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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Monterey Park 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
20150.681 ppb164ND - 3.10 ppb
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
2014-01-239588-802-0955ND
2014-01-239588-800-1030ND
2014-01-239588-801-1005ND
2014-01-239588-803-1015ND
2014-04-229588-803-1010ND
2014-04-229588-802-0950ND
2014-04-229588-801-1000ND
2014-04-229588-800-1025ND
2014-07-239588-803-1045ND
2014-07-239588-802-1110ND
2014-07-239588-801-1055ND
2014-07-239588-800-1030ND
2014-10-239588-802-1010ND
2014-10-239588-801-1020ND
2014-10-239588-803-1030ND
2014-10-239588-800-1045ND
2015-01-239588-803-0950ND
2015-01-239588-802-0930ND
2015-01-239588-801-0940ND
2015-01-239588-800-1005ND
2015-04-229588-803-1000ND
2015-04-229588-802-0935ND
2015-04-229588-800-1015ND
2015-04-229588-801-0950ND
2015-07-239588-800-10152.70 ppb
2015-07-239588-803-10002.70 ppb
2015-07-239588-802-09353.10 ppb
2015-07-239588-801-09502.40 ppb
2015-10-269588-801-0940ND
2015-10-269588-800-1000ND
2015-10-269588-803-0950ND
2015-10-269588-802-0930ND
2016-01-269588-801-1005ND
2016-01-269588-800-1030ND
2016-01-269588-803-1015ND
2016-01-269588-802-0955ND
2016-04-229588-801-0950ND
2016-04-229588-800-1015ND
2016-04-229588-803-1000ND
2016-04-229588-802-0935ND
2016-07-269588-803-0940ND
2016-07-269588-801-0950ND
2016-07-269588-800-1010ND
2016-07-269588-802-0940ND
2016-10-269588-803-1025ND
2016-10-269588-801-1010ND
2016-10-269588-802-1000ND
2016-10-269588-800-1035ND
2017-01-249588-802-0950ND
2017-01-249588-803-1010ND
2017-01-249588-801-1000ND
2017-01-249588-800-1025ND
2017-04-249588-802-1145ND
2017-04-249588-800-1110ND
2017-04-249588-801-1135ND
2017-04-249588-803-1120ND
2017-07-279588-800-1130ND
2017-07-279588-801-1050ND
2017-07-279588-803-1115ND
2017-07-279588-802-1100ND
2017-10-249588-803-1010ND
2017-10-249588-800-1025ND
2017-10-249588-802-0940ND
2017-10-249588-801-0955ND
2018-01-249588-803-1025ND
2018-01-249588-800-1040ND
2018-01-249588-801-1010ND
2018-01-249588-802-0955ND
2018-04-249588-801-0950ND
2018-04-249588-802-0940ND
2018-04-249588-803-1000ND
2018-04-249588-800-1010ND
2018-07-249588-801-0925ND
2018-07-249588-803-0935ND
2018-07-249588-802-0915ND
2018-07-249588-800-0955ND
2018-10-239588-801-0940ND
2018-10-239588-803-0950ND
2018-10-239588-802-0925ND
2018-10-239588-800-1000ND
2019-01-249588-800-1110ND
2019-01-249588-802-1025ND
2019-01-249588-801-1040ND
2019-01-249588-803-1055ND
2019-04-239588-800-1015ND
2019-04-239588-802-0935ND
2019-04-239588-803-1005ND
2019-04-239588-801-0950ND
2019-07-239588-803-0915ND
2019-07-239588-802-0955ND
2019-07-239588-800-1030ND
2019-07-239588-801-0905ND
2019-10-239588-803-1010ND
2019-10-239588-802-0945ND
2019-10-239588-800-1025ND
2019-10-239588-801-0955ND