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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Gladstone

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
2013N/A00N/A
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
2014-01-14AC16619ND
2014-01-14AC16620ND
2014-01-14AC16621ND
2014-01-14AC16622ND
2014-04-08AC21526ND
2014-04-08AC21527ND
2014-04-08AC21528ND
2014-04-08AC21529ND
2014-07-23AC30522ND
2014-07-23AC30523ND
2014-07-23AC30524ND
2014-07-23AC30525ND
2014-10-15AC37593ND
2014-10-15AC37595ND
2014-10-15AC37594ND
2014-10-15AC37592ND
2015-01-14AC40319ND
2015-01-14AC40316ND
2015-01-14AC40318ND
2015-01-14AC40317ND
2015-04-21AC45000ND
2015-04-21AC45001ND
2015-04-21AC45003ND
2015-04-21AC45002ND
2015-07-14AC54206ND
2015-07-14AC54207ND
2015-07-14AC54208ND
2015-07-14AC54205ND
2015-10-14AC61161ND
2015-10-14AC61160ND
2015-10-14AC61162ND
2015-10-14AC61159ND
2016-01-12AC64966ND
2016-01-12AC64964ND
2016-01-12AC64965ND
2016-01-12AC64967ND
2016-04-12AC69326ND
2016-04-12AC69324ND
2016-04-12AC69325ND
2016-04-12AC69323ND
2016-09-07AC83739ND
2016-09-07AC83738ND
2016-09-07AC83736ND
2016-09-07AC83737ND
2016-10-19AC86234ND
2016-10-19AC86233ND
2016-10-19AC86236ND
2016-10-19AC86235ND
2017-01-18AC89044ND
2017-01-18AC89045ND
2017-01-18AC89043ND
2017-01-18AC89046ND
2017-04-12AC94413ND
2017-04-12AC94412ND
2017-04-12AC94411ND
2017-04-12AC94410ND
2017-07-12AD01323ND
2017-07-12AD01324ND
2017-07-12AD01321ND
2017-07-12AD01322ND
2017-10-11AD07846ND
2017-10-11AD07849ND
2017-10-11AD07848ND
2017-10-11AD07847ND
2018-01-17AD11290ND
2018-01-17AD11291ND
2018-01-17AD11292ND
2018-01-17AD11293ND
2018-04-18AD17961ND
2018-04-18AD17962ND
2018-04-18AD17963ND
2018-04-18AD17964ND
2018-07-25AD29099ND
2018-07-25AD29102ND
2018-07-25AD29101ND
2018-07-25AD29100ND
2018-10-17AD34372ND
2018-10-17AD34369ND
2018-10-17AD34370ND
2018-10-17AD34371ND
2019-01-16AD37680ND
2019-01-16AD37681ND
2019-01-16AD37682ND
2019-01-16AD37683ND
2019-04-10AD46101ND
2019-04-10AD46103ND
2019-04-10AD46102ND
2019-04-10AD46100ND
2019-07-10AD51718ND
2019-07-10AD51719ND
2019-07-10AD51720ND
2019-07-10AD51721ND
2019-10-09AD56685ND
2019-10-09AD56686ND
2019-10-09AD56687ND
2019-10-14AD56684ND