Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

City of Atchison

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
20141.38 ppb167ND - 4.00 ppb
20151.94 ppb1610ND - 9.00 ppb
20161.50 ppb168ND - 4.60 ppb
20172.28 ppb1610ND - 5.50 ppb
20181.03 ppb165ND - 4.60 ppb
20192.73 ppb1610ND - 8.20 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
2014-02-1160156ND
2014-02-1160126ND
2014-02-1160109ND
2014-02-1160097ND
2014-05-191164102.70 ppb
2014-05-191164083.70 ppb
2014-05-191164062.40 ppb
2014-05-19116404ND
2014-08-261807532.90 ppb
2014-08-261807523.60 ppb
2014-08-261807542.70 ppb
2014-08-26180755ND
2014-11-17232375ND
2014-11-172323744.00 ppb
2014-11-17232372ND
2014-11-17232371ND
2015-02-17280148ND
2015-02-172801472.00 ppb
2015-02-17280146ND
2015-02-17280145ND
2015-05-043220882.20 ppb
2015-05-043220892.10 ppb
2015-05-04322091ND
2015-05-04322090ND
2015-08-033773032.90 ppb
2015-08-033773022.60 ppb
2015-08-033773013.30 ppb
2015-08-033773009.00 ppb
2015-11-16428035ND
2015-11-164280342.30 ppb
2015-11-164280332.10 ppb
2015-11-164280322.50 ppb
2016-02-08490343ND
2016-02-08490342ND
2016-02-08490344ND
2016-02-08490345ND
2016-05-23550974ND
2016-05-235509734.40 ppb
2016-05-235509724.60 ppb
2016-05-235509713.90 ppb
2016-08-166042282.40 ppb
2016-08-16604227ND
2016-08-166042262.00 ppb
2016-08-166042252.30 ppb
2016-12-126741142.20 ppb
2016-12-126741172.20 ppb
2016-12-12674116ND
2016-12-12674115ND
2017-03-067205945.20 ppb
2017-03-067205935.20 ppb
2017-03-067205925.50 ppb
2017-03-06720591ND
2017-05-227656143.00 ppb
2017-05-227656133.90 ppb
2017-05-227656124.50 ppb
2017-05-22765611ND
2017-08-148196742.20 ppb
2017-08-148196732.70 ppb
2017-08-148196752.00 ppb
2017-08-14819676ND
2017-11-06872125ND
2017-11-068721242.20 ppb
2017-11-06872123ND
2017-11-06872122ND
2018-02-12907952ND
2018-02-12907951ND
2018-02-12907950ND
2018-02-12907949ND
2018-05-149708713.70 ppb
2018-05-149708724.60 ppb
2018-05-149708744.00 ppb
2018-05-14970873ND
2018-08-201029038ND
2018-08-201029037ND
2018-08-2010290362.00 ppb
2018-08-201029035ND
2018-11-051073733ND
2018-11-0510737322.10 ppb
2018-11-051073731ND
2018-11-051073730ND
2019-03-041131762ND
2019-03-041131761ND
2019-03-041131763ND
2019-03-041131764ND
2019-05-2011577475.50 ppb
2019-05-201157746ND
2019-05-2011577456.30 ppb
2019-05-2011577446.90 ppb
2019-08-1212226502.60 ppb
2019-08-1212226498.20 ppb
2019-08-121222648ND
2019-08-1212226473.10 ppb
2019-11-1812773162.40 ppb
2019-11-1812773192.00 ppb
2019-11-1812773184.10 ppb
2019-11-1812773172.50 ppb