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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Tull Water

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

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.513 ppb82ND - 2.10 ppb
20150.300 ppb81ND - 2.40 ppb
20160.300 ppb81ND - 2.40 ppb
20171.05 ppb83ND - 2.90 ppb
20181.26 ppb84ND - 2.80 ppb
20190.300 ppb81ND - 2.40 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
2014-01-0814010002101ND
2014-01-0814010002001ND
2014-04-03140930086012.10 ppb
2014-04-03140930087012.00 ppb
2014-07-0214184004501ND
2014-07-0214184004401ND
2014-10-0814282014901ND
2014-10-0814282014801ND
2015-01-0615008015801ND
2015-01-0615008015901ND
2015-04-0715099009601ND
2015-04-0715099009501ND
2015-07-0715189001501ND
2015-07-0715189001401ND
2015-10-0615279001701ND
2015-10-06152790016012.40 ppb
2016-01-0616008001601ND
2016-01-0616008001701ND
2016-04-19161120073012.40 ppb
2016-04-1916112007201ND
2016-07-0416189001001ND
2016-07-0416189000901ND
2016-10-0416280015001ND
2016-10-0416280015101ND
2017-01-0417005015101ND
2017-01-0417005015201ND
2017-04-0417096002501ND
2017-04-0417096002401ND
2017-07-03171870130012.90 ppb
2017-07-03171870131012.60 ppb
2017-10-03172780154012.90 ppb
2017-10-0317278015501ND
2018-01-0218004001601ND
2018-01-0218004001701ND
2018-04-0218095015201ND
2018-04-0218095015101ND
2018-07-03181860156012.30 ppb
2018-07-03181860155012.40 ppb
2018-10-02182770120012.80 ppb
2018-10-02182770121012.60 ppb
2019-01-0919011002002ND
2019-01-0919011001902ND
2019-04-0119094015601ND
2019-04-0119094015501ND
2019-07-09191920132012.40 ppb
2019-07-0919192013101ND
2019-10-0119276007001ND
2019-10-0119276006901ND