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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Mitchell County Rural Water District 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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20125.10 ppb442.20 ppb - 11.0 ppb
20130.525 ppb41ND - 2.10 ppb
20142.85 ppb42ND - 8.80 ppb
20150.825 ppb41ND - 3.30 ppb
20161.35 ppb42ND - 2.70 ppb
20171.70 ppb42ND - 3.80 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
2012-03-06576182DF4.00 ppb
2012-05-14578887DF3.20 ppb
2012-08-20584322DF2.20 ppb
2012-12-03588403DF11.0 ppb
2013-02-26592800DFND
2013-05-20596431DF2.10 ppb
2013-08-19601873DFND
2013-10-15604649DFND
2014-02-1060090ND
2014-05-051098152.60 ppb
2014-08-111715448.80 ppb
2014-11-11230352ND
2015-02-23284208ND
2015-05-113318423.30 ppb
2015-08-24393559ND
2015-11-16427870ND
2016-02-16494816ND
2016-05-10545050ND
2016-08-226087432.70 ppb
2016-11-286655872.70 ppb
2017-02-13707667ND
2017-05-30769024ND
2017-08-288290073.00 ppb
2017-11-288838533.80 ppb