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EWG's Tap Water Database — 2021 UPDATE

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Dichloroacetic acid

Niagara Falls Water Board

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

 

136

Samples

0

Samples exceeding legal limit (MCL)

133

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201413.0 ppb32322.01 ppb - 28.2 ppb
20159.95 ppb16164.34 ppb - 21.6 ppb
201612.0 ppb3231ND - 20.7 ppb
201717.2 ppb2423ND - 29.8 ppb
201812.7 ppb3231ND - 25.7 ppb
2019N/A00N/A

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
2014-02-03 LRAA4 1Q148.13 ppb
2014-02-03 LRAA8 1Q146.23 ppb
2014-02-03 LRAA5 1Q149.93 ppb
2014-02-03 LRAA2 1Q148.25 ppb
2014-02-03 LRAA3 1Q148.32 ppb
2014-02-03 LRAA7 1Q148.17 ppb
2014-02-03 LRAA6 1Q146.47 ppb
2014-02-03 LRAA1 1Q1410.1 ppb
2014-05-05 LRAA8 2Q1411.6 ppb
2014-05-05 LRAA4 2Q1411.2 ppb
2014-05-05 LRAA5 2Q1410.2 ppb
2014-05-05 LRAA6 2Q149.20 ppb
2014-05-05 LRAA3 2Q1413.9 ppb
2014-05-05 LRAA2 2Q1412.8 ppb
2014-05-05LRAA1 2Q1421.3 ppb
2014-05-05LRAA7 2Q1414.2 ppb
2014-08-04LRAA2 3Q1427.9 ppb
2014-08-04LRAA7 3Q1425.7 ppb
2014-08-04LRAA3 3Q143.05 ppb
2014-08-04LRAA4 3Q1425.0 ppb
2014-08-04LRAA5 3Q1428.2 ppb
2014-08-04LRAA6 3Q1427.5 ppb
2014-08-04LRAA1 3Q145.05 ppb
2014-08-04LRAA8 3Q1426.5 ppb
2014-11-03NF DBP9 2014Q4-513.2 ppb
2014-11-03NF DBP9 2014Q4-213.1 ppb
2014-11-03NF DBP9 2014Q4-610.1 ppb
2014-11-03NF DBP9 2014Q4-714.4 ppb
2014-11-03NF DBP9 2014Q4-89.60 ppb
2014-11-03NF DBP9 2014Q4-32.01 ppb
2014-11-03NF DBP9 2014Q4-411.6 ppb
2014-11-03NF DBP9 2014Q4-13.82 ppb
2015-02-02NFWB DBP9 1Q20158.00 ppb
2015-02-02NFWB DBP9 1Q20156.81 ppb
2015-02-02NFWB DBP9 1Q20156.75 ppb
2015-02-02NFWB DBP9 1Q20156.12 ppb
2015-02-02NFWB DBP9 1Q20156.26 ppb
2015-02-02NFWB DBP9 1Q20154.34 ppb
2015-02-02NFWB DBP9 1Q20155.31 ppb
2015-02-03NFWB DBP9 1Q20158.89 ppb
2015-05-04NFWB DBP9 2Q201521.6 ppb
2015-05-04NFWB DBP9 2Q201511.3 ppb
2015-05-04NFWB DBP9 2Q201514.6 ppb
2015-05-04NFWB DBP9 2Q201512.1 ppb
2015-05-04NFWB DBP9 2Q20158.33 ppb
2015-05-04NFWB DBP9 2Q201510.0 ppb
2015-05-04NFWB DBP9 2Q201510.9 ppb
2015-05-04NFWB DBP9 2Q201517.9 ppb
2016-02-01NFWB DBP9 1Q20168.94 ppb
2016-02-01NFWB DBP9 1Q201619.7 ppb
2016-02-01NFWB DBP9 1Q201616.6 ppb
2016-02-01NFWB DBP9 1Q20167.45 ppb
2016-02-01NFWB DBP9 1Q20168.67 ppb
2016-02-01NFWB DBP9 1Q20169.43 ppb
2016-02-01NFWB DBP9 1Q20169.10 ppb
2016-02-01NFWB DBP9 1Q201610.9 ppb
2016-05-04NFWB DBP9 2Q201616.8 ppb
2016-05-04NFWB DBP9 2Q201615.1 ppb
2016-05-04NFWB DBP9 2Q201615.4 ppb
2016-05-04NFWB DBP9 2Q201613.8 ppb
2016-05-04NFWB DBP9 2Q20164.75 ppb
2016-05-04NFWB DBP9 2Q201612.2 ppb
2016-05-04NFWB DBP9 2Q201614.4 ppb
2016-05-04NFWB DBP9 2Q201611.2 ppb
2016-08-01NFWB DBP9 3Q201618.1 ppb
2016-08-01NFWB DBP9 3Q201618.7 ppb
2016-08-01NFWB DBP9 3Q201619.1 ppb
2016-08-01NFWB DBP9 3Q2016ND
2016-08-01NFWB DBP9 3Q201615.8 ppb
2016-08-01NFWB DBP9 3Q201620.7 ppb
2016-08-01NFWB DBP9 3Q201617.8 ppb
2016-08-01NFWB DBP9 3Q20161.12 ppb
2016-11-07NFWB DBP9 4Q201612.6 ppb
2016-11-07NFWB DBP9 4Q201611.7 ppb
2016-11-07NFWB DBP9 4Q20161.21 ppb
2016-11-07NFWB DBP9 4Q201613.2 ppb
2016-11-07NFWB DBP9 4Q201613.3 ppb
2016-11-07NFWB DBP9 4Q20164.07 ppb
2016-11-07NFWB DBP9 4Q201611.0 ppb
2016-11-07NFWB DBP9 4Q201612.8 ppb
2017-02-08NFWB DBP9 1Q201711.6 ppb
2017-02-08NFWB DBP9 1Q201712.3 ppb
2017-02-08NFWB DBP9 1Q201711.5 ppb
2017-02-08NFWB DBP9 1Q201719.5 ppb
2017-02-08NFWB DBP9 1Q20172.38 ppb
2017-02-08NFWB DBP9 1Q201711.2 ppb
2017-02-08NFWB DBP9 1Q201712.1 ppb
2017-02-08NFWB DBP9 1Q201713.8 ppb
2017-05-03NFWB DBP9 2Q201724.1 ppb
2017-05-03NFWB DBP9 2Q201725.8 ppb
2017-05-03NFWB DBP9 2Q201722.7 ppb
2017-05-03NFWB DBP9 2Q201723.1 ppb
2017-05-03NFWB DBP9 2Q201712.6 ppb
2017-05-03NFWB DBP9 2Q201722.0 ppb
2017-05-03NFWB DBP9 2Q201722.5 ppb
2017-05-03NFWB DBP9 2Q201729.8 ppb
2017-08-07NFWB DBP9 3Q201723.6 ppb
2017-08-07NFWB DBP9 3Q2017ND
2017-08-07NFWB DBP9 3Q201723.6 ppb
2017-08-07NFWB DBP9 3Q201718.6 ppb
2017-08-07NFWB DBP9 3Q20175.58 ppb
2017-08-07NFWB DBP9 3Q201721.5 ppb
2017-08-07NFWB DBP9 3Q201721.7 ppb
2017-08-07NFWB DBP9 3Q201720.6 ppb
2018-02-05NFWB DBP9 1Q201811.3 ppb
2018-02-05NFWB DBP9 1Q20189.00 ppb
2018-02-05NFWB DBP9 1Q201818.6 ppb
2018-02-05NFWB DBP9 1Q201810.0 ppb
2018-02-05NFWB DBP9 1Q20188.86 ppb
2018-02-05NFWB DBP9 1Q20189.34 ppb
2018-02-05NFWB DBP9 1Q20185.89 ppb
2018-02-05NFWB DBP9 1Q20189.56 ppb
2018-05-07NFWB DBP9 2Q201814.4 ppb
2018-05-07NFWB DBP9 2Q201812.4 ppb
2018-05-07NFWB DBP9 2Q201814.9 ppb
2018-05-07NFWB DBP9 2Q201810.6 ppb
2018-05-07NFWB DBP9 2Q201825.7 ppb
2018-05-07NFWB DBP9 2Q201814.9 ppb
2018-05-07NFWB DBP9 2Q201812.3 ppb
2018-05-07NFWB DBP9 2Q201811.0 ppb
2018-08-06NFWB DBP9 3Q20182.06 ppb
2018-08-06NFWB DBP9 3Q201819.3 ppb
2018-08-06NFWB DBP9 3Q201818.4 ppb
2018-08-06NFWB DBP9 3Q201819.6 ppb
2018-08-06NFWB DBP9 3Q201818.8 ppb
2018-08-06NFWB DBP9 3Q201819.9 ppb
2018-08-06NFWB DBP9 3Q201817.6 ppb
2018-08-06NFWB DBP9 3Q2018ND
2018-11-07NFWB DBP9 4Q201814.0 ppb
2018-11-07NFWB DBP9 4Q20183.41 ppb
2018-11-07NFWB DBP9 4Q201811.6 ppb
2018-11-07NFWB DBP9 4Q201813.4 ppb
2018-11-07NFWB DBP9 4Q201815.2 ppb
2018-11-07NFWB DBP9 4Q20186.03 ppb
2018-11-07NFWB DBP9 4Q201814.3 ppb
2018-11-07NFWB DBP9 4Q201814.0 ppb