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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

El Paso Water Company

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
20140.275 ppb162ND - 2.30 ppb
20152.19 ppb162ND - 18.0 ppb
20160.194 ppb161ND - 3.10 ppb
20170.306 ppb162ND - 2.90 ppb
20180.638 ppb164ND - 2.60 ppb
2019ND160ND

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
2014-02-11607162.30 ppb
2014-02-11607132.10 ppb
2014-02-1160701ND
2014-02-1160692ND
2014-05-05109166ND
2014-05-05109165ND
2014-05-05109164ND
2014-05-05109163ND
2014-08-05167797ND
2014-08-05167798ND
2014-08-05167799ND
2014-08-05167800ND
2014-11-02223423ND
2014-11-02223422ND
2014-11-02223421ND
2014-11-02223408ND
2015-02-02271317ND
2015-02-02271316ND
2015-02-02271315ND
2015-02-02271314ND
2015-05-04328550ND
2015-05-04328548ND
2015-05-04328547ND
2015-05-18335005ND
2015-08-0337826217.0 ppb
2015-08-03378261ND
2015-08-03378260ND
2015-08-0337825918.0 ppb
2015-11-09427795ND
2015-11-09427794ND
2015-11-09427793ND
2015-11-09427792ND
2016-02-22497246ND
2016-02-22497247ND
2016-02-22497248ND
2016-02-22497249ND
2016-05-03538279ND
2016-05-03538278ND
2016-05-03538277ND
2016-05-03538276ND
2016-08-156042083.10 ppb
2016-08-15604207ND
2016-08-15604206ND
2016-08-15604205ND
2016-11-14660089ND
2016-11-14660092ND
2016-11-14660091ND
2016-11-14660090ND
2017-02-067048182.00 ppb
2017-02-06704817ND
2017-02-06704816ND
2017-02-06704815ND
2017-05-08753565ND
2017-05-08753564ND
2017-05-08753563ND
2017-05-08753562ND
2017-08-14819715ND
2017-08-14819714ND
2017-08-14819716ND
2017-08-14819717ND
2017-11-06872507ND
2017-11-06872506ND
2017-11-068725052.90 ppb
2017-11-06872504ND
2018-02-069066852.50 ppb
2018-02-069066842.50 ppb
2018-02-069066832.60 ppb
2018-02-069066822.60 ppb
2018-05-14970867ND
2018-05-14970868ND
2018-05-14970870ND
2018-05-14970869ND
2018-08-071022058ND
2018-08-071022057ND
2018-08-071022056ND
2018-08-071022055ND
2018-11-051074000ND
2018-11-051073999ND
2018-11-051073998ND
2018-11-051073997ND
2019-02-121121013ND
2019-02-121121012ND
2019-02-121121014ND
2019-02-121121015ND
2019-05-061157230ND
2019-05-061157229ND
2019-05-061157228ND
2019-05-061157227ND
2019-08-051216296ND
2019-08-051216295ND
2019-08-051216294ND
2019-08-051216293ND
2019-11-041268764ND
2019-11-041268767ND
2019-11-041268766ND
2019-11-041268765ND