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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

City of San Benito

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.

 

65

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.60 ppb42ND - 3.40 ppb
2013ND50ND
2014ND90ND
2015ND150ND
2016ND160ND
2017ND160ND

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
2012-01-111201250005ND
2012-04-101204235006ND
2012-07-1812078110073.00 ppb
2012-10-1812106540023.40 ppb
2013-01-16AC07969ND
2013-04-02AC15482ND
2013-07-09AC24133ND
2013-10-22AC32906ND
2013-10-22AC32905ND
2014-03-05AC45681ND
2014-03-05AC45693ND
2014-06-03AC55860ND
2014-06-03AC55842ND
2014-09-25AC68313ND
2014-09-25AC68314ND
2014-12-09AC74059ND
2014-12-09AC74058ND
2014-12-09AC74041ND
2015-03-18AC85000ND
2015-03-18AC85001ND
2015-03-18AC84999ND
2015-06-18AC96556ND
2015-06-18AC96558ND
2015-06-18AC96597ND
2015-06-18AC96553ND
2015-09-23AD08181ND
2015-09-23AD08185ND
2015-09-23AD08186ND
2015-09-23AD08183ND
2015-12-15AD16959ND
2015-12-15AD16958ND
2015-12-15AD16955ND
2015-12-15AD16952ND
2016-03-08AD27515ND
2016-03-08AD27511ND
2016-03-08AD27516ND
2016-03-08AD27520ND
2016-06-27AD41787ND
2016-06-27AD41786ND
2016-06-27AD41789ND
2016-06-27AD41779ND
2016-07-29AD46387ND
2016-07-29AD46370ND
2016-07-29AD46372ND
2016-07-29AD46375ND
2016-12-06AD60608ND
2016-12-06AD60610ND
2016-12-06AD60613ND
2016-12-06AD60607ND
2017-03-15AD75145ND
2017-03-15AD75147ND
2017-03-15AD75150ND
2017-03-15AD75152ND
2017-05-17AD84823ND
2017-05-17AD84815ND
2017-05-17AD84829ND
2017-05-17AD84830ND
2017-08-02AD91748ND
2017-08-02AD91743ND
2017-08-02AD91740ND
2017-08-02AD91749ND
2017-11-30AE06323ND
2017-11-30AE06331ND
2017-11-30AE06325ND
2017-11-30AE06324ND