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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Rathbun Regional Water Assn

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.

 

96

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
2013ND160ND
2014ND160ND
20150.375 ppb163ND - 2.00 ppb
20160.375 ppb163ND - 2.00 ppb
20170.125 ppb161ND - 2.00 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
2012-03-061891051ND
2012-03-061891052ND
2012-03-061891053ND
2012-03-061891119ND
2012-06-041907879ND
2012-06-041907871ND
2012-06-041907894ND
2012-06-041907872ND
2012-09-101929956ND
2012-09-101929957ND
2012-09-101929955ND
2012-09-101929954ND
2012-12-031950370ND
2012-12-031950369ND
2012-12-031950371ND
2012-12-031950368ND
2013-03-041965775ND
2013-03-041965774ND
2013-03-041965777ND
2013-03-041965776ND
2013-06-111983789ND
2013-06-111983787ND
2013-06-111983790ND
2013-06-111983788ND
2013-07-161992395ND
2013-07-161992396ND
2013-07-161992397ND
2013-07-161992393ND
2013-10-092010248ND
2013-10-092010250ND
2013-10-092010252ND
2013-10-092010253ND
2014-01-082028339ND
2014-01-082028338ND
2014-01-082028337ND
2014-01-082028336ND
2014-04-022043712ND
2014-04-022043711ND
2014-04-022043710ND
2014-04-022043709ND
2014-07-082062160ND
2014-07-082062156ND
2014-07-082062157ND
2014-07-082062158ND
2014-10-082085109ND
2014-10-082085399ND
2014-10-082085405ND
2014-10-082085102ND
2015-01-13OE210146ND
2015-01-13OE2101472.00 ppb
2015-01-13OE210144ND
2015-01-13OE210145ND
2015-04-06OE2285742.00 ppb
2015-04-06OE228572ND
2015-04-06OE228571ND
2015-04-06OE2285732.00 ppb
2015-07-06OE264418ND
2015-07-06OE264416ND
2015-07-06OE264419ND
2015-07-06OE264417ND
2015-10-06OE303498ND
2015-10-06OE303497ND
2015-10-06OE303500ND
2015-10-06OE303499ND
2016-01-12OE335724ND
2016-01-12OE3357252.00 ppb
2016-01-12OE335726ND
2016-01-12OE335727ND
2016-04-05OE363083ND
2016-04-05OE363082ND
2016-04-05OE363080ND
2016-04-05OE363081ND
2016-07-07OE3986062.00 ppb
2016-07-07OE398604ND
2016-07-07OE3986072.00 ppb
2016-07-07OE398605ND
2016-10-05OE438010ND
2016-10-05OE438008ND
2016-10-05OE438009ND
2016-10-05OE438011ND
2017-01-18OE471873ND
2017-01-18OE471874ND
2017-01-18OE471871ND
2017-01-18OE471872ND
2017-04-11OE501304ND
2017-04-11OE501306ND
2017-04-11OE501305ND
2017-04-13OE502012ND
2017-07-11OE535200ND
2017-07-11OE535199ND
2017-07-11OE535201ND
2017-07-11OE535198ND
2017-10-10OE576455ND
2017-10-10OE576457ND
2017-10-10OE576456ND
2017-10-10OE5764582.00 ppb