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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Jefferson County W and S District - M

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

 

92

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
20140.444 ppb163ND - 2.60 ppb
20150.125 ppb161ND - 2.00 ppb
2016ND160ND
2017ND160ND
2018ND160ND
2019ND120ND

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
2014-03-04A140183135ND
2014-03-04A140183134ND
2014-03-04A140183133ND
2014-03-04A140183132ND
2014-06-03A140191440ND
2014-06-03A140191439ND
2014-06-03A140191442ND
2014-06-03A140191441ND
2014-09-02A1402167282.60 ppb
2014-09-02A1402167262.30 ppb
2014-09-02A140216729ND
2014-09-02A1402167272.20 ppb
2014-12-02A140217649ND
2014-12-02A140217650ND
2014-12-02A140217651ND
2014-12-03A140217652ND
2015-03-03A150232055ND
2015-03-03A150232056ND
2015-03-03A150232057ND
2015-03-03A150232054ND
2015-06-02A150304337ND
2015-06-02A150304338ND
2015-06-02A150304339ND
2015-06-02A150304340ND
2015-09-01A1503043312.00 ppb
2015-09-01A150319914ND
2015-09-01A150319913ND
2015-09-01A150319912ND
2015-12-01A150328610ND
2015-12-01A150328609ND
2015-12-01A150328608ND
2015-12-02A150328611ND
2016-03-01A160332011ND
2016-03-01A160332012ND
2016-03-01A160332013ND
2016-03-01A160332014ND
2016-06-03A160338385ND
2016-06-03A160338387ND
2016-06-03A160338386ND
2016-06-03A160338384ND
2016-09-05A160399305ND
2016-09-05A160399306ND
2016-09-05A160399307ND
2016-09-05A160074253ND
2016-12-06A160447283ND
2016-12-06A160447282ND
2016-12-06A160447280ND
2016-12-06A160447281ND
2017-03-06A170463177ND
2017-03-06A170463178ND
2017-03-06A170463179ND
2017-03-06A170463180ND
2017-06-05A170487473ND
2017-06-05A170487472ND
2017-06-05A170487471ND
2017-06-05A170487468ND
2017-09-01A170487474ND
2017-09-01A170487475ND
2017-09-01A170320044ND
2017-09-05A170320045ND
2017-12-04A170539986ND
2017-12-04A170539987ND
2017-12-04A170539988ND
2017-12-04A170539989ND
2018-03-05A180539992ND
2018-03-05A180570965ND
2018-03-05A180570964ND
2018-03-05A180539991ND
2018-06-05A180600549ND
2018-06-05A180600550ND
2018-06-05A180600551ND
2018-06-05A180600552ND
2018-09-04A180621781ND
2018-09-04A180621782ND
2018-09-04A180621783ND
2018-09-05A180621779ND
2018-12-048L00365-03ND
2018-12-048L00365-02ND
2018-12-048L00365-01ND
2018-12-048L00365-04ND
2019-03-049C00747-01ND
2019-03-049C00747-04ND
2019-03-049C00747-03ND
2019-03-049C00747-02ND
2019-06-039F00553-01ND
2019-06-039F00553-02ND
2019-06-039F00553-03ND
2019-06-039F00553-04ND
2019-09-039I00376-02ND
2019-09-039I00376-03ND
2019-09-039I00376-04ND
2019-09-049I00376-01ND