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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Norman

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
2015ND160ND
2016ND160ND
2017ND160ND
20180.127 ppb161ND - 2.03 ppb
20190.374 ppb162ND - 3.70 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
2014-02-131277689ND
2014-02-131277688ND
2014-02-131277687ND
2014-02-131277686ND
2014-04-241296258ND
2014-04-241296256ND
2014-04-241296254ND
2014-04-241296252ND
2014-08-121325996ND
2014-08-121325993ND
2014-08-121325998ND
2014-08-121326000ND
2014-11-121350559ND
2014-11-121350558ND
2014-11-121350557ND
2014-11-121350556ND
2015-02-101371591ND
2015-02-101371589ND
2015-02-101371587ND
2015-02-101371584ND
2015-05-121394887ND
2015-05-121394889ND
2015-05-121394893ND
2015-05-121394891ND
2015-08-111418110ND
2015-08-111418109ND
2015-08-111418108ND
2015-08-111418107ND
2015-11-121443987ND
2015-11-121443985ND
2015-11-121443983ND
2015-11-121443981ND
2016-02-091466166ND
2016-02-091466165ND
2016-02-091466167ND
2016-02-091466168ND
2016-05-101490259ND
2016-05-101490252ND
2016-05-101490250ND
2016-05-101490248ND
2016-08-091515052ND
2016-08-091515050ND
2016-08-091515048ND
2016-08-091515046ND
2016-11-071538931ND
2016-11-071538971ND
2016-11-071538970ND
2016-11-071538969ND
2017-02-071562353ND
2017-02-071562351ND
2017-02-071562349ND
2017-02-071562346ND
2017-05-081586439ND
2017-05-081586438ND
2017-05-081586437ND
2017-05-081586432ND
2017-08-081612123ND
2017-08-081612121ND
2017-08-081612125ND
2017-08-081612127ND
2017-11-081637819ND
2017-11-081637817ND
2017-11-081637815ND
2017-11-081637813ND
2018-02-06AB08094-04ND
2018-02-06AB08094-03ND
2018-02-06AB08094-02ND
2018-02-06AB08094-01ND
2018-05-081683186ND
2018-05-081683188ND
2018-05-081683192ND
2018-05-081683190ND
2018-08-08AH09145-04ND
2018-08-08AH09145-03ND
2018-08-08AH09145-02ND
2018-08-08AH09145-012.03 ppb
2018-11-07AK07223-04ND
2018-11-07AK07223-03ND
2018-11-07AK07223-02ND
2018-11-07AK07223-01ND
2019-02-04BB07048-023.70 ppb
2019-02-04BB07048-01ND
2019-02-04BB07048-032.29 ppb
2019-02-04BB07048-04ND
2019-05-06BE07154-04ND
2019-05-06BE07154-03ND
2019-05-06BE07154-02ND
2019-05-06BE07154-01ND
2019-08-07BH08060-04ND
2019-08-07BH08060-03ND
2019-08-07BH08060-02ND
2019-08-07BH08060-01ND
2019-11-04BK07062-01ND
2019-11-04BK07062-04ND
2019-11-04BK07062-03ND
2019-11-04BK07062-02RE1ND