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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

Oak Park Water Service

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND120ND
20130.131 ppb161ND - 2.10 ppb
20140.144 ppb162ND - 1.20 ppb
20150.110 ppb202ND - 1.10 ppb
2016ND160ND
2017ND160ND

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
2012-04-039588-004-0954ND
2012-04-039588-002-0929ND
2012-04-039588-003-1050ND
2012-04-039588-005-1100ND
2012-07-249588-003-0810ND
2012-07-249588-005-0759ND
2012-07-249588-002-0743ND
2012-07-249588-004-0713ND
2012-10-049588-003-0729ND
2012-10-049588-005-0739ND
2012-10-049588-002-0717ND
2012-10-049588-004-0709ND
2013-02-059588-002-1005ND
2013-02-059588-003-0840ND
2013-02-059588-005-0825ND
2013-02-059588-004-0800ND
2013-04-029588-002-1030ND
2013-04-029588-003-0950ND
2013-04-029588-004-0915ND
2013-04-029588-005-0935ND
2013-07-039588-002-09552.10 ppb
2013-07-039588-005-1030ND
2013-07-039588-003-1010ND
2013-07-039588-004-0930ND
2013-10-019588-004-0725ND
2013-10-019588-002-0745ND
2013-10-019588-005-0830ND
2013-10-019588-003-0800ND
2014-01-079588-004-0809ND
2014-01-079588-005-0835ND
2014-01-079588-002-0856ND
2014-01-079588-003-0823ND
2014-04-019588-003-0828ND
2014-04-019588-002-08121.10 ppb
2014-04-019588-005-0842ND
2014-04-019588-004-0742ND
2014-07-089588-005-0825ND
2014-07-089588-002-07501.20 ppb
2014-07-089588-003-0805ND
2014-07-089588-004-0725ND
2014-10-079588-002-0742ND
2014-10-079588-005-0810ND
2014-10-079588-003-0754ND
2014-10-079588-004-0818ND
2015-01-079588-002-0900ND
2015-01-079588-005-0945ND
2015-01-079588-004-1035ND
2015-01-079588-003-0925ND
2015-04-079588-002-0845ND
2015-04-079588-003-1048ND
2015-04-079588-004-10151.10 ppb
2015-04-079588-005-1048ND
2015-07-079588-002-1443ND
2015-07-079588-003-1357ND
2015-07-079588-004-1346ND
2015-07-079588-005-1410ND
2015-10-069588-005-0930ND
2015-10-069588-003-0950ND
2015-10-069588-004-11451.10 ppb
2015-10-069588-002-1035ND
2015-12-019588-004-1124ND
2015-12-019588-003-1036ND
2015-12-019588-002-0908ND
2015-12-019588-005-1051ND
2016-01-059588-002-0920ND
2016-01-059588-003-0900ND
2016-01-059588-005-1000ND
2016-01-059588-004-0840ND
2016-04-059588-004-1155ND
2016-04-059588-005-1245ND
2016-04-059588-003-1230ND
2016-04-059588-002-1215ND
2016-07-059588-005-1255ND
2016-07-059588-002-1155ND
2016-07-059588-004-1047ND
2016-07-059588-003-1240ND
2016-10-049588-005-1010ND
2016-10-049588-002-0925ND
2016-10-049588-003-0950ND
2016-10-049588-004-0900ND
2017-01-039588-003-1021ND
2017-01-039588-002-0949ND
2017-01-039588-005-1118ND
2017-01-039588-004-1052ND
2017-04-049588-003-1310ND
2017-04-049588-002-1245ND
2017-04-049588-004-1155ND
2017-04-049588-005-1325ND
2017-07-119588-005-0907ND
2017-07-119588-002-1019ND
2017-07-119588-003-0920ND
2017-07-119588-004-0835ND
2017-10-039588-005-1103ND
2017-10-039588-002-1152ND
2017-10-039588-003-1048ND
2017-10-039588-004-1020ND