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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Benton Waterworks

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
20141.48 ppb168ND - 4.30 ppb
20151.21 ppb166ND - 4.70 ppb
2016ND160ND
20170.125 ppb161ND - 2.00 ppb
2018ND160ND
20190.163 ppb161ND - 2.60 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
2014-01-0714010000401ND
2014-01-0814010002201ND
2014-01-08140100023012.90 ppb
2014-01-0914010003101ND
2014-04-01140930058014.30 ppb
2014-04-01140930059013.60 ppb
2014-04-0114093005701ND
2014-04-01140930060012.50 ppb
2014-07-08141910017012.50 ppb
2014-07-08141910020013.30 ppb
2014-07-0814191001801ND
2014-07-0814191001901ND
2014-10-08142820041012.20 ppb
2014-10-0814282004001ND
2014-10-08142820038012.30 ppb
2014-10-0814282003901ND
2015-01-0615008015601ND
2015-01-0615008015701ND
2015-01-0615008015501ND
2015-01-0615008015401ND
2015-04-01150920088013.00 ppb
2015-04-01150920089012.80 ppb
2015-04-01150920090012.30 ppb
2015-04-0115092008501ND
2015-07-2315205004401ND
2015-07-23152050047013.70 ppb
2015-07-23152050043014.70 ppb
2015-07-23152050048012.90 ppb
2015-10-0615279002001ND
2015-10-0615279001801ND
2015-10-0615279001901ND
2015-10-0615279002101ND
2016-01-0816008013401ND
2016-01-0816008013801ND
2016-01-0816008013701ND
2016-01-0816008013901ND
2016-04-1816112005901ND
2016-04-1816112005601ND
2016-04-1816112005801ND
2016-04-1816112005701ND
2016-07-0516189002301ND
2016-07-0516189002601ND
2016-07-0516189002501ND
2016-07-0516189002401ND
2016-10-0416280016401ND
2016-10-0416280016701ND
2016-10-0416280015301ND
2016-10-0416280015201ND
2017-01-04170050081012.00 ppb
2017-01-0417005007001ND
2017-01-0417005007301ND
2017-01-0417005007401ND
2017-04-0417096002301ND
2017-04-0417096003101ND
2017-04-0417096002601ND
2017-04-0417096002701ND
2017-07-0417187016301ND
2017-07-0417187014901ND
2017-07-0417187014301ND
2017-07-0417187014401ND
2017-10-0317278016401ND
2017-10-0317278015601ND
2017-10-0317278016001ND
2017-10-0317278015901ND
2018-01-0218004001901ND
2018-01-0218004002101ND
2018-01-0218004001801ND
2018-01-0218004002001ND
2018-04-0318095016201ND
2018-04-0318095016301ND
2018-05-1618136000801ND
2018-05-1618136000701ND
2018-07-0318186017901ND
2018-07-0318186018001ND
2018-07-3018213002701ND
2018-07-3018213002801ND
2018-10-0218277011701ND
2018-10-0218277011801ND
2018-10-0218277011901ND
2018-10-0218277010501ND
2019-01-0919011001002ND
2019-01-0919011001402ND
2019-01-0919011000902ND
2019-01-0919011001102ND
2019-04-03190940131012.60 ppb
2019-04-0319094012901ND
2019-04-0319094013001ND
2019-04-0319094013401ND
2019-07-0819191005901ND
2019-07-0819191006101ND
2019-07-0819191006301ND
2019-07-0819191006901ND
2019-10-0219276005401ND
2019-10-0219276005201ND
2019-10-0219276005701ND
2019-10-0219276005301ND