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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Northtown 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

 

80

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND80ND
2015ND80ND
20160.150 ppb161ND - 2.40 ppb
2017ND160ND
2018ND160ND
20190.625 ppb164ND - 2.90 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
2014-03-13AC46941ND
2014-03-13AC46943ND
2014-06-17AC57151ND
2014-06-17AC57149ND
2014-08-26AC65238ND
2014-08-26AC65235ND
2014-11-19AC72422ND
2014-11-19AC72424ND
2015-03-18AC84982ND
2015-03-18AC84986ND
2015-05-20AC92794ND
2015-05-20AC92791ND
2015-09-21AD07781ND
2015-09-21AD07785ND
2015-11-04AD12626ND
2015-11-04AD12617ND
2016-02-09AD227402.40 ppb
2016-02-09AD22739ND
2016-02-09AD22730ND
2016-02-09AD22735ND
2016-06-22AD41501ND
2016-06-22AD41503ND
2016-06-22AD41502ND
2016-06-22AD41497ND
2016-09-13AD49142ND
2016-09-13AD49160ND
2016-09-13AD49143ND
2016-09-13AD49145ND
2016-11-29AD59358ND
2016-11-29AD59354ND
2016-11-29AD59361ND
2016-11-29AD59352ND
2017-03-20AD75697ND
2017-03-20AD75696ND
2017-03-20AD75695ND
2017-03-20AD75694ND
2017-05-04AD82699ND
2017-05-04AD82722ND
2017-05-04AD82723ND
2017-05-04AD82719ND
2017-07-19AD89877ND
2017-07-19AD89915ND
2017-07-19AD89913ND
2017-07-19AD89887ND
2017-11-28AE05903ND
2017-11-28AE05901ND
2017-11-28AE05905ND
2017-11-28AE05906ND
2018-02-21AE14703ND
2018-02-21AE14687ND
2018-02-21AE14682ND
2018-02-21AE14688ND
2018-04-17AE22748ND
2018-04-17AE22731ND
2018-04-17AE22737ND
2018-04-17AE22752ND
2018-07-19AE33909ND
2018-07-19AE33918ND
2018-07-19AE33924ND
2018-07-19AE33911ND
2018-10-10AE43029ND
2018-10-10AE43032ND
2018-10-10AE43041ND
2018-10-10AE43039ND
2019-01-29AE519212.00 ppb
2019-01-29AE51898ND
2019-01-29AE51923ND
2019-01-29AE51899ND
2019-04-18AE62948ND
2019-04-18AE62936ND
2019-04-18AE62939ND
2019-04-18AE62935ND
2019-07-11AE74061ND
2019-07-11AE74062ND
2019-07-11AE74063ND
2019-07-11AE74064ND
2019-10-15AE86579ND
2019-10-15AE865892.90 ppb
2019-10-15AE865882.80 ppb
2019-10-15AE865862.30 ppb