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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Bentonville Water Utilities

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
2013N/A00N/A
20140.550 ppb163ND - 3.10 ppb
20151.52 ppb127ND - 3.00 ppb
20161.77 ppb168ND - 5.50 ppb
20172.69 ppb1613ND - 4.90 ppb
20183.08 ppb1612ND - 5.90 ppb
20192.99 ppb1611ND - 6.20 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
2014-01-3014031002001ND
2014-01-3014031001801ND
2014-01-3014031001701ND
2014-01-3014031001901ND
2014-04-22141140096013.10 ppb
2014-04-22141140093012.70 ppb
2014-04-22141140095013.00 ppb
2014-04-2214114009401ND
2014-07-2314205003801ND
2014-07-2314205003701ND
2014-07-2314205003501ND
2014-07-2314205003601ND
2014-11-0414310010601ND
2014-11-0414310010701ND
2014-11-0414310010501ND
2014-11-0414310010801ND
2015-05-06151270053012.40 ppb
2015-05-06151270050012.50 ppb
2015-05-06151270051012.30 ppb
2015-05-0615127005201ND
2015-08-0315218014501ND
2015-08-03152180143012.40 ppb
2015-08-0315218014401ND
2015-08-0315218011201ND
2015-10-28153030061012.80 ppb
2015-10-2815303006201ND
2015-10-28153030060013.00 ppb
2015-10-28153030063012.80 ppb
2016-01-2616029009101ND
2016-01-2616029009201ND
2016-01-2616029009001ND
2016-01-2616029009301ND
2016-05-03161260139014.30 ppb
2016-05-03161260140012.90 ppb
2016-05-03161260141012.50 ppb
2016-05-03161260142012.10 ppb
2016-08-03162170087014.20 ppb
2016-08-03162170084015.50 ppb
2016-08-03162170085013.80 ppb
2016-08-03162170086013.00 ppb
2016-11-0116309000901ND
2016-11-0116309000801ND
2016-11-0116309000701ND
2016-11-0116309000601ND
2017-01-2517027005301ND
2017-01-25170270050012.10 ppb
2017-01-2517027005201ND
2017-01-2517027005101ND
2017-04-18171100089012.40 ppb
2017-04-18171100086012.50 ppb
2017-04-18171100087012.50 ppb
2017-04-18171100088013.00 ppb
2017-07-20172020048014.90 ppb
2017-07-20172020050014.10 ppb
2017-07-20172020049014.50 ppb
2017-07-20172020051014.30 ppb
2017-10-19172930009012.60 ppb
2017-10-19172930007013.80 ppb
2017-10-19172930050013.20 ppb
2017-10-19172930008013.10 ppb
2018-01-2218025007201ND
2018-01-2218025007401ND
2018-01-2218025007101ND
2018-01-2218025007301ND
2018-04-23181160097015.90 ppb
2018-04-23181160095013.90 ppb
2018-04-23181160096014.20 ppb
2018-04-23181160098014.00 ppb
2018-07-24182070069014.60 ppb
2018-07-24182070070014.70 ppb
2018-07-24182070071013.50 ppb
2018-07-24182070068015.00 ppb
2018-10-22182980131013.50 ppb
2018-10-22182980130013.10 ppb
2018-10-22182980132013.50 ppb
2018-10-22182980133013.30 ppb
2019-01-22190250030013.80 ppb
2019-01-2219025002801ND
2019-01-22190250027012.50 ppb
2019-01-22190250029012.70 ppb
2019-04-1619109002701ND
2019-04-1619109003001ND
2019-04-1619109002801ND
2019-04-1619109002901ND
2019-07-17191990099014.30 ppb
2019-07-17191990101014.10 ppb
2019-07-17191990100014.30 ppb
2019-07-17191990102014.20 ppb
2019-10-16192900128016.20 ppb
2019-10-16192900131015.20 ppb
2019-10-16192900130014.40 ppb
2019-10-16192900129016.20 ppb