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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Monroe Water System

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

 

93

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
20140.806 ppb165ND - 2.90 ppb
20150.267 ppb121ND - 3.20 ppb
20160.544 ppb164ND - 2.30 ppb
20170.869 ppb165ND - 3.30 ppb
20180.459 ppb173ND - 3.00 ppb
20191.84 ppb1610ND - 5.10 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
2014-02-1106097ND
2014-02-1106095ND
2014-02-1106096ND
2014-02-1106094ND
2014-05-2021440ND
2014-05-2021441ND
2014-05-2021442ND
2014-05-2021443ND
2014-08-1335724ND
2014-08-13357262.30 ppb
2014-08-13357272.50 ppb
2014-08-13357252.40 ppb
2014-11-17510612.90 ppb
2014-11-1751058ND
2014-11-1751059ND
2014-11-17510602.80 ppb
2015-02-10058803.20 ppb
2015-02-1005881ND
2015-02-1005882ND
2015-02-1005883ND
2015-05-2723702ND
2015-05-2723703ND
2015-05-2723704ND
2015-05-2723701ND
2015-08-1938883ND
2015-08-1938886ND
2015-08-1938884ND
2015-08-1938885ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-02-10ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-05-17ND
2016-08-10ND
2016-08-10ND
2016-08-10ND
2016-08-10ND
2016-11-092.30 ppb
2016-11-092.10 ppb
2016-11-092.20 ppb
2016-11-092.10 ppb
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-02-08ND
2017-05-10ND
2017-05-103.10 ppb
2017-05-103.00 ppb
2017-05-103.30 ppb
2017-08-21ND
2017-08-21ND
2017-08-21ND
2017-08-21ND
2017-11-01ND
2017-11-012.10 ppb
2017-11-012.40 ppb
2017-11-01ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-02-21ND
2018-05-09ND
2018-05-092.70 ppb
2018-05-092.10 ppb
2018-05-093.00 ppb
2018-08-08ND
2018-08-08ND
2018-08-08ND
2018-08-08ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2018-11-14ND
2019-02-26ND
2019-02-26ND
2019-02-26ND
2019-02-26ND
2019-05-063.00 ppb
2019-05-063.40 ppb
2019-05-062.20 ppb
2019-05-065.10 ppb
2019-08-132.90 ppb
2019-08-132.80 ppb
2019-08-133.00 ppb
2019-08-13ND
2019-11-142.50 ppb
2019-11-142.20 ppb
2019-11-142.40 ppb
2019-11-14ND