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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Green Valley SUD

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
2013N/A00N/A
2014ND160ND
20150.869 ppb163ND - 5.30 ppb
2016ND160ND
20170.231 ppb161ND - 3.70 ppb
2018ND160ND
20190.538 ppb161ND - 8.60 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
2014-02-19AC43551ND
2014-02-19AC43587ND
2014-02-19AC43559ND
2014-02-19AC43553ND
2014-04-03AC49227ND
2014-04-03AC49204ND
2014-04-03AC49207ND
2014-04-03AC49206ND
2014-07-14AC59615ND
2014-07-14AC59589ND
2014-07-14AC59608ND
2014-09-18AC67487ND
2014-11-11AC71727ND
2014-11-11AC71728ND
2014-11-11AC71725ND
2014-11-11AC71722ND
2015-01-27AC77880ND
2015-01-27AC77881ND
2015-01-27AC77917ND
2015-01-27AC779025.30 ppb
2015-04-15AC88350ND
2015-04-15AC88351ND
2015-04-15AC88352ND
2015-04-15AC88348ND
2015-07-22AD00612ND
2015-07-22AD00567ND
2015-07-22AD006093.90 ppb
2015-07-22AD006134.70 ppb
2015-11-20AD14377ND
2015-11-20AD14369ND
2015-11-20AD14370ND
2015-11-20AD14412ND
2016-01-20AD18886ND
2016-01-20AD18876ND
2016-01-20AD18888ND
2016-01-20AD18895ND
2016-04-06AD32012ND
2016-04-06AD32043ND
2016-04-06AD32014ND
2016-04-06AD32010ND
2016-09-16AD50012ND
2016-09-16AD50015ND
2016-09-16AD50057ND
2016-09-16AD50039ND
2016-11-03AD56440ND
2016-11-03AD56439ND
2016-11-03AD56438ND
2016-11-03AD56441ND
2017-01-30AD67513ND
2017-01-30AD67479ND
2017-01-30AD67512ND
2017-01-30AD674813.70 ppb
2017-04-20AD80344ND
2017-04-20AD80338ND
2017-04-20AD80341ND
2017-04-20AD80340ND
2017-08-16AD93375ND
2017-08-16AD93384ND
2017-08-16AD93373ND
2017-08-16AD93374ND
2017-12-08AE07401ND
2017-12-08AE07402ND
2017-12-08AE07403ND
2017-12-08AE07404ND
2018-01-26AE10953ND
2018-01-26AE10950ND
2018-01-26AE10951ND
2018-01-26AE10952ND
2018-04-18AE22988ND
2018-04-18AE22991ND
2018-04-18AE22990ND
2018-04-18AE22992ND
2018-08-16AE37354ND
2018-08-16AE37351ND
2018-08-16AE37352ND
2018-08-16AE37353ND
2018-10-03AE42520ND
2018-10-03AE42545ND
2018-10-03AE42527ND
2018-10-03AE42513ND
2019-02-05AE52855ND
2019-02-05AE528538.60 ppb
2019-02-05AE52870ND
2019-02-05AE52876ND
2019-04-11AE62005ND
2019-04-11AE61995ND
2019-04-11AE62023ND
2019-04-11AE61998ND
2019-08-01AE76765ND
2019-08-01AE76763ND
2019-08-01AE76762ND
2019-08-01AE76761ND
2019-10-15AE86615ND
2019-10-15AE86618ND
2019-10-15AE86614ND
2019-10-15AE86616ND