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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Chatham Co-North

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
20141.88 ppb169ND - 4.00 ppb
20151.25 ppb165ND - 7.00 ppb
2016ND160ND
2017ND160ND
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
2014-03-1737729_14-08296ND
2014-03-1737729_14-08297ND
2014-03-1737729_14-08294ND
2014-03-1837729_14-08295ND
2014-06-1637729_14-179554.00 ppb
2014-06-1637729_14-179564.00 ppb
2014-06-1637729_14-179584.00 ppb
2014-06-1737729_14-17957ND
2014-09-1637729_14-28450ND
2014-09-1637729_14-284522.00 ppb
2014-09-1637729_14-284532.00 ppb
2014-09-1637729_14-28454ND
2014-12-1537729_14-382524.00 ppb
2014-12-1537729_14-382593.00 ppb
2014-12-1537729_14-382584.00 ppb
2014-12-1537729_14-382603.00 ppb
2015-03-10ND
2015-03-102.00 ppb
2015-03-10ND
2015-03-10ND
2015-06-167.00 ppb
2015-06-163.00 ppb
2015-06-164.00 ppb
2015-06-164.00 ppb
2015-09-15ND
2015-09-15ND
2015-09-15ND
2015-09-15ND
2015-12-14ND
2015-12-14ND
2015-12-14ND
2015-12-14ND
2016-03-1537729_16-08664ND
2016-03-1537729_16-08665ND
2016-03-1537729_16-08663ND
2016-03-1537729_16-08662ND
2016-06-1437729_16-19344ND
2016-06-1437729_16-19343ND
2016-06-1437729_16-19342ND
2016-06-1437729_16-19339ND
2016-09-2037729_16-32946ND
2016-09-2037729_16-32951ND
2016-09-2037729_16-32952ND
2016-09-2037729_16-32953ND
2016-12-1237729_16-43431ND
2016-12-1337729_16-43432ND
2016-12-1337729_16-43437ND
2016-12-1337729_16-43438ND
2017-03-0737729_17-07857ND
2017-03-0737729_17-07854ND
2017-03-0737729_17-07855ND
2017-03-0737729_17-07856ND
2017-06-1337729_17-20081ND
2017-06-1337729_17-20082ND
2017-06-1337729_17-20083ND
2017-06-1337729_17-20084ND
2017-09-1137729_17-33487ND
2017-09-1137729_17-33486ND
2017-09-1137729_17-33484ND
2017-09-1137729_17-33477ND
2017-12-1937729_17-48611ND
2017-12-1937729_17-48612ND
2017-12-1937729_17-48613ND
2017-12-1937729_17-48614ND
2018-03-1337729_18-10018 ND
2018-03-1337729_18-09998 ND
2018-03-1337729_18-09947 ND
2018-03-1337729_18-09942 ND
2018-06-1137729_18-23718 ND
2018-06-1137729_18-23714 ND
2018-06-1137729_18-23716 ND
2018-06-1137729_18-23717 ND
2018-09-1137729_18-38567 ND
2018-09-1137729_18-38566 ND
2018-09-1137729_18-38565 ND
2018-09-1137729_18-38564 ND
2018-12-1737729_18-52905 ND
2018-12-1737729_18-52911 ND
2018-12-1837729_18-52910 ND
2018-12-1837729_18-52912 ND
2019-03-0437729_19-09283 ND
2019-03-0437729_19-09290 ND
2019-03-0437729_19-09291 ND
2019-03-0437729_19-09292 ND
2019-06-1137729_19-23946 ND
2019-06-1137729_19-23949 ND
2019-06-1137729_19-23948 ND
2019-06-1137729_19-23947 ND
2019-09-1037729_19-38969 ND
2019-09-1037729_19-38971 ND
2019-09-1037729_19-38970 ND
2019-09-1037729_19-38961 ND
2019-12-0937729_19-52594 ND
2019-12-0937729_19-52593 ND
2019-12-0937729_19-52592 ND
2019-12-0937729_19-52590 ND