Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Agua SUD

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
2013N/A00N/A
2014ND160ND
2015ND160ND
2016ND160ND
2017ND160ND
2018ND160ND
2019ND160ND

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
2014-03-18AC47340ND
2014-03-18AC47346ND
2014-03-18AC47347ND
2014-03-18AC47352ND
2014-05-05AC52991ND
2014-05-05AC52973ND
2014-05-05AC52971ND
2014-05-05AC52990ND
2014-08-19AC64419ND
2014-08-19AC64414ND
2014-08-19AC64428ND
2014-08-19AC64434ND
2014-10-08AC69168ND
2014-10-08AC69170ND
2014-10-08AC69167ND
2014-10-08AC69176ND
2015-02-05AC79445ND
2015-02-05AC79444ND
2015-02-05AC79447ND
2015-02-05AC79443ND
2015-05-05AC90471ND
2015-05-05AC90490ND
2015-05-05AC90475ND
2015-05-05AC90492ND
2015-09-22AD07985ND
2015-09-22AD07990ND
2015-09-22AD07982ND
2015-09-22AD07988ND
2015-11-04AD12599ND
2015-11-04AD12604ND
2015-11-04AD12607ND
2015-11-04AD12606ND
2016-02-24AD26040ND
2016-02-24AD26037ND
2016-02-24AD26038ND
2016-02-24AD26039ND
2016-05-10AD36355ND
2016-05-10AD36363ND
2016-05-10AD36362ND
2016-05-10AD36353ND
2016-09-13AD49347ND
2016-09-13AD49345ND
2016-09-13AD49350ND
2016-09-13AD49352ND
2016-10-26AD55119ND
2016-10-26AD55131ND
2016-10-26AD55127ND
2016-10-26AD55123ND
2017-03-08AD74323ND
2017-03-08AD74320ND
2017-03-08AD74319ND
2017-03-08AD74306ND
2017-05-19AD85030ND
2017-05-19AD85034ND
2017-05-19AD85033ND
2017-05-19AD85031ND
2017-08-02AD92130ND
2017-08-02AD92146ND
2017-08-02AD92129ND
2017-08-02AD92142ND
2017-11-08AE04319ND
2017-11-08AE04318ND
2017-11-08AE04307ND
2017-11-08AE04321ND
2018-03-05AE16937ND
2018-03-05AE16931ND
2018-03-05AE16934ND
2018-03-05AE16913ND
2018-05-14AE26348ND
2018-05-14AE26346ND
2018-05-14AE26340ND
2018-05-14AE26355ND
2018-08-27AE38662ND
2018-08-27AE38681ND
2018-08-27AE38679ND
2018-08-27AE38665ND
2018-12-06AE48179ND
2018-12-06AE48174ND
2018-12-06AE48184ND
2018-12-06AE48182ND
2019-01-15AE50094ND
2019-01-15AE50097ND
2019-01-15AE50091ND
2019-01-15AE50092ND
2019-06-13AE70560ND
2019-06-13AE70567ND
2019-06-13AE70565ND
2019-06-13AE70562ND
2019-09-17AE83786ND
2019-09-17AE83568ND
2019-09-17AE83570ND
2019-09-17AE83569ND
2019-12-04AE91416ND
2019-12-04AE91414ND
2019-12-04AE91415ND
2019-12-04AE91420ND