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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

Wickson Creek SUD

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

 

60

Samples

0

Samples exceeding legal limit (MCL)

36

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.03 ppb42ND - 2.10 ppb
20152.28 ppb881.20 ppb - 4.50 ppb
20161.41 ppb85ND - 3.30 ppb
20170.188 ppb81ND - 1.50 ppb
20181.24 ppb169ND - 5.20 ppb
20191.69 ppb1611ND - 9.80 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
2014-08-05AC62191ND
2014-08-05AC621872.00 ppb
2014-10-14AC696622.10 ppb
2014-10-14AC69659ND
2015-03-03AC825151.60 ppb
2015-03-03AC825171.30 ppb
2015-06-18AC965674.50 ppb
2015-06-18AC965751.20 ppb
2015-09-11AD068482.20 ppb
2015-09-11AD068592.50 ppb
2015-11-09AD129633.00 ppb
2015-11-09AD129611.90 ppb
2016-03-15AD287783.30 ppb
2016-03-15AD287811.80 ppb
2016-06-01AD389052.20 ppb
2016-06-01AD389242.20 ppb
2016-09-19AD49998ND
2016-09-19AD499971.80 ppb
2016-12-07AD60883ND
2016-12-07AD60885ND
2017-02-01AD68085ND
2017-02-01AD68046ND
2017-04-20AD80372ND
2017-04-20AD803691.50 ppb
2017-08-15AD93048ND
2017-08-15AD93049ND
2017-10-17AE01075ND
2017-10-17AE01053ND
2018-03-08AE175091.10 ppb
2018-03-08AE17505ND
2018-03-08AE175062.40 ppb
2018-03-08AE175021.000 ppb
2018-05-08AE25541ND
2018-05-08AE25542ND
2018-05-08AE255402.50 ppb
2018-05-08AE25543ND
2018-07-25AE34468ND
2018-07-25AE344501.000 ppb
2018-07-25AE344525.20 ppb
2018-07-25AE344711.000 ppb
2018-10-24AE444371.70 ppb
2018-10-24AE44438ND
2018-10-24AE444413.90 ppb
2018-10-24AE44434ND
2019-01-18AE505671.000 ppb
2019-01-18AE50571ND
2019-01-18AE505649.80 ppb
2019-01-18AE50566ND
2019-04-10AE617652.00 ppb
2019-04-10AE617671.80 ppb
2019-04-10AE617662.90 ppb
2019-04-10AE617711.70 ppb
2019-07-17AE74826ND
2019-07-17AE74820ND
2019-07-17AE748032.40 ppb
2019-07-17AE74791ND
2019-10-02AE854921.000 ppb
2019-10-02AE854821.80 ppb
2019-10-02AE854831.000 ppb
2019-10-02AE855041.60 ppb