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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Golden

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

 

88

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
20150.446 ppb164ND - 1.86 ppb
20160.305 ppb204ND - 1.70 ppb
2017ND200ND
2018ND160ND
2019ND160ND

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 Result
2015-02-09ND
2015-02-09ND
2015-02-09ND
2015-02-09ND
2015-05-261.71 ppb
2015-05-261.86 ppb
2015-05-261.71 ppb
2015-05-261.86 ppb
2015-08-13ND
2015-08-13ND
2015-08-13ND
2015-08-13ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2015-11-18ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-05-12ND
2016-05-12ND
2016-05-12ND
2016-05-12ND
2016-08-081.30 ppb
2016-08-081.50 ppb
2016-08-081.70 ppb
2016-08-081.60 ppb
2016-11-10ND
2016-11-10ND
2016-11-10ND
2016-11-10ND
2016-11-10ND
2016-11-10ND
2016-11-10ND
2016-11-10ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-05-15ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-08-16ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2017-11-14ND
2018-02-13ND
2018-02-13ND
2018-02-13ND
2018-02-13ND
2018-05-16ND
2018-05-16ND
2018-05-16ND
2018-05-16ND
2018-08-13ND
2018-08-13ND
2018-08-13ND
2018-08-13ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-02-13ND
2019-05-14ND
2019-05-14ND
2019-05-14ND
2019-05-14ND
2019-08-12ND
2019-08-12ND
2019-08-12ND
2019-08-12ND
2019-11-14ND
2019-11-14ND
2019-11-14ND
2019-11-14ND