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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

El Monte Water Department

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
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
2014-01-289588-802-1025ND
2014-01-289588-800-1100ND
2014-01-289588-801-0945ND
2014-01-289588-803-0935ND
2014-04-249588-803-1040ND
2014-04-249588-802-1025ND
2014-04-249588-801-1045ND
2014-04-249588-800-1055ND
2014-07-289588-803-0955ND
2014-07-289588-802-1100ND
2014-07-289588-801-1010ND
2014-07-289588-800-1125ND
2014-10-289588-802-1105ND
2014-10-289588-801-1125ND
2014-10-289588-803-1115ND
2014-10-289588-800-1140ND
2015-01-299588-803-1020ND
2015-01-299588-802-1105ND
2015-01-299588-801-1035ND
2015-01-299588-800-1050ND
2015-04-289588-803-0940ND
2015-04-289588-802-0950ND
2015-04-289588-800-1050ND
2015-04-289588-801-0930ND
2015-07-289588-800-1105ND
2015-07-289588-803-1040ND
2015-07-289588-802-1025ND
2015-07-289588-801-1055ND
2015-10-299588-801-0950ND
2015-10-299588-800-1050ND
2015-10-299588-803-0940ND
2015-10-299588-802-1010ND
2016-01-289588-801-0945ND
2016-01-289588-800-1010ND
2016-01-289588-803-0935ND
2016-01-289588-802-0955ND
2016-04-289588-801-1315ND
2016-04-289588-800-1415ND
2016-04-289588-803-1325ND
2016-04-289588-802-1400ND
2016-07-289588-803-1330ND
2016-07-289588-801-1340ND
2016-07-289588-800-1410ND
2016-07-289588-802-1355ND
2016-10-319588-803-1315ND
2016-10-319588-801-1305ND
2016-10-319588-802-1325ND
2016-10-319588-800-1335ND
2017-01-309588-802-1340ND
2017-01-309588-803-1300ND
2017-01-309588-801-1310ND
2017-01-309588-800-1355ND
2017-04-279588-802-1425ND
2017-04-279588-800-1455ND
2017-04-279588-801-1325ND
2017-04-279588-803-1340ND
2017-07-319588-800-1045ND
2017-07-319588-801-1005ND
2017-07-319588-803-1015ND
2017-07-319588-802-1030ND
2017-10-319588-803-1305ND
2017-10-319588-800-1345ND
2017-10-319588-802-1330ND
2017-10-319588-801-1315ND
2018-01-259588-803-1000ND
2018-01-259588-800-1145ND
2018-01-259588-801-0950ND
2018-01-259588-802-1115ND
2018-04-309588-801-1310ND
2018-04-309588-802-1335ND
2018-04-309588-803-1320ND
2018-04-309588-800-1345ND
2018-07-259588-801-1235ND
2018-07-259588-803-1240ND
2018-07-259588-802-1350ND
2018-07-259588-800-1435ND
2018-10-319588-801-0945ND
2018-10-319588-803-0955ND
2018-10-319588-802-1100ND
2018-10-319588-800-1125ND
2019-01-319588-800-1100ND
2019-01-319588-802-1040ND
2019-01-319588-801-0915ND
2019-01-319588-803-0925ND
2019-04-259588-800-1335ND
2019-04-259588-802-1315ND
2019-04-259588-803-1230ND
2019-04-259588-801-1240ND
2019-07-259588-803-1330ND
2019-07-259588-802-1520ND
2019-07-259588-800-1550ND
2019-07-259588-801-1335ND
2019-10-309588-803-1310ND
2019-10-309588-802-1415ND
2019-10-309588-800-1435ND
2019-10-309588-801-1320ND