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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Dayton Public 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

 

100

Samples

0

Samples exceeding legal limit (MCL)

25

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.0458 ppb241ND - 1.10 ppb
20150.0688 ppb161ND - 1.10 ppb
20160.473 ppb166ND - 1.60 ppb
20170.563 ppb168ND - 1.50 ppb
20180.350 ppb165ND - 1.40 ppb
20190.450 ppb124ND - 1.50 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
2014-03-06A140183054ND
2014-03-06A140183053ND
2014-03-06A140183052ND
2014-03-06A140183051ND
2014-03-06A140183050ND
2014-03-06A140183049ND
2014-03-06A140147790ND
2014-03-06A140147789ND
2014-06-05A1401830621.10 ppb
2014-06-05A140183061ND
2014-06-05A140183060ND
2014-06-05A140183063ND
2014-06-05A140183064ND
2014-06-05A140183059ND
2014-06-05A140183058ND
2014-06-05A140183065ND
2014-09-04A140216641ND
2014-09-04A140216638ND
2014-09-04A140216639ND
2014-09-04A140216640ND
2014-12-04A140216642ND
2014-12-04A140216643ND
2014-12-04A140216644ND
2014-12-04A140216645ND
2015-03-03A150231560ND
2015-03-03A150231561ND
2015-03-03A150231562ND
2015-03-03A150231563ND
2015-06-04A150216647ND
2015-06-04A150216649ND
2015-06-04A150216648ND
2015-06-04A150216646ND
2015-09-01A150231567ND
2015-09-01A150231569ND
2015-09-01A150231568ND
2015-09-01A150231566ND
2015-12-10A1503538921.10 ppb
2015-12-10A150353893ND
2015-12-10A150353891ND
2015-12-10A150353890ND
2016-03-0216C0101-01ND
2016-03-0216C0101-02ND
2016-03-0216C0101-03ND
2016-03-0216C0101-04ND
2016-06-0116F0021-01ND
2016-06-0116F0021-021.12 ppb
2016-06-0116F0021-031.60 ppb
2016-06-0116F0021-04ND
2016-09-0616I0342-041.20 ppb
2016-09-0616I0342-031.47 ppb
2016-09-0616I0342-011.13 ppb
2016-09-0616I0342-021.04 ppb
2016-12-0516L0243-01ND
2016-12-0516L0243-02ND
2016-12-0516L0243-03ND
2016-12-0516L0243-04ND
2017-03-02A170476876ND
2017-03-02A170476879ND
2017-03-02A170476878ND
2017-03-02A170476877ND
2017-06-01A170476882ND
2017-06-01A1704768831.20 ppb
2017-06-01A1704768841.50 ppb
2017-06-01A170476885ND
2017-09-06A1704768871.000 ppb
2017-09-06A1704768891.10 ppb
2017-09-06A170476888ND
2017-09-06A1704768861.10 ppb
2017-12-06A1702856421.000 ppb
2017-12-06A170532937ND
2017-12-06A1705329381.10 ppb
2017-12-06A1702856411.000 ppb
2018-03-07A180548386ND
2018-03-07A180548389ND
2018-03-07A1805483881.20 ppb
2018-03-07A1805483871.000 ppb
2018-06-06A180578417ND
2018-06-06A180578418ND
2018-06-06A180578419ND
2018-06-06A180578420ND
2018-09-05A180578422ND
2018-09-05A1805784231.000 ppb
2018-09-05A180578424ND
2018-09-05A180578421ND
2018-12-058L00914-03ND
2018-12-058L00914-02ND
2018-12-058L00914-011.40 ppb
2018-12-058L00912-011.000 ppb
2019-03-049C00661-01ND
2019-03-049C00661-031.40 ppb
2019-03-049C00661-04ND
2019-03-059C00661-02ND
2019-06-059F01250-01ND
2019-06-059F01250-02ND
2019-06-059F01250-03ND
2019-06-059F01250-04ND
2019-09-049I01015-01ND
2019-09-049I01015-021.50 ppb
2019-09-049I01015-031.30 ppb
2019-09-049I01015-041.20 ppb