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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Kent Water Department

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

 

112

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20142.77 ppb3225ND - 19.5 ppb
20151.60 ppb1613ND - 4.80 ppb
20162.44 ppb16160.600 ppb - 4.50 ppb
20170.647 ppb1612ND - 1.82 ppb
20180.583 ppb165ND - 2.81 ppb
20191.04 ppb169ND - 4.47 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
2014-03-03027502.60 ppb
2014-03-03027523.95 ppb
2014-03-03027512.13 ppb
2014-03-03027551.09 ppb
2014-03-03027561.41 ppb
2014-03-03027531.72 ppb
2014-03-03027571.28 ppb
2014-03-03027541.16 ppb
2014-06-02079991.25 ppb
2014-06-0208003ND
2014-06-0208001ND
2014-06-02080001.56 ppb
2014-06-02079961.24 ppb
2014-06-02079970.930 ppb
2014-06-02079980.720 ppb
2014-06-0208002ND
2014-09-08143872.21 ppb
2014-09-08143842.20 ppb
2014-09-08143834.52 ppb
2014-09-08143825.75 ppb
2014-09-081438619.5 ppb
2014-09-08143802.11 ppb
2014-09-08143813.88 ppb
2014-09-081438514.0 ppb
2014-12-01190501.27 ppb
2014-12-0119049ND
2014-12-01190459.94 ppb
2014-12-01190520.950 ppb
2014-12-0119048ND
2014-12-0119051ND
2014-12-0119047ND
2014-12-01190461.13 ppb
2015-03-0202782ND
2015-03-0202781ND
2015-03-0202783ND
2015-03-02027800.510 ppb
2015-06-01083890.500 ppb
2015-06-01083861.03 ppb
2015-06-01083870.500 ppb
2015-06-01083883.36 ppb
2015-09-08146574.80 ppb
2015-09-08146610.940 ppb
2015-09-08146622.05 ppb
2015-09-08146592.25 ppb
2015-12-01192254.14 ppb
2015-12-01192241.11 ppb
2015-12-01192262.72 ppb
2015-12-01192231.62 ppb
2016-03-010.900 ppb
2016-03-011.39 ppb
2016-03-011.10 ppb
2016-03-014.10 ppb
2016-06-070.600 ppb
2016-06-071.77 ppb
2016-06-071.05 ppb
2016-06-071.70 ppb
2016-09-062.44 ppb
2016-09-062.70 ppb
2016-09-064.50 ppb
2016-09-062.45 ppb
2016-12-064.24 ppb
2016-12-064.07 ppb
2016-12-064.31 ppb
2016-12-061.69 ppb
2017-03-070.640 ppb
2017-03-07ND
2017-03-07ND
2017-03-070.600 ppb
2017-06-060.860 ppb
2017-06-060.840 ppb
2017-06-061.18 ppb
2017-06-060.740 ppb
2017-09-050.530 ppb
2017-09-050.680 ppb
2017-09-050.500 ppb
2017-09-05ND
2017-12-050.680 ppb
2017-12-051.28 ppb
2017-12-05ND
2017-12-051.82 ppb
2018-03-060.740 ppb
2018-03-06ND
2018-03-06ND
2018-03-06ND
2018-06-05ND
2018-06-05ND
2018-06-05ND
2018-06-05ND
2018-09-042.81 ppb
2018-09-041.57 ppb
2018-09-042.42 ppb
2018-09-041.78 ppb
2018-12-04ND
2018-12-04ND
2018-12-04ND
2018-12-04ND
2019-03-052.48 ppb
2019-03-05ND
2019-03-05ND
2019-03-05ND
2019-06-04ND
2019-06-041.21 ppb
2019-06-04ND
2019-06-041.11 ppb
2019-09-031.37 ppb
2019-09-031.58 ppb
2019-09-03ND
2019-09-03ND
2019-12-031.21 ppb
2019-12-032.26 ppb
2019-12-031.000 ppb
2019-12-034.47 ppb