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EWG's Tap Water Database — 2021 UPDATE

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Trichloroacetic acid

City of Wasco

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

 

82

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND160ND
2015ND160ND
20160.625 ppb166ND - 2.90 ppb
20170.394 ppb165ND - 1.30 ppb
2018ND160ND
2019ND20ND

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
2014-01-135806-900-1142ND
2014-01-135806-901-1210ND
2014-01-135806-902-1122ND
2014-01-135806-903-1155ND
2014-04-155806-900-0820ND
2014-04-155806-901-0745ND
2014-04-155806-902-0838ND
2014-04-155806-903-0805ND
2014-07-155806-902-0848ND
2014-07-155806-901-0902ND
2014-07-155806-903-0915ND
2014-07-155806-900-0930ND
2014-10-085806-902-1052ND
2014-10-085806-901-1107ND
2014-10-085806-903-1125ND
2014-10-085806-900-1140ND
2015-01-205806-903-0846ND
2015-01-205806-902-0816ND
2015-01-205806-901-0831ND
2015-01-205806-900-0858ND
2015-04-145806-903-0950ND
2015-04-145806-902-0841ND
2015-04-145806-900-1006ND
2015-04-145806-901-0930ND
2015-07-145806-900-0829ND
2015-07-145806-901-0759ND
2015-07-145806-903-0816ND
2015-07-145806-902-0743ND
2015-10-225806-903-0812ND
2015-10-225806-900-0826ND
2015-10-225806-901-0753ND
2015-10-225806-902-0733ND
2016-01-215806-901-0822ND
2016-01-215806-900-0849ND
2016-01-215806-902-0807ND
2016-01-215806-903-0837ND
2016-04-195806-901-0811ND
2016-04-195806-902-0743ND
2016-04-195806-903-0825ND
2016-04-195806-900-0838ND
2016-07-195806-900-08472.90 ppb
2016-07-195806-903-08311.000 ppb
2016-07-195806-902-08001.30 ppb
2016-07-195806-901-08151.80 ppb
2016-10-185806-900-08411.50 ppb
2016-10-185806-903-0823ND
2016-10-185806-902-07521.50 ppb
2016-10-185806-901-0808ND
2017-01-185806-900-1041ND
2017-01-185806-903-10251.20 ppb
2017-01-185806-901-0959ND
2017-01-185806-902-09411.20 ppb
2017-04-195806-901-0905ND
2017-04-195806-902-08501.30 ppb
2017-04-195806-903-09231.30 ppb
2017-04-195806-900-09381.30 ppb
2017-07-205806-902-0714ND
2017-07-205806-901-0730ND
2017-07-205806-903-0758ND
2017-07-205806-900-0815ND
2017-10-265806-903-1003ND
2017-10-265806-901-0945ND
2017-10-265806-902-0828ND
2017-10-265806-900-1028ND
2018-01-175806-901-0818ND
2018-01-175806-900-0847ND
2018-01-175806-903-0834ND
2018-01-175806-902-0759ND
2018-04-175806-901-0827ND
2018-04-175806-900-0756ND
2018-04-175806-903-0913ND
2018-04-175806-902-0844ND
2018-07-195806-900-0745ND
2018-07-195806-903-0730ND
2018-07-195806-902-0653ND
2018-07-195806-901-0711ND
2018-10-185806-900-0845ND
2018-10-185806-903-0829ND
2018-10-185806-902-0740ND
2018-10-185806-901-0802ND
2019-10-175806-903-1136ND
2019-10-175806-902-1036ND