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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Northwestern W and SD - Toledo Svce Area

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
2014ND160ND
20150.750 ppb165ND - 2.60 ppb
2016ND160ND
2017ND160ND
2018ND160ND
2019ND120ND

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
2014-02-12AG64491ND
2014-02-12AG64490ND
2014-02-12AG64489ND
2014-02-12AG64488ND
2014-05-08AG70337ND
2014-05-08AG70338ND
2014-05-08AG70340ND
2014-05-08AG70339ND
2014-08-12AG77626ND
2014-08-12AG77627ND
2014-08-12AG77628ND
2014-08-12AG77629ND
2014-11-13AG85617ND
2014-11-13AG85618ND
2014-11-13AG85616ND
2014-11-13AG85615ND
2015-02-10AG90546ND
2015-02-10AG90547ND
2015-02-10AG90548ND
2015-02-10AG90549ND
2015-05-13AG96368ND
2015-05-13AG96369ND
2015-05-13AG96370ND
2015-05-13AG963712.30 ppb
2015-08-12AH035942.00 ppb
2015-08-12AH035972.60 ppb
2015-08-12AH035952.50 ppb
2015-08-12AH035962.60 ppb
2015-11-12AH10030ND
2015-11-12AH10031ND
2015-11-12AH10032ND
2015-11-12AH10033ND
2016-02-10AH15303ND
2016-02-10AH15304ND
2016-02-10AH15305ND
2016-02-10AH15306ND
2016-05-11AH21651ND
2016-05-11AH21654ND
2016-05-11AH21653ND
2016-05-11AH21652ND
2016-08-10AH28218ND
2016-08-10AH28219ND
2016-08-10AH28221ND
2016-08-11AH28220ND
2016-11-10AH35780ND
2016-11-10AH35779ND
2016-11-10AH35777ND
2016-11-10AH35778ND
2017-02-08AH43000ND
2017-02-08AH43001ND
2017-02-08AH43002ND
2017-02-08AH42999ND
2017-05-11AH49648ND
2017-05-11AH49649ND
2017-05-11AH49650ND
2017-05-11AH49651ND
2017-08-09AH57027ND
2017-08-09AH57026ND
2017-08-09AH57025ND
2017-08-09AH57024ND
2017-11-08AH64199ND
2017-11-08AH64200ND
2017-11-08AH64201ND
2017-11-08AH64202ND
2018-02-08AH69833ND
2018-02-08AH69834ND
2018-02-08AH69836ND
2018-02-12AH69835ND
2018-05-08AH75858ND
2018-05-08AH75856ND
2018-05-08AH75855ND
2018-05-08AH75857ND
2018-08-09AH82889ND
2018-08-09AH82890ND
2018-08-09AH82891ND
2018-08-09AH82892ND
2018-11-13AH90151ND
2018-11-13AH90152ND
2018-11-13AH90153ND
2018-11-13AH90154ND
2019-02-13AH95903ND
2019-02-13AH95905ND
2019-02-13AH95904ND
2019-02-13AH95902ND
2019-05-09AI02034ND
2019-05-09AI02035ND
2019-05-09AI02036ND
2019-05-09AI02037ND
2019-08-09AI08719ND
2019-08-09AI08720ND
2019-08-09AI08721ND
2019-08-09AI08722ND