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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Morgan Hill

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

 

97

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
2014ND170ND
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
2014-01-225810-900-0825ND
2014-01-225810-901-1135ND
2014-01-225810-902-1105ND
2014-01-225810-903-0855ND
2014-02-035810-902-1100ND
2014-04-215810-903-0920ND
2014-04-215810-902-1055ND
2014-04-215810-901-1120ND
2014-04-215810-900-0845ND
2014-07-215810-902-1030ND
2014-07-215810-903-0900ND
2014-07-215810-901-1100ND
2014-07-215810-900-0830ND
2014-10-065810-902-1120ND
2014-10-065810-901-1155ND
2014-10-065810-903-1100ND
2014-10-065810-900-0910ND
2015-01-215810-901-1100ND
2015-01-215810-902-1035ND
2015-01-215810-903-0900ND
2015-01-215810-900-0840ND
2015-04-205810-903-0840ND
2015-04-205810-902-1000ND
2015-04-205810-900-0810ND
2015-04-205810-901-1025ND
2015-07-211610-900-0850ND
2015-07-211610-903-0920ND
2015-07-211610-902-1140ND
2015-07-211610-901-1205ND
2015-10-191610-900-0800ND
2015-10-191610-903-0830ND
2015-10-191610-902-1005ND
2015-10-191610-901-1030ND
2016-01-191610-901-1100ND
2016-01-191610-900-0805ND
2016-01-191610-903-0825ND
2016-01-191610-902-1010ND
2016-04-181610-900-0820ND
2016-04-181610-901-1100ND
2016-04-181610-903-0840ND
2016-04-181610-902-1040ND
2016-07-181610-901-1040ND
2016-07-181610-903-0830ND
2016-07-181610-902-1020ND
2016-07-181610-900-0800ND
2016-10-101610-901-0930ND
2016-10-101610-902-0900ND
2016-10-101610-903-1100ND
2016-10-101610-900-1040ND
2017-01-175867-900-0900ND
2017-01-175867-902-1040ND
2017-01-175867-903-0910ND
2017-01-175867-901-1050ND
2017-04-171610-900-0835ND
2017-04-171610-903-0840ND
2017-04-171610-901-1020ND
2017-04-171610-902-1010ND
2017-07-171610-901-1045ND
2017-07-171610-900-0900ND
2017-07-171610-902-1030ND
2017-07-171610-903-0830ND
2017-10-161610-901-1055ND
2017-10-161610-900-0845ND
2017-10-161610-903-0900ND
2017-10-161610-902-1040ND
2018-01-161610-900-0830ND
2018-01-161610-903-0845ND
2018-01-161610-901-1045ND
2018-01-161610-902-1030ND
2018-04-161610-900-1115ND
2018-04-161610-903-0830ND
2018-04-161610-902-1000ND
2018-04-161610-901-1015ND
2018-07-161610-902-1015ND
2018-07-161610-903-0845ND
2018-07-161610-901-1030ND
2018-07-161610-900-0830ND
2018-10-151610-903-0830ND
2018-10-151610-901-1115ND
2018-10-151610-902-1100ND
2018-10-151610-900-0815ND
2019-01-231610-903-0830ND
2019-01-231610-901-1000ND
2019-01-231610-902-0940ND
2019-01-231610-900-0810ND
2019-04-231610-901-0900ND
2019-04-231610-900-0815ND
2019-04-231610-903-0745ND
2019-04-231610-902-0930ND
2019-07-151610-900-0745ND
2019-07-151610-903-0830ND
2019-07-151610-901-1045ND
2019-07-151610-902-1030ND
2019-10-141610-903-0815ND
2019-10-141610-900-0745ND
2019-10-141610-901-0930ND
2019-10-141610-902-1200ND