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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Union Parish Waterworks District 1

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

 

72

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND140ND
2016ND80ND
2017ND180ND
2018ND160ND
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
2015-02-191373915ND
2015-02-191373915ND
2015-04-281390507ND
2015-04-281390506ND
2015-04-281390507ND
2015-04-281390506ND
2015-05-271398000ND
2015-05-271397999ND
2015-05-271398000ND
2015-05-271397999ND
2015-08-191420494ND
2015-08-191420493ND
2015-08-191420494ND
2015-08-191420493ND
2016-04-121481848ND
2016-04-121481849ND
2016-04-121481848ND
2016-04-121481849ND
2016-09-211526509ND
2016-09-211526510ND
2016-09-211526509ND
2016-09-211526510ND
2017-02-0235292874016ND
2017-02-0235292874015ND
2017-02-0235292874015ND
2017-02-0235292874016ND
2017-04-2535308473003ND
2017-04-2535308473003ND
2017-05-1635312626007ND
2017-05-1635312626008ND
2017-05-1635312626007ND
2017-05-1635312626008ND
2017-08-1035329805012ND
2017-08-1035329805011ND
2017-08-1035329805012ND
2017-08-1035329805011ND
2017-11-2735350757002ND
2017-11-2735350757002ND
2017-11-2735350757001ND
2017-11-2735350757001ND
2018-02-2035375786002ND
2018-02-2035375786001ND
2018-02-2035375786002ND
2018-02-2035375786001ND
2018-05-2335394584001ND
2018-05-2335394584002ND
2018-05-2335394584002ND
2018-05-2335394584001ND
2018-08-1435411620002ND
2018-08-1435411620002ND
2018-08-1435411620001ND
2018-08-1435411620001ND
2018-11-1335431644002ND
2018-11-1335431644001ND
2018-11-1335431644001ND
2018-11-1335431644002ND
2019-02-1835449362002ND
2019-02-1835449362002ND
2019-02-1835449362001ND
2019-02-1835449362001ND
2019-05-1335469327002ND
2019-05-1335469327001ND
2019-05-1335469327001ND
2019-05-1335469327002ND
2019-08-1435491216002ND
2019-08-1435491216001ND
2019-08-1435491216001ND
2019-08-1435491216002ND
2019-11-1835514069001ND
2019-11-1835514069002ND
2019-11-1835514069001ND
2019-11-1835514069002ND