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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Mount Airy

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

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.00 ppb1611ND - 4.00 ppb
20150.938 ppb164ND - 4.00 ppb
20160.125 ppb161ND - 2.00 ppb
20170.625 ppb163ND - 4.00 ppb
20181.88 ppb168ND - 6.00 ppb
20190.625 ppb164ND - 3.00 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
2014-02-2037729_14-05068ND
2014-02-2037729_14-05069ND
2014-02-2037729_14-050702.00 ppb
2014-02-2037729_14-05067ND
2014-05-2937729_14-15144ND
2014-05-2937729_14-151453.00 ppb
2014-05-2937729_14-151463.00 ppb
2014-05-2937729_14-151473.00 ppb
2014-08-2137729_14-254623.00 ppb
2014-08-2137729_14-254633.00 ppb
2014-08-2137729_14-254643.00 ppb
2014-08-2137729_14-254654.00 ppb
2014-11-2037729_14-354803.00 ppb
2014-11-2037729_14-35481ND
2014-11-2037729_14-354792.00 ppb
2014-11-2037729_14-354783.00 ppb
2015-02-25ND
2015-02-25ND
2015-02-25ND
2015-02-25ND
2015-05-214.00 ppb
2015-05-214.00 ppb
2015-05-213.00 ppb
2015-05-214.00 ppb
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-08-20ND
2015-11-19ND
2015-11-19ND
2015-11-19ND
2015-11-19ND
2016-02-1837729_16-05307ND
2016-02-1837729_16-05306ND
2016-02-1837729_16-05305ND
2016-02-1837729_16-05304ND
2016-05-1937729_16-15869ND
2016-05-1937729_16-158682.00 ppb
2016-05-1937729_16-15864ND
2016-05-1937729_16-15860ND
2016-08-1837729_16-28547ND
2016-08-1837729_16-28550ND
2016-08-1837729_16-28552ND
2016-08-1837729_16-28553ND
2016-11-1837729_16-40609ND
2016-11-1837729_16-40610ND
2016-11-1837729_16-40611ND
2016-11-1837729_16-40612ND
2017-02-2337729_17-06330ND
2017-02-2337729_17-06333ND
2017-02-2337729_17-06331ND
2017-02-2337729_17-06332ND
2017-05-1837729_17-16615ND
2017-05-1837729_17-16616ND
2017-05-1837729_17-16617ND
2017-05-1837729_17-16618ND
2017-08-2437729_17-30588ND
2017-08-2437729_17-30587ND
2017-08-2437729_17-30586ND
2017-08-2437729_17-305854.00 ppb
2017-11-1637729_17-43435ND
2017-11-1637729_17-43436ND
2017-11-1637729_17-434373.00 ppb
2017-11-1637729_17-434383.00 ppb
2018-02-2237729_18-07232 2.00 ppb
2018-02-2237729_18-07231 2.00 ppb
2018-02-2237729_18-07230 2.00 ppb
2018-02-2237729_18-07229 2.00 ppb
2018-05-2437729_18-20625 5.00 ppb
2018-05-2437729_18-20622 6.00 ppb
2018-05-2437729_18-20623 5.00 ppb
2018-05-2437729_18-20624 6.00 ppb
2018-08-2337729_18-35310 ND
2018-08-2337729_18-35309 ND
2018-08-2337729_18-35308 ND
2018-08-2337729_18-35306 ND
2018-11-1537729_18-48163 ND
2018-11-1537729_18-48164 ND
2018-11-1537729_18-48165 ND
2018-11-1537729_18-48166 ND
2019-02-2137729_19-07549 ND
2019-02-2137729_19-07550 ND
2019-02-2137729_19-07551 ND
2019-02-2137729_19-07552 ND
2019-05-2337729_19-21135 ND
2019-05-2337729_19-21138 2.00 ppb
2019-05-2337729_19-21137 ND
2019-05-2337729_19-21136 ND
2019-08-2237729_19-36236 ND
2019-08-2237729_19-36238 3.00 ppb
2019-08-2237729_19-36237 2.00 ppb
2019-08-2237729_19-36235 3.00 ppb
2019-11-2137729_19-50089 ND
2019-11-2137729_19-50088 ND
2019-11-2137729_19-50087 ND
2019-11-2137729_19-50086 ND