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EWG's Tap Water Database — 2019 UPDATE

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Trichloroacetic acid

City of Meridian

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND10ND
2013ND50ND
2014ND120ND
2015N/A00N/A
2016ND30ND
2017ND20ND

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
2012-06-06120607-014HAND
2013-06-12130613-004HAND
2013-11-20131121-004HAND
2013-11-20131121-003HAND
2013-11-20131121-002HAND
2013-11-20131121-001HAND
2014-02-17140218-008HAND
2014-02-17140218-007HAND
2014-02-17140218-006HAND
2014-02-17140218-005HAND
2014-05-19140520-007HAND
2014-05-19140520-008HAND
2014-05-19140520-006HAND
2014-05-19140520-005HAND
2014-08-20140821-013HAND
2014-08-20140821-005HAND
2014-08-20140821-004HAND
2014-10-02141003-001HAND
2016-06-28160629-004HAND
2016-11-30161201-014HAND
2016-11-30161201-013HAND
2017-08-01170802-005HAND
2017-08-01170802-006HAND