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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Lockport WD#3

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.

MORE ABOUT THIS CONTAMINANT

 

80

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201411.0 ppb16166.30 ppb - 19.6 ppb
201512.2 ppb888.17 ppb - 19.0 ppb
201614.4 ppb20201.39 ppb - 23.8 ppb
201718.5 ppb12127.37 ppb - 24.1 ppb
201815.8 ppb16163.16 ppb - 19.9 ppb
201911.3 ppb889.32 ppb - 12.5 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-041ST QTR DBP14 LR6.90 ppb
2014-02-041ST QTR DBP14 LR8.00 ppb
2014-02-04FIRST QTR DBP LR6.30 ppb
2014-02-041ST QTR DBP14 LR8.10 ppb
2014-05-08DBP9 TLCKPT 2Q2011.1 ppb
2014-05-08DBP9 TLCKPT 2Q207.70 ppb
2014-05-08DBP9 TLCKPT 2Q209.30 ppb
2014-05-08DBP9 TLCKPT 2Q208.30 ppb
2014-08-07DBP9 TLCKPT 3Q2014.3 ppb
2014-08-07DBP9 TLCKPT 3Q209.30 ppb
2014-09-03DBP9 TLCKPT 3Q208.81 ppb
2014-09-03DBP9 TLCKPT 3Q2015.0 ppb
2014-11-07DBP9 TLCKPT 4Q2014.8 ppb
2014-11-07DBP9 TLCKPT 4Q2015.4 ppb
2014-11-07DBP9 TLCKPT 4Q2013.6 ppb
2014-11-07DBP9 TLCKPT 4Q2019.6 ppb
2015-02-04DBP9 TLCKPT 1Q209.71 ppb
2015-02-04DBP9 TLCKPT 1Q208.17 ppb
2015-02-04DBP9 TLCKPT 1Q208.28 ppb
2015-02-04DBP9 TLCKPT 1Q2011.6 ppb
2015-05-05DBP9 TLCKPT 2Q2019.0 ppb
2015-05-05DBP9 TLCKPT 2Q2012.5 ppb
2015-05-05DBP9 TLCKPT 2Q2016.6 ppb
2015-05-05DBP9 TLCKPT 2Q2012.0 ppb
2016-02-03DBP9 TLCKPT 1Q2014.0 ppb
2016-02-03DBP9 TLCKPT 1Q2011.1 ppb
2016-02-03DBP9 TLCKPT 1Q2014.0 ppb
2016-02-03DBP9 TLCKPT 1Q201.39 ppb
2016-02-07DBP9 TLCKPT 1Q2016.0 ppb
2016-02-07DBP9 TLCKPT 1Q2018.8 ppb
2016-02-07DBP9 TLCKPT 1Q2015.7 ppb
2016-02-07DBP9 TLCKPT 1Q2014.0 ppb
2016-05-05DBP9 TLCKPT 2Q2016.9 ppb
2016-05-05DBP9 TLCKPT 2Q2022.0 ppb
2016-05-05DBP9 TLCKPT 2Q2023.8 ppb
2016-05-05DBP9 TLCKPT 2Q2016.3 ppb
2016-08-09DBP9 TLCKPT 3Q2015.2 ppb
2016-08-09DBP9 TLCKPT 3Q2017.3 ppb
2016-08-09DBP9 TLCKPT 3Q2011.2 ppb
2016-08-09DBP9 TLCKPT 3Q2015.4 ppb
2016-11-07DBP9 TLCKPT 4Q2014.3 ppb
2016-11-07DBP9 TLCKPT 4Q203.93 ppb
2016-11-07DBP9 TLCKPT 4Q2013.8 ppb
2016-11-07DBP9 TLCKPT 4Q2012.3 ppb
2017-02-07DBP9 TLCKPT 1Q2014.0 ppb
2017-02-07DBP9 TLCKPT 1Q2016.0 ppb
2017-02-07DBP9 TLCKPT 1Q2015.7 ppb
2017-02-07DBP9 TLCKPT 1Q2018.8 ppb
2017-05-05DBP9 TLCKPT 2Q2023.5 ppb
2017-05-05DBP9 TLCKPT 2Q2024.1 ppb
2017-05-05DBP9 TLCKPT 2Q2021.6 ppb
2017-05-05DBP9 TLCKPT 2Q2021.1 ppb
2017-08-08DBP9 TLCKPT 3Q2019.7 ppb
2017-08-08DBP9 TLCKPT 3Q207.37 ppb
2017-08-08DBP9 TLCKPT 3Q2020.0 ppb
2017-08-08DBP9 TLCKPT 3Q2020.3 ppb
2018-02-06DBP9 TLCKPT 1Q2013.8 ppb
2018-02-06DBP9 TLCKPT 1Q2019.2 ppb
2018-02-06DBP9 TLCKPT 1Q2012.9 ppb
2018-02-06DBP9 TLCKPT 1Q2013.3 ppb
2018-05-09DBP9 TLCKPT 2Q2018.6 ppb
2018-05-09DBP9 TLCKPT 2Q2013.7 ppb
2018-05-09DBP9 TLCKPT 2Q2017.7 ppb
2018-05-09DBP9 TLCKPT 2Q2018.5 ppb
2018-08-09DBP9 TLCKPT 3Q2019.5 ppb
2018-08-09DBP9 TLCKPT 3Q2014.3 ppb
2018-08-09DBP9 TLCKPT 3Q2019.9 ppb
2018-08-09DBP9 TLCKPT 3Q2019.7 ppb
2018-11-05DBP9 TLCKPT 4Q2014.9 ppb
2018-11-05DBP9 TLCKPT 4Q203.16 ppb
2018-11-05DBP9 TLCKPT 4Q2018.1 ppb
2018-11-05DBP9 TLCKPT 4Q2015.8 ppb
2019-02-04DBP9 TLCKPT 1Q209.32 ppb
2019-02-04DBP9 TLCKPT 1Q2011.6 ppb
2019-02-04DBP9 TLCKPT 1Q2012.2 ppb
2019-02-04DBP9 TLCKPT 1Q2011.0 ppb
2019-05-07DBP9 TLCKPT 2Q2012.5 ppb
2019-05-07DBP9 TLCKPT 2Q209.76 ppb
2019-05-07DBP9 TLCKPT 2Q2011.9 ppb
2019-05-07DBP9 TLCKPT 2Q2012.3 ppb