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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Cheney, City of

Monochloroacetic 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

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND120ND
2016ND60ND
2017N/A00N/A
2018ND20ND
2019ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic 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.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-0697694ND
2014-03-0697691ND
2014-03-0697692ND
2014-03-0697693ND
2014-05-2800574ND
2014-05-2800573ND
2014-05-2800571ND
2014-05-2800572ND
2014-11-2007041ND
2014-11-2007044ND
2014-11-2007042ND
2014-11-2007043ND
2015-03-2010691ND
2015-03-2010694ND
2015-03-2010692ND
2015-03-2010693ND
2015-05-1212323ND
2015-05-1212321ND
2015-05-1212324ND
2015-05-1212322ND
2015-08-2615644ND
2015-08-2615641ND
2015-08-2615643ND
2015-08-2615642ND
2016-02-11ND
2016-02-11ND
2016-02-11ND
2016-02-11ND
2016-08-16ND
2016-08-16ND
2018-08-21ND
2018-08-21ND
2019-08-23ND
2019-08-23ND