Know Your Environment. Protect Your Health.

Dichloroacetic acid

Watertown Water & Sewer Authority

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

96

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201818.3 ppb16164.50 ppb - 27.2 ppb
201919.3 ppb16167.60 ppb - 26.8 ppb
202020.5 ppb16166.60 ppb - 25.4 ppb
202120.7 ppb16167.05 ppb - 28.5 ppb
202218.2 ppb16167.56 ppb - 22.1 ppb
202315.3 ppb16162.04 ppb - 24.4 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
2018-03-07DBP 20048953419.8 ppb
2018-03-07DBP 20048953522.7 ppb
2018-03-07DBP 20048953623.3 ppb
2018-03-07DBP 20048953316.5 ppb
2018-06-06DBP 20049632817.6 ppb
2018-06-06DBP 20049632927.2 ppb
2018-06-06DBP 20049633027.1 ppb
2018-06-06DBP 20049633126.1 ppb
2018-09-05DBP 2005040614.50 ppb
2018-09-05DBP 20050406215.4 ppb
2018-09-05DBP 2005040637.50 ppb
2018-09-05DBP 20050406418.4 ppb
2018-12-05DBP 2005149809.40 ppb
2018-12-05DBP 20051498221.3 ppb
2018-12-05DBP 20051498120.6 ppb
2018-12-05DBP 20051497814.6 ppb
2019-03-06DBP 20052370819.3 ppb
2019-03-06DBP 20052370918.3 ppb
2019-03-06DBP 20052371019.1 ppb
2019-03-06DBP 20052371114.1 ppb
2019-06-05DBP 20053506824.6 ppb
2019-06-05DBP 20053506925.1 ppb
2019-06-05DBP 20053507019.8 ppb
2019-06-05DBP 20053507124.4 ppb
2019-09-05DBP 20054763726.8 ppb
2019-09-05DBP 20054764023.4 ppb
2019-09-05DBP 20054763926.4 ppb
2019-09-05DBP 20054763610.00 ppb
2019-12-05DBP 20055914713.5 ppb
2019-12-05DBP 20055914821.5 ppb
2019-12-05DBP 20055914915.2 ppb
2019-12-05DBP 2005591467.60 ppb
2020-03-04DBP 20056819721.0 ppb
2020-03-04DBP 20056819814.8 ppb
2020-03-04DBP 20056819919.4 ppb
2020-03-04DBP 20056820015.0 ppb
2020-06-03DBP 20057785524.5 ppb
2020-06-03DBP 20057785624.8 ppb
2020-06-03DBP 20057785421.3 ppb
2020-06-03DBP 20057785320.2 ppb
2020-09-02DBP 2005886796.60 ppb
2020-09-02DBP 20058868023.6 ppb
2020-09-02DBP 20058868121.2 ppb
2020-09-02DBP 20058868225.3 ppb
2020-12-02DBP 20059979119.5 ppb
2020-12-02DBP 20059979220.0 ppb
2020-12-02DBP 20059979325.4 ppb
2020-12-02DBP 20059979424.6 ppb
2021-03-10DBP 20060934922.7 ppb
2021-03-10DBP 20060934622.4 ppb
2021-03-10DBP 20060934715.8 ppb
2021-03-10DBP 20060934820.9 ppb
2021-06-02DBP 20061913718.5 ppb
2021-06-02DBP 20061913922.7 ppb
2021-06-02DBP 20061914026.1 ppb
2021-06-02DBP 20061913628.2 ppb
2021-09-08300053894 3000538957.05 ppb
2021-09-08300053900 3000539018.57 ppb
2021-09-08300053903 30005390415.3 ppb
2021-09-22300065698 30006569915.8 ppb
2021-12-01D300110687 30011068828.5 ppb
2021-12-01D300110684 30011068527.9 ppb
2021-12-01D300110681 30011068225.5 ppb
2021-12-01D300110678 30011067926.0 ppb
2022-03-02D300151783 30015178421.1 ppb
2022-03-02D300151786 30015178720.7 ppb
2022-03-02D300151789 30015179019.3 ppb
2022-03-02D300151792 30015179320.9 ppb
2022-06-01D300192098 30019209922.1 ppb
2022-06-01D300192101 30019210218.0 ppb
2022-06-01D300192104 30019210521.0 ppb
2022-06-01D300192107 30019210821.5 ppb
2022-09-14D300244033 30024403417.7 ppb
2022-09-14D300244027 30024402811.4 ppb
2022-09-14D300244024 3002440257.56 ppb
2022-09-14D300244030 30024403115.8 ppb
2022-12-07D300282718 30028271919.3 ppb
2022-12-07D300282721 30028272216.9 ppb
2022-12-07D300282724 30028272519.3 ppb
2022-12-07D300282727 30028272819.5 ppb
2023-03-16D300321892 30032189317.7 ppb
2023-03-16D300321895 30032189612.7 ppb
2023-03-16D300321898 30032189919.2 ppb
2023-03-16D300321901 30032190213.7 ppb
2023-06-14D300365450 30036545118.4 ppb
2023-06-14D300365456 30036545722.2 ppb
2023-06-14D300365453 30036545422.8 ppb
2023-06-14D300365447 30036544824.4 ppb
2023-09-06D300410877 3004108784.59 ppb
2023-09-06D300410880 30041088114.6 ppb
2023-09-06D300410883 3004108847.28 ppb
2023-09-06D300410886 3004108872.04 ppb
2023-12-07D300456855 30045685612.8 ppb
2023-12-07D300456858 30045685913.2 ppb
2023-12-07D300456861 30045686219.2 ppb
2023-12-07D300456864 30045686519.2 ppb