40 ppb
2019-12-19DBP 2005609295.20 ppb
2019-12-19DBP 2005609309.10 ppb
2019-12-19DBP 2005609319.30 ppb
2019-12-19DBP 2005609321.50 ppb
2019-12-19DBP 2005609347.00 ppb
2019-12-19DBP 2005609357.10 ppb
2020-03-19DBP 2005699763.60 ppb
2020-03-19DBP 2005699775.10 ppb
2020-03-19DBP 2005699786.90 ppb
2020-03-19DBP 2005699790.800 ppb
2020-03-19DBP 2005699807.80 ppb
2020-03-19DBP 2005699816.10 ppb
2020-03-19DBP 20056998210.4 ppb
2020-03-19DBP 2005699837.40 ppb
2020-06-18DBP 2005797941.70 ppb
2020-06-18DBP 2005797957.10 ppb
2020-06-18DBP 2005797966.00 ppb
2020-06-18DBP 2005797970.700 ppb
2020-06-18DBP 2005797987.10 ppb
2020-06-18DBP 2005797997.30 ppb
2020-06-18DBP 2005798001.70 ppb
2020-06-18DBP 2005798018.80 ppb
2020-09-17DBP 2005906610.900 ppb
2020-09-17DBP 2005906627.80 ppb
2020-09-17DBP 200590663ND
2020-09-17DBP 2005906641.70 ppb
2020-09-17DBP 2005906658.40 ppb
2020-09-17DBP 2005906666.80 ppb
2020-09-17DBP 2005906671.20 ppb
2020-09-17DBP 2005906681.40 ppb
2020-12-18DBP 2006015983.60 ppb
2020-12-18DBP 2006015995.30 ppb
2020-12-18DBP 2006016006.00 ppb
2020-12-18DBP 2006016014.60 ppb
2020-12-18DBP 2006016028.30 ppb
2020-12-18DBP 20060160311.1 ppb
2020-12-18DBP 2006016049.90 ppb
2020-12-18DBP 20060160514.5 ppb
2021-03-18DBP 2006103164.70 ppb
2021-03-18DBP 2006103175.30 ppb
2021-03-18DBP 2006103185.20 ppb
2021-03-18DBP 2006103197.20 ppb
2021-03-18DBP 2006103201.70 ppb
2021-03-18DBP 2006103219.70 ppb
2021-03-18DBP 20061032211.6 ppb
2021-03-18DBP 2006103235.60 ppb
2021-06-17DBP 2006213414.80 ppb
2021-06-17DBP 2006213428.40 ppb
2021-06-17DBP 2006213430.600 ppb
2021-06-17DBP 2006213446.60 ppb
2021-06-17DBP 2006213457.50 ppb
2021-06-17DBP 2006213467.30 ppb
2021-06-17DBP 2006213477.30 ppb
2021-06-17DBP 20062134815.7 ppb
2022-06-142883038.80 ppb
2022-06-14288305190.0 ppb
2022-06-142882973.10 ppb
2022-06-142882999.20 ppb
2022-06-1528830118.0 ppb
2022-06-152882914.80 ppb
2022-06-1528829311.0 ppb
2022-06-152882959.70 ppb
2022-09-142962909.30 ppb
2022-09-152962924.60 ppb
2022-09-152962941.70 ppb
2022-09-152962963.90 ppb
2022-09-152962983.40 ppb
2022-09-152963001.80 ppb
2022-09-152963029.10 ppb
2022-09-152963082.90 ppb
2022-12-133030286.70 ppb
2022-12-133030315.10 ppb
2022-12-133030357.60 ppb
2022-12-133030377.60 ppb
2022-12-133030396.60 ppb
2022-12-143030335.00 ppb
2022-12-153030242.60 ppb
2022-12-153030265.30 ppb
2023-03-063078135.20 ppb
2023-03-073078114.80 ppb
2023-03-073078124.50 ppb
2023-03-073078179.40 ppb
2023-03-073078185.20 ppb
2023-03-073078143.20 ppb
2023-03-073078168.50 ppb
2023-03-083078156.20 ppb
2023-06-06N3F0423-016.10 ppb
2023-06-06N3F0423-0311.0 ppb
2023-06-06N3F0423-0619.0 ppb
2023-06-06N3F0423-089.60 ppb
2023-06-07N3F0423-075.80 ppb
2023-06-07N3F0423-041.80 ppb
2023-06-07N3F0423-0210.00 ppb
2023-06-08N3F0423-058.20 ppb
2023-09-12CO999822.70 ppb
2023-09-12CO999839.70 ppb
2023-09-12CO999899.90 ppb
2023-09-13CO999864.00 ppb
2023-09-13CO999873.20 ppb
2023-09-13CO999882.50 ppb
2023-09-14CO999849.00 ppb
2023-09-14CO999851.80 ppb
2023-12-11CP682135.90 ppb
2023-12-12CP682114.00 ppb
2023-12-12CP682125.30 ppb
2023-12-12CP682141.80 ppb
2023-12-12CP682169.50 ppb
2023-12-12CP682177.80 ppb
2023-12-12CP682188.00 ppb
2023-12-13CP682154.30 ppb