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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Spokane County Water District 3, Sys 2

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

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND70ND
2015ND110ND
2016ND80ND
2017ND20ND
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
2014-06-2699639ND
2014-06-2799643ND
2014-06-2799642ND
2014-06-2799644ND
2014-11-1855089ND
2014-11-1855091ND
2014-11-1855087ND
2015-03-0357949ND
2015-03-0357954ND
2015-03-0357963ND
2015-07-1462818ND
2015-07-1462814ND
2015-07-1462816ND
2015-07-2163117ND
2015-10-0690042ND
2015-10-0690041ND
2015-10-0690043ND
2015-10-0690044ND
2016-01-12ND
2016-01-12ND
2016-01-12ND
2016-01-12ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2016-04-05ND
2017-11-14ND
2017-11-14ND
2018-11-13ND
2018-11-13ND
2019-11-19ND
2019-11-19ND