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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Bridgestone MUD

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
20141.59 ppb1610ND - 4.00 ppb
20150.644 ppb164ND - 3.20 ppb
20160.731 ppb163ND - 6.40 ppb
20170.781 ppb164ND - 4.30 ppb
20180.438 ppb163ND - 2.50 ppb
20190.781 ppb165ND - 3.30 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
2014-02-14AC430362.30 ppb
2014-02-14AC430853.50 ppb
2014-02-14AC430824.00 ppb
2014-02-14AC430372.10 ppb
2014-04-04AC496082.10 ppb
2014-04-04AC495892.30 ppb
2014-04-04AC49578ND
2014-06-09AC56305ND
2014-07-01AC586132.30 ppb
2014-07-01AC586192.50 ppb
2014-07-01AC586082.30 ppb
2014-07-01AC586092.00 ppb
2014-10-17AC70067ND
2014-10-17AC70068ND
2014-10-17AC70065ND
2014-10-17AC70069ND
2015-03-03AC82528ND
2015-03-03AC82516ND
2015-03-03AC82514ND
2015-03-03AC82512ND
2015-04-17AC887833.20 ppb
2015-04-17AC88767ND
2015-04-17AC887652.30 ppb
2015-04-17AC88763ND
2015-08-14AD04303ND
2015-08-14AD042942.40 ppb
2015-08-14AD042992.40 ppb
2015-08-14AD04320ND
2015-11-24AD14544ND
2015-11-24AD14548ND
2015-11-24AD14549ND
2015-11-24AD14538ND
2016-02-19AD24711ND
2016-02-19AD24714ND
2016-02-19AD247192.60 ppb
2016-02-19AD24718ND
2016-06-10AD40198ND
2016-06-10AD40164ND
2016-06-10AD40194ND
2016-06-10AD40165ND
2016-09-30AD52178ND
2016-09-30AD521792.70 ppb
2016-09-30AD52175ND
2016-09-30AD52167ND
2016-12-06AD60592ND
2016-12-06AD60591ND
2016-12-06AD60590ND
2016-12-06AD605936.40 ppb
2017-01-27AD675202.20 ppb
2017-01-27AD675164.30 ppb
2017-01-27AD675143.50 ppb
2017-01-27AD675152.50 ppb
2017-04-28AD81763ND
2017-04-28AD81764ND
2017-04-28AD81765ND
2017-04-28AD81766ND
2017-07-24AD90267ND
2017-07-24AD90269ND
2017-07-24AD90264ND
2017-07-24AD90266ND
2017-11-28AE05920ND
2017-11-28AE05921ND
2017-11-28AE05919ND
2017-11-28AE05922ND
2018-03-02AE16600ND
2018-03-02AE16599ND
2018-03-02AE165982.30 ppb
2018-03-02AE16593ND
2018-05-21AE269542.20 ppb
2018-05-21AE26977ND
2018-05-21AE26955ND
2018-05-21AE26962ND
2018-07-27AE34853ND
2018-07-27AE34852ND
2018-07-27AE34842ND
2018-07-27AE34854ND
2018-10-19AE44079ND
2018-10-19AE44078ND
2018-10-19AE44080ND
2018-10-19AE440812.50 ppb
2019-02-22AE556152.30 ppb
2019-02-22AE556142.20 ppb
2019-02-22AE556343.30 ppb
2019-02-22AE556332.70 ppb
2019-04-03AE61019ND
2019-04-03AE61018ND
2019-04-03AE61021ND
2019-04-03AE61020ND
2019-07-22AE75280ND
2019-07-22AE75293ND
2019-07-22AE75286ND
2019-07-22AE753032.00 ppb
2019-12-06AE91638ND
2019-12-06AE91639ND
2019-12-06AE91654ND
2019-12-06AE91655ND