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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Appalachian State Univ WTP

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

 

103

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.69 ppb1612ND - 5.00 ppb
20152.00 ppb1610ND - 4.00 ppb
20160.375 ppb163ND - 2.00 ppb
20171.25 ppb164ND - 6.00 ppb
20182.22 ppb2315ND - 5.00 ppb
20190.813 ppb164ND - 4.00 ppb

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
2014-01-3137729_14-03136ND
2014-01-3137729_14-03137ND
2014-01-3137729_14-03138ND
2014-01-3137729_14-03139ND
2014-05-0537729_14-124194.00 ppb
2014-05-0537729_14-124202.00 ppb
2014-05-0537729_14-124213.00 ppb
2014-05-0537729_14-124222.00 ppb
2014-07-2837729_14-223424.00 ppb
2014-07-2837729_14-223434.00 ppb
2014-07-2837729_14-223445.00 ppb
2014-07-2837729_14-223454.00 ppb
2014-10-2137729_14-320424.00 ppb
2014-10-2137729_14-320434.00 ppb
2014-10-2137729_14-320444.00 ppb
2014-10-2137729_14-320453.00 ppb
2015-01-214.00 ppb
2015-01-213.00 ppb
2015-01-213.00 ppb
2015-01-213.00 ppb
2015-04-232.00 ppb
2015-04-23ND
2015-04-23ND
2015-04-232.00 ppb
2015-07-084.00 ppb
2015-07-084.00 ppb
2015-07-084.00 ppb
2015-07-083.00 ppb
2015-10-14ND
2015-10-14ND
2015-10-14ND
2015-10-14ND
2016-01-2837729_16-02841ND
2016-01-2837729_16-02842ND
2016-01-2837729_16-02843ND
2016-01-2837729_16-02844ND
2016-04-2737729_16-13166ND
2016-04-2737729_16-13163ND
2016-04-2737729_16-13164ND
2016-04-2737729_16-13165ND
2016-07-2637729_16-248082.00 ppb
2016-07-2637729_16-248092.00 ppb
2016-07-2637729_16-24810ND
2016-07-2637729_16-24811ND
2016-10-2637729_16-37449ND
2016-10-2637729_16-37450ND
2016-10-2637729_16-37451ND
2016-10-2637729_16-374522.00 ppb
2017-01-3037729_17-03333ND
2017-01-3137729_17-03334ND
2017-01-3137729_17-03335ND
2017-01-3137729_17-03336ND
2017-04-2637729_17-13855ND
2017-04-2637729_17-13856ND
2017-04-2637729_17-13857ND
2017-04-2637729_17-13858ND
2017-07-1837729_17-24781ND
2017-07-1837729_17-24782ND
2017-07-1837729_17-24783ND
2017-07-1837729_17-24784ND
2017-10-2537729_17-401706.00 ppb
2017-10-2537729_17-401716.00 ppb
2017-10-2537729_17-401722.00 ppb
2017-10-2537729_17-401736.00 ppb
2018-01-2537729_18-03304 2.00 ppb
2018-01-2537729_18-03305 ND
2018-01-2537729_18-03306 2.00 ppb
2018-01-2537729_18-03307 ND
2018-04-1037729_18-13909 4.00 ppb
2018-04-1037729_18-13910 4.00 ppb
2018-04-1037729_18-13911 4.00 ppb
2018-04-1037729_18-13912 4.00 ppb
2018-06-2737729_18-26233 4.00 ppb
2018-06-2737729_18-26234 4.00 ppb
2018-06-2737729_18-26235 5.00 ppb
2018-07-1937729_18-29589 3.00 ppb
2018-07-1937729_18-29590 4.00 ppb
2018-07-1937729_18-29591 3.00 ppb
2018-07-1937729_18-29592 4.00 ppb
2018-10-2337729_18-44087 2.00 ppb
2018-10-2337729_18-44088 ND
2018-10-2337729_18-44089 ND
2018-10-2337729_18-44090 2.00 ppb
2018-12-0537729_18-50959 ND
2018-12-0537729_18-50960 ND
2018-12-0537729_18-50961 ND
2018-12-0537729_18-50962 ND
2019-01-3037729_19-04371 ND
2019-01-3037729_19-04374 ND
2019-01-3037729_19-04375 ND
2019-01-3037729_19-04376 ND
2019-04-1037729_19-14814 ND
2019-04-1037729_19-14815 ND
2019-04-1037729_19-14816 ND
2019-04-1037729_19-14817 ND
2019-07-2337729_19-30874 ND
2019-07-2337729_19-30875 ND
2019-07-2337729_19-30876 ND
2019-07-2337729_19-30877 ND
2019-10-2237729_19-45545 4.00 ppb
2019-10-2237729_19-45546 3.00 ppb
2019-10-2237729_19-45547 3.00 ppb
2019-10-2237729_19-45548 3.00 ppb