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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Niagara Falls Water Board

Trichloroacetic 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)

132

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20145.81 ppb3231ND - 11.5 ppb
20155.43 ppb16163.40 ppb - 9.92 ppb
20166.03 ppb3231ND - 10.3 ppb
20178.66 ppb2423ND - 16.1 ppb
20185.60 ppb3231ND - 11.2 ppb
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for trichloroacetic 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 1Q144.41 ppb
2014-02-03 LRAA8 1Q143.74 ppb
2014-02-03 LRAA5 1Q145.27 ppb
2014-02-03 LRAA2 1Q144.67 ppb
2014-02-03 LRAA3 1Q144.86 ppb
2014-02-03 LRAA7 1Q143.82 ppb
2014-02-03 LRAA6 1Q144.12 ppb
2014-02-03 LRAA1 1Q149.37 ppb
2014-05-05 LRAA8 2Q146.53 ppb
2014-05-05 LRAA4 2Q146.16 ppb
2014-05-05 LRAA5 2Q145.64 ppb
2014-05-05 LRAA6 2Q144.77 ppb
2014-05-05 LRAA3 2Q148.00 ppb
2014-05-05 LRAA2 2Q147.29 ppb
2014-05-05LRAA1 2Q147.91 ppb
2014-05-05LRAA7 2Q147.47 ppb
2014-08-04LRAA2 3Q1411.5 ppb
2014-08-04LRAA7 3Q148.56 ppb
2014-08-04LRAA3 3Q141.06 ppb
2014-08-04LRAA4 3Q148.05 ppb
2014-08-04LRAA5 3Q149.17 ppb
2014-08-04LRAA6 3Q149.74 ppb
2014-08-04LRAA1 3Q141.49 ppb
2014-08-04LRAA8 3Q148.54 ppb
2014-11-03NF DBP9 2014Q4-55.85 ppb
2014-11-03NF DBP9 2014Q4-25.54 ppb
2014-11-03NF DBP9 2014Q4-64.61 ppb
2014-11-03NF DBP9 2014Q4-76.31 ppb
2014-11-03NF DBP9 2014Q4-84.23 ppb
2014-11-03NF DBP9 2014Q4-3ND
2014-11-03NF DBP9 2014Q4-44.72 ppb
2014-11-03NF DBP9 2014Q4-12.42 ppb
2015-02-02NFWB DBP9 1Q20154.38 ppb
2015-02-02NFWB DBP9 1Q20154.05 ppb
2015-02-02NFWB DBP9 1Q20154.09 ppb
2015-02-02NFWB DBP9 1Q20153.46 ppb
2015-02-02NFWB DBP9 1Q20153.82 ppb
2015-02-02NFWB DBP9 1Q20153.43 ppb
2015-02-02NFWB DBP9 1Q20153.40 ppb
2015-02-03NFWB DBP9 1Q20156.34 ppb
2015-05-04NFWB DBP9 2Q20159.92 ppb
2015-05-04NFWB DBP9 2Q20156.16 ppb
2015-05-04NFWB DBP9 2Q20156.99 ppb
2015-05-04NFWB DBP9 2Q20156.25 ppb
2015-05-04NFWB DBP9 2Q20153.91 ppb
2015-05-04NFWB DBP9 2Q20155.47 ppb
2015-05-04NFWB DBP9 2Q20158.17 ppb
2015-05-04NFWB DBP9 2Q20157.09 ppb
2016-02-01NFWB DBP9 1Q20164.95 ppb
2016-02-01NFWB DBP9 1Q20166.87 ppb
2016-02-01NFWB DBP9 1Q20167.05 ppb
2016-02-01NFWB DBP9 1Q20166.69 ppb
2016-02-01NFWB DBP9 1Q20166.75 ppb
2016-02-01NFWB DBP9 1Q20164.27 ppb
2016-02-01NFWB DBP9 1Q20165.30 ppb
2016-02-01NFWB DBP9 1Q20165.59 ppb
2016-05-04NFWB DBP9 2Q20165.69 ppb
2016-05-04NFWB DBP9 2Q20165.72 ppb
2016-05-04NFWB DBP9 2Q20167.63 ppb
2016-05-04NFWB DBP9 2Q201610.3 ppb
2016-05-04NFWB DBP9 2Q20167.93 ppb
2016-05-04NFWB DBP9 2Q20166.67 ppb
2016-05-04NFWB DBP9 2Q20166.54 ppb
2016-05-04NFWB DBP9 2Q20164.21 ppb
2016-08-01NFWB DBP9 3Q20168.25 ppb
2016-08-01NFWB DBP9 3Q20169.85 ppb
2016-08-01NFWB DBP9 3Q20168.30 ppb
2016-08-01NFWB DBP9 3Q2016ND
2016-08-01NFWB DBP9 3Q20167.02 ppb
2016-08-01NFWB DBP9 3Q20161.07 ppb
2016-08-01NFWB DBP9 3Q20166.49 ppb
2016-08-01NFWB DBP9 3Q20166.75 ppb
2016-11-07NFWB DBP9 4Q20166.95 ppb
2016-11-07NFWB DBP9 4Q20165.98 ppb
2016-11-07NFWB DBP9 4Q20162.48 ppb
2016-11-07NFWB DBP9 4Q20166.05 ppb
2016-11-07NFWB DBP9 4Q20166.37 ppb
2016-11-07NFWB DBP9 4Q20165.36 ppb
2016-11-07NFWB DBP9 4Q20164.45 ppb
2016-11-07NFWB DBP9 4Q20165.60 ppb
2017-02-08NFWB DBP9 1Q20176.08 ppb
2017-02-08NFWB DBP9 1Q20175.26 ppb
2017-02-08NFWB DBP9 1Q20176.01 ppb
2017-02-08NFWB DBP9 1Q20176.42 ppb
2017-02-08NFWB DBP9 1Q20176.66 ppb
2017-02-08NFWB DBP9 1Q20171.04 ppb
2017-02-08NFWB DBP9 1Q20178.48 ppb
2017-02-08NFWB DBP9 1Q20179.11 ppb
2017-05-03NFWB DBP9 2Q201711.9 ppb
2017-05-03NFWB DBP9 2Q201715.6 ppb
2017-05-03NFWB DBP9 2Q201713.6 ppb
2017-05-03NFWB DBP9 2Q201711.2 ppb
2017-05-03NFWB DBP9 2Q201712.9 ppb
2017-05-03NFWB DBP9 2Q201712.5 ppb
2017-05-03NFWB DBP9 2Q20179.33 ppb
2017-05-03NFWB DBP9 2Q201716.1 ppb
2017-08-07NFWB DBP9 3Q20178.41 ppb
2017-08-07NFWB DBP9 3Q20176.54 ppb
2017-08-07NFWB DBP9 3Q20176.89 ppb
2017-08-07NFWB DBP9 3Q201710.2 ppb
2017-08-07NFWB DBP9 3Q201710.2 ppb
2017-08-07NFWB DBP9 3Q20177.35 ppb
2017-08-07NFWB DBP9 3Q20176.04 ppb
2017-08-07NFWB DBP9 3Q2017ND
2018-02-05NFWB DBP9 1Q20186.62 ppb
2018-02-05NFWB DBP9 1Q20182.93 ppb
2018-02-05NFWB DBP9 1Q20184.53 ppb
2018-02-05NFWB DBP9 1Q20182.52 ppb
2018-02-05NFWB DBP9 1Q20183.48 ppb
2018-02-05NFWB DBP9 1Q20183.05 ppb
2018-02-05NFWB DBP9 1Q20183.48 ppb
2018-02-05NFWB DBP9 1Q20183.05 ppb
2018-05-07NFWB DBP9 2Q20184.44 ppb
2018-05-07NFWB DBP9 2Q20185.31 ppb
2018-05-07NFWB DBP9 2Q20189.68 ppb
2018-05-07NFWB DBP9 2Q20184.83 ppb
2018-05-07NFWB DBP9 2Q20184.85 ppb
2018-05-07NFWB DBP9 2Q20185.49 ppb
2018-05-07NFWB DBP9 2Q20185.06 ppb
2018-05-07NFWB DBP9 2Q20184.21 ppb
2018-08-06NFWB DBP9 3Q20183.36 ppb
2018-08-06NFWB DBP9 3Q20187.82 ppb
2018-08-06NFWB DBP9 3Q2018ND
2018-08-06NFWB DBP9 3Q20189.07 ppb
2018-08-06NFWB DBP9 3Q20187.63 ppb
2018-08-06NFWB DBP9 3Q20188.18 ppb
2018-08-06NFWB DBP9 3Q20186.67 ppb
2018-08-06NFWB DBP9 3Q20188.91 ppb
2018-11-07NFWB DBP9 4Q20187.18 ppb
2018-11-07NFWB DBP9 4Q20187.99 ppb
2018-11-07NFWB DBP9 4Q20184.20 ppb
2018-11-07NFWB DBP9 4Q20187.44 ppb
2018-11-07NFWB DBP9 4Q201811.2 ppb
2018-11-07NFWB DBP9 4Q20187.04 ppb
2018-11-07NFWB DBP9 4Q20187.39 ppb
2018-11-07NFWB DBP9 4Q20181.70 ppb