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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

York Water District

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

 

88

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
2014ND120ND
20150.256 ppb162ND - 2.10 ppb
20160.144 ppb161ND - 2.30 ppb
20170.558 ppb123ND - 2.50 ppb
20180.125 ppb161ND - 2.00 ppb
20190.944 ppb166ND - 2.90 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
2014-02-26ND
2014-02-26ND
2014-02-26ND
2014-02-26ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-05-20ND
2014-09-22ND
2014-09-22ND
2014-09-22ND
2014-09-22ND
2015-02-18K003544001ND
2015-02-18K003545001ND
2015-02-18K0035460012.10 ppb
2015-02-18K003547001ND
2015-05-14K016242001ND
2015-05-14K016243001ND
2015-05-14K016244001ND
2015-05-14K016245001ND
2015-08-12K032564001ND
2015-08-12K032565001ND
2015-08-12K032566001ND
2015-08-12K032567001ND
2015-11-17K045667001ND
2015-11-17K0456680012.00 ppb
2015-11-17K045669001ND
2015-11-17K045670001ND
2016-02-17L003604001ND
2016-02-17L003605001ND
2016-02-17L003606001ND
2016-02-17L003607001ND
2016-05-11J052056001ND
2016-05-11J052057001ND
2016-05-11J0520550012.30 ppb
2016-05-11J052054001ND
2016-08-08L016450001ND
2016-08-08L016448001ND
2016-08-08L016449001ND
2016-08-08L016451001ND
2016-11-14L031722001ND
2016-11-14L031723001ND
2016-11-14L031724001ND
2016-11-14L031725001ND
2017-02-08L046126001ND
2017-02-08L046123001ND
2017-02-08L046124001ND
2017-02-08L046125001ND
2017-05-02M0040790012.50 ppb
2017-05-08M004078001ND
2017-05-08M0040770012.10 ppb
2017-05-08M0040760012.10 ppb
2017-08-221705540-01ND
2017-08-221705539-01ND
2017-08-221705538-01ND
2017-08-221705537-01ND
2018-02-071718280-01ND
2018-02-071718279-01ND
2018-02-071718278-01ND
2018-02-071718281-01ND
2018-05-021802247-01ND
2018-05-021802248-012.00 ppb
2018-05-021802249-01ND
2018-05-021802250-01ND
2018-08-021808568-01ND
2018-08-021808566-01ND
2018-08-021808565-01ND
2018-08-021808567-01ND
2018-11-071815841-01ND
2018-11-071815838-01ND
2018-11-071815839-01ND
2018-11-071815840-01ND
2019-02-051822012-012.20 ppb
2019-02-051822015-01ND
2019-02-051822014-01ND
2019-02-051822013-01ND
2019-05-081902131-012.20 ppb
2019-05-081902130-01ND
2019-05-081902129-01ND
2019-05-081902128-01ND
2019-08-061907996-012.70 ppb
2019-08-061907995-012.50 ppb
2019-08-061907998-012.90 ppb
2019-08-061907997-012.60 ppb
2019-11-061914835-01ND
2019-11-061914833-01ND
2019-11-061914832-01ND
2019-11-061914834-01ND