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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Indian Village Water System

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

52

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
20151.33 ppb162ND - 10.6 ppb
20160.724 ppb162ND - 5.79 ppb
20178.71 ppb16162.70 ppb - 15.6 ppb
201810.3 ppb16167.00 ppb - 14.4 ppb
201914.1 ppb16167.00 ppb - 29.1 ppb

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
2014-02-071276126ND
2014-02-071276125ND
2014-02-071276126ND
2014-02-071276125ND
2014-05-071299300ND
2014-05-071299300ND
2014-05-091299299ND
2014-05-091299299ND
2014-08-081324623ND
2014-08-081324624ND
2014-08-081324624ND
2014-08-081324623ND
2014-11-211352453ND
2014-11-211352454ND
2014-11-211352454ND
2014-11-211352453ND
2015-02-131372659ND
2015-02-131372660ND
2015-02-131372660ND
2015-02-131372659ND
2015-05-071393790ND
2015-05-071393791ND
2015-05-071393791ND
2015-05-071393790ND
2015-08-071417265ND
2015-08-071417264ND
2015-08-071417265ND
2015-08-071417264ND
2015-11-061442135ND
2015-11-06144213610.6 ppb
2015-11-06144213610.6 ppb
2015-11-061442135ND
2016-02-051465218ND
2016-02-051465219ND
2016-02-051465219ND
2016-02-051465218ND
2016-05-101490091ND
2016-05-101490090ND
2016-05-101490091ND
2016-05-101490090ND
2016-08-041513199ND
2016-08-041513200ND
2016-08-041513200ND
2016-08-041513199ND
2016-11-2115434855.79 ppb
2016-11-211543487ND
2016-11-211543487ND
2016-11-2115434855.79 ppb
2017-02-02352928740446.50 ppb
2017-02-02352928740432.70 ppb
2017-02-02352928740432.70 ppb
2017-02-02352928740446.50 ppb
2017-05-05353106180375.20 ppb
2017-05-05353106180375.20 ppb
2017-05-053531061803810.1 ppb
2017-05-053531061803810.1 ppb
2017-08-15353312850038.40 ppb
2017-08-153533128500414.4 ppb
2017-08-15353312850038.40 ppb
2017-08-153533128500414.4 ppb
2017-11-163534918000215.6 ppb
2017-11-16353491800016.80 ppb
2017-11-16353491800016.80 ppb
2017-11-163534918000215.6 ppb
2018-02-153537520500213.7 ppb
2018-02-15353752050018.20 ppb
2018-02-153537520500213.7 ppb
2018-02-15353752050018.20 ppb
2018-05-163539322000210.8 ppb
2018-05-163539322000210.8 ppb
2018-05-16353932200017.00 ppb
2018-05-16353932200017.00 ppb
2018-08-093541063900213.8 ppb
2018-08-09354106390017.00 ppb
2018-08-09354106390017.00 ppb
2018-08-093541063900213.8 ppb
2018-11-07354299700017.80 ppb
2018-11-073542997000214.4 ppb
2018-11-07354299700017.80 ppb
2018-11-073542997000214.4 ppb
2019-02-133544847800217.2 ppb
2019-02-13354484780018.30 ppb
2019-02-13354484780018.30 ppb
2019-02-133544847800217.2 ppb
2019-05-213547022400215.5 ppb
2019-05-213547022400215.5 ppb
2019-05-21354702240018.00 ppb
2019-05-21354702240018.00 ppb
2019-08-143549075100218.6 ppb
2019-08-14354907510017.00 ppb
2019-08-14354907510017.00 ppb
2019-08-143549075100218.6 ppb
2019-11-073551093600129.1 ppb
2019-11-073551093600129.1 ppb
2019-11-22355145980018.80 ppb
2019-11-22355145980018.80 ppb