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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Shawnee County RWD 4C

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
20140.531 ppb163ND - 4.30 ppb
20150.281 ppb162ND - 2.30 ppb
20160.319 ppb161ND - 5.10 ppb
2017ND160ND
20180.938 ppb161ND - 15.0 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
2014-03-0974823ND
2014-03-1074829ND
2014-03-1074827ND
2014-03-10748252.10 ppb
2014-06-09125052ND
2014-06-091250512.10 ppb
2014-06-091250504.30 ppb
2014-06-09125049ND
2014-09-08189778ND
2014-09-08189777ND
2014-09-08189779ND
2014-09-08189780ND
2014-12-15246724ND
2014-12-15246723ND
2014-12-15246722ND
2014-12-15246721ND
2015-03-02286032ND
2015-03-02286031ND
2015-03-02286030ND
2015-03-02286029ND
2015-06-223516532.30 ppb
2015-06-223516542.20 ppb
2015-06-22351656ND
2015-06-22351655ND
2015-09-21408951ND
2015-09-21408950ND
2015-09-21408949ND
2015-09-21408948ND
2015-12-07454374ND
2015-12-07454373ND
2015-12-07454372ND
2015-12-07454371ND
2016-03-14508539ND
2016-03-14508538ND
2016-03-14508540ND
2016-03-14508541ND
2016-06-13562328ND
2016-06-13562327ND
2016-06-13562326ND
2016-06-13562325ND
2016-09-12620959ND
2016-09-12620958ND
2016-09-126209575.10 ppb
2016-09-12620956ND
2016-12-12670464ND
2016-12-12670467ND
2016-12-12670466ND
2016-12-12670465ND
2017-03-20726209ND
2017-03-20726208ND
2017-03-20726207ND
2017-03-20726206ND
2017-06-19780493ND
2017-06-19780492ND
2017-06-19780491ND
2017-06-19780490ND
2017-09-25845708ND
2017-09-25845707ND
2017-09-25845709ND
2017-09-25845710ND
2017-12-18893976ND
2017-12-18893975ND
2017-12-18893974ND
2017-12-18893973ND
2018-03-19938043ND
2018-03-19938042ND
2018-03-19938041ND
2018-03-19938040ND
2018-06-18989293ND
2018-06-18989294ND
2018-06-18989296ND
2018-06-18989295ND
2018-09-241048069ND
2018-09-241048068ND
2018-09-24104806715.0 ppb
2018-09-241048066ND
2018-12-171091790ND
2018-12-171091789ND
2018-12-171091788ND
2018-12-171091787ND
2019-03-251138816ND
2019-03-251138815ND
2019-03-251138817ND
2019-03-251138818ND
2019-06-241190150ND
2019-06-241190149ND
2019-06-241190148ND
2019-06-241190147ND
2019-09-231245494ND
2019-09-231245493ND
2019-09-231245492ND
2019-09-231245491ND
2019-12-091284542ND
2019-12-091284545ND
2019-12-091284544ND
2019-12-091284543ND