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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Wards Chapel 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

 

92

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND120ND
2016ND160ND
20170.0950 ppb162ND - 0.760 ppb
2018ND160ND
20190.121 ppb162ND - 0.970 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
2014-03-121284464ND
2014-03-121284463ND
2014-03-121284464ND
2014-03-121284463ND
2014-06-181310852ND
2014-06-181310853ND
2014-06-181310853ND
2014-06-181310852ND
2014-09-171335098ND
2014-09-171335099ND
2014-09-171335099ND
2014-09-171335098ND
2014-12-101356550ND
2014-12-101356551ND
2014-12-101356551ND
2014-12-101356550ND
2015-03-181380162ND
2015-03-181380163ND
2015-03-181380163ND
2015-03-181380162ND
2015-09-121426792ND
2015-09-121426793ND
2015-09-121426793ND
2015-09-121426792ND
2015-12-091450070ND
2015-12-091450070ND
2015-12-091450069ND
2015-12-091450069ND
2016-03-091473608ND
2016-03-091473609ND
2016-03-091473608ND
2016-03-091473609ND
2016-06-151499875ND
2016-06-151499876ND
2016-06-151499875ND
2016-06-151499876ND
2016-09-211526487ND
2016-09-211526487ND
2016-09-211526486ND
2016-09-211526486ND
2016-12-141548541ND
2016-12-141548541ND
2016-12-141548540ND
2016-12-141548540ND
2017-03-0235298606010ND
2017-03-0235298606009ND
2017-03-0235298606010ND
2017-03-0235298606009ND
2017-06-1935319531007ND
2017-06-1935319531008ND
2017-06-1935319531008ND
2017-06-1935319531007ND
2017-09-2135337452007ND
2017-09-2135337452008ND
2017-09-2135337452008ND
2017-09-2135337452007ND
2017-12-1835364712002ND
2017-12-18353647120010.760 ppb
2017-12-18353647120010.760 ppb
2017-12-1835364712002ND
2018-03-0135377808001ND
2018-03-0135377808002ND
2018-03-0135377808001ND
2018-03-0135377808002ND
2018-06-1835399875001ND
2018-06-1835399875002ND
2018-06-1835399875001ND
2018-06-1835399875002ND
2018-09-1835419427002ND
2018-09-1835419427001ND
2018-09-1835419427001ND
2018-09-1835419427002ND
2018-12-1735438494001ND
2018-12-1735438494002ND
2018-12-1735438494001ND
2018-12-1735438494002ND
2019-03-19354562950020.970 ppb
2019-03-1935456295001ND
2019-03-1935456295001ND
2019-03-19354562950020.970 ppb
2019-06-0535473930002ND
2019-06-0535473930002ND
2019-06-0535473930001ND
2019-06-0535473930001ND
2019-09-1835499545002ND
2019-09-1835499545001ND
2019-09-1835499545001ND
2019-09-1835499545002ND
2019-12-1235518849001ND
2019-12-1235518849002ND
2019-12-1235518849001ND
2019-12-1235518849002ND