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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

East Cherry Creek Valley Water and Sanitation District

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

 

120

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
20150.381 ppb248ND - 1.34 ppb
20160.128 ppb323ND - 1.50 ppb
2017ND320ND
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
2015-05-071.20 ppb
2015-05-071.02 ppb
2015-05-071.15 ppb
2015-05-071.34 ppb
2015-05-071.12 ppb
2015-05-071.04 ppb
2015-05-071.10 ppb
2015-05-071.18 ppb
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-08-12ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2015-11-23ND
2016-02-12ND
2016-02-12ND
2016-02-12ND
2016-02-12ND
2016-02-12ND
2016-02-12ND
2016-02-12ND
2016-02-12ND
2016-05-19ND
2016-05-19ND
2016-05-19ND
2016-05-19ND
2016-05-19ND
2016-05-19ND
2016-05-19ND
2016-05-19ND
2016-08-19ND
2016-08-19ND
2016-08-19ND
2016-08-19ND
2016-08-19ND
2016-08-19ND
2016-08-19ND
2016-08-19ND
2016-11-031.30 ppb
2016-11-03ND
2016-11-03ND
2016-11-031.30 ppb
2016-11-031.50 ppb
2016-11-03ND
2016-11-03ND
2016-11-03ND
2017-02-09ND
2017-02-09ND
2017-02-09ND
2017-02-09ND
2017-02-09ND
2017-02-09ND
2017-02-09ND
2017-02-09ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-05-17ND
2017-08-10ND
2017-08-10ND
2017-08-10ND
2017-08-10ND
2017-08-10ND
2017-08-10ND
2017-08-10ND
2017-08-10ND
2017-11-09ND
2017-11-09ND
2017-11-09ND
2017-11-09ND
2017-11-09ND
2017-11-09ND
2017-11-09ND
2017-11-10ND
2018-02-07ND
2018-02-07ND
2018-02-07ND
2018-02-07ND
2018-02-07ND
2018-02-07ND
2018-02-07ND
2018-02-07ND
2018-05-17ND
2018-05-17ND
2018-05-17ND
2018-05-17ND
2018-05-17ND
2018-05-17ND
2018-05-17ND
2018-05-17ND
2019-08-19ND
2019-08-19ND
2019-08-19ND
2019-08-19ND
2019-08-19ND
2019-08-19ND
2019-08-19ND
2019-08-19ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND
2019-11-13ND