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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Ebarb Wwks District # 1 - N Ebarb/belmont

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
20144.51 ppb168ND - 17.0 ppb
2015ND160ND
20161.63 ppb168ND - 5.50 ppb
2017ND160ND
20180.475 ppb164ND - 2.30 ppb
20190.188 ppb162ND - 1.50 ppb

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
2014-03-04L0040520-0215.0 ppb
2014-03-04L0040520-0117.0 ppb
2014-03-04L0040520-0215.0 ppb
2014-03-04L0040520-0117.0 ppb
2014-06-14351423210012.20 ppb
2014-06-14351423210021.90 ppb
2014-06-14351423210021.90 ppb
2014-06-14351423210012.20 ppb
2014-09-02L0048041-01ND
2014-09-02L0048041-02ND
2014-09-02L0048041-02ND
2014-09-02L0048041-01ND
2014-12-10L0051820-01ND
2014-12-10L0051820-02ND
2014-12-10L0051820-02ND
2014-12-10L0051820-01ND
2015-03-10LA4655-1ND
2015-03-10LA4655-2ND
2015-03-10LA4655-2ND
2015-03-10LA4655-1ND
2015-06-1035193061001ND
2015-06-1035193061002ND
2015-06-1035193061002ND
2015-06-1035193061001ND
2015-09-09LA11630-2ND
2015-09-09LA11630-1ND
2015-09-09LA11630-2ND
2015-09-09LA11630-1ND
2015-12-09LA14997-1ND
2015-12-09LA14997-2ND
2015-12-09LA14997-2ND
2015-12-09LA14997-1ND
2016-03-02LA17933-1ND
2016-03-02LA17933-2ND
2016-03-02LA17933-2ND
2016-03-02LA17933-1ND
2016-06-10LA21721-2ND
2016-06-10LA21721-1ND
2016-06-10LA21721-2ND
2016-06-10LA21721-1ND
2016-09-06LA25168-14.70 ppb
2016-09-06LA25168-25.50 ppb
2016-09-06LA25168-25.50 ppb
2016-09-06LA25168-14.70 ppb
2016-12-06LA28337-11.80 ppb
2016-12-06LA28337-21.000 ppb
2016-12-06LA28337-21.000 ppb
2016-12-06LA28337-11.80 ppb
2017-03-0235298741016ND
2017-03-0235298741009ND
2017-03-0235298741009ND
2017-03-0235298741016ND
2017-06-1935320264001ND
2017-06-1935320264001ND
2017-06-1935320264002ND
2017-06-1935320264002ND
2017-09-2135337451011ND
2017-09-2135337451012ND
2017-09-2135337451011ND
2017-09-2135337451012ND
2017-12-0735362315002ND
2017-12-0735362315001ND
2017-12-0735362315001ND
2017-12-0735362315002ND
2018-03-2135381743002ND
2018-03-2135381743001ND
2018-03-2135381743002ND
2018-03-2135381743001ND
2018-06-1835399479002ND
2018-06-1835399479002ND
2018-06-1835399479001ND
2018-06-1835399479001ND
2018-09-1735418757002ND
2018-09-1735418757001ND
2018-09-1735418757001ND
2018-09-1735418757002ND
2018-12-10354369250011.50 ppb
2018-12-10354369250022.30 ppb
2018-12-10354369250011.50 ppb
2018-12-10354369250022.30 ppb
2019-03-1135454284002ND
2019-03-1135454284001ND
2019-03-1135454284001ND
2019-03-1135454284002ND
2019-06-1235475453002ND
2019-06-1235475453002ND
2019-06-1235475453001ND
2019-06-1235475453001ND
2019-09-11354975690021.50 ppb
2019-09-1135497569001ND
2019-09-1135497569001ND
2019-09-11354975690021.50 ppb
2019-12-1135518855001ND
2019-12-1135518855002ND
2019-12-1135518855001ND
2019-12-1135518855002ND