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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of South Sioux City

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

 

62

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND140ND
2016ND80ND
20170.461 ppb81ND - 3.69 ppb
2018ND80ND
2019ND80ND

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
2014-01-14283265ND
2014-01-14283264ND
2014-01-14283262ND
2014-01-14283263ND
2014-04-14294673ND
2014-04-14294674ND
2014-04-14294675ND
2014-04-14294672ND
2014-07-14311912ND
2014-07-14311913ND
2014-07-14311914ND
2014-07-14311915ND
2014-10-15330663ND
2014-10-15330662ND
2014-10-15330665ND
2014-10-15330664ND
2015-01-12344863ND
2015-01-12344864ND
2015-01-12344865ND
2015-01-12344862ND
2015-04-13357458ND
2015-04-13357456ND
2015-04-13357457ND
2015-04-13357455ND
2015-07-13374496ND
2015-07-13374497ND
2015-07-13374498ND
2015-07-13374499ND
2015-10-13393503ND
2015-10-13393504ND
2016-01-12ND
2016-01-12ND
2016-04-11ND
2016-04-11ND
2016-07-12ND
2016-07-12ND
2016-10-11ND
2016-10-11ND
2017-01-09ND
2017-01-09ND
2017-04-10ND
2017-04-10ND
2017-07-103.69 ppb
2017-07-10ND
2017-10-10ND
2017-10-10ND
2018-01-09532070ND
2018-01-09532069ND
2018-04-09543808ND
2018-04-09543807ND
2018-07-09561584ND
2018-07-09561583ND
2018-10-10578332ND
2018-10-10578331ND
2019-01-07590604ND
2019-01-07590603ND
2019-04-08600523ND
2019-04-08600522ND
2019-07-08622407ND
2019-07-08622406ND
2019-10-15638231ND
2019-10-15638230ND