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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Gallup 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

 

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
20140.228 ppb163ND - 1.70 ppb
2015ND160ND
20160.0556 ppb161ND - 0.890 ppb
20171.13 ppb169ND - 3.30 ppb
20180.909 ppb168ND - 3.50 ppb
20190.443 ppb165ND - 1.80 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
2014-01-242014002444ND
2014-01-242014002446ND
2014-01-242014002443ND
2014-01-242014002445ND
2014-04-162014012564ND
2014-04-162014012562ND
2014-04-162014012561ND
2014-04-162014012563ND
2014-07-0120140208321.70 ppb
2014-07-0120140208301.40 ppb
2014-07-0120140208330.550 ppb
2014-07-012014020831ND
2014-11-192014035740ND
2014-11-192014035737ND
2014-11-192014035738ND
2014-11-192014035739ND
2015-02-042015003902ND
2015-02-042015003904ND
2015-02-042015003903ND
2015-02-042015003901ND
2015-04-082015010916ND
2015-04-082015010915ND
2015-04-082015010917ND
2015-04-082015010918ND
2015-08-182015023949ND
2015-08-182015023952ND
2015-08-182015023951ND
2015-08-182015023950ND
2015-11-302015035102ND
2015-11-302015035104ND
2015-11-302015035105ND
2015-11-302015035103ND
2016-02-242016005288ND
2016-02-242016005289ND
2016-02-242016005291ND
2016-02-242016005290ND
2016-04-122016010326ND
2016-04-122016010325ND
2016-04-122016010324ND
2016-04-1220160103270.890 ppb
2016-07-192016020566ND
2016-07-192016020563ND
2016-07-192016020564ND
2016-07-192016020565ND
2016-10-252016030999ND
2016-10-252016030998ND
2016-10-252016031000ND
2016-10-252016031001ND
2017-01-1020170007291.60 ppb
2017-01-1020170007323.30 ppb
2017-01-1020170007312.70 ppb
2017-01-1020170007301.70 ppb
2017-04-0420170096381.20 ppb
2017-04-042017009637ND
2017-04-042017009636ND
2017-04-042017009635ND
2017-07-052017019174ND
2017-07-052017019171ND
2017-07-0520170191721.10 ppb
2017-07-0520170191731.20 ppb
2017-10-1120170292752.80 ppb
2017-10-1120170292742.50 ppb
2017-10-112017029276ND
2017-10-112017029277ND
2018-01-102018000973ND
2018-01-1020180009721.30 ppb
2018-01-102018000971ND
2018-01-1020180009702.10 ppb
2018-04-112018010264ND
2018-04-112018010261ND
2018-04-1120180102621.10 ppb
2018-04-1120180102630.960 ppb
2018-07-102018018728ND
2018-07-102018018727ND
2018-07-1020180187261.40 ppb
2018-07-1020180187250.780 ppb
2018-10-0420180284653.50 ppb
2018-10-042018028466ND
2018-10-042018028467ND
2018-10-0420180284683.40 ppb
2019-01-1020190007481.30 ppb
2019-01-102019000749ND
2019-01-102019000750ND
2019-01-102019000751ND
2019-04-092019008900ND
2019-04-092019008903ND
2019-04-092019008902ND
2019-04-092019008901ND
2019-07-0920190187321.80 ppb
2019-07-092019018734ND
2019-07-0920190187331.70 ppb
2019-07-092019018731ND
2019-10-102019029113ND
2019-10-102019029112ND
2019-10-1020190291110.880 ppb
2019-10-1020190291101.40 ppb