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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Magnolia Waterworks

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

 

101

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
20142.97 ppb2012ND - 7.30 ppb
2015ND160ND
20164.89 ppb166ND - 51.0 ppb
20170.276 ppb171ND - 4.70 ppb
20181.14 ppb164ND - 6.90 ppb
20190.525 ppb162ND - 4.50 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
2014-01-06140080004014.60 ppb
2014-01-0614008000101ND
2014-01-0614008000201ND
2014-01-0614008000301ND
2014-04-01140930010015.50 ppb
2014-04-01140930011016.20 ppb
2014-04-01140930012016.50 ppb
2014-04-01140930009017.30 ppb
2014-07-0114184007201ND
2014-07-0114184007101ND
2014-07-01141840067014.80 ppb
2014-07-0114184006801ND
2014-10-0814282007301ND
2014-10-0814282007201ND
2014-10-08142820076014.40 ppb
2014-10-08142820077014.50 ppb
2014-10-27143030019014.80 ppb
2014-10-27143030020012.00 ppb
2014-10-27143030018012.70 ppb
2014-10-27143030016016.00 ppb
2015-01-0515008010401ND
2015-01-0515008010501ND
2015-01-0515008010301ND
2015-01-0515008010601ND
2015-04-0615099005001ND
2015-04-0615099005101ND
2015-05-1915141010601ND
2015-05-1915141010501ND
2015-07-0815190008101ND
2015-07-0815190008201ND
2015-07-0815190008601ND
2015-07-0815190008501ND
2015-10-0615281000101ND
2015-10-0615281000301ND
2015-10-0615281000201ND
2015-10-0615281000401ND
2016-01-0516007002601ND
2016-01-0516007002501ND
2016-01-0516007002401ND
2016-01-0516007002301ND
2016-04-0516098006501ND
2016-04-0516098006701ND
2016-04-05160980060014.50 ppb
2016-04-05160980064014.50 ppb
2016-07-0516189006101ND
2016-07-05161890060014.20 ppb
2016-07-051618900580151.0 ppb
2016-07-0516189006801ND
2016-10-04162800020015.20 ppb
2016-10-04162800024018.90 ppb
2016-10-0416280003201ND
2016-10-0416280002501ND
2017-01-0317005001501ND
2017-01-0317005000501ND
2017-01-0317005000801ND
2017-01-0317005000901ND
2017-04-0417095006101ND
2017-04-0417095006401ND
2017-04-0417095004801ND
2017-04-0417095004701ND
2017-07-03171870004014.70 ppb
2017-07-0317187001601ND
2017-07-0317187000801ND
2017-07-0317187000701ND
2017-07-2617208003701ND
2017-10-0217278000701ND
2017-10-0217278000801ND
2017-10-0217278000501ND
2017-10-2317299002201ND
2018-01-0218004005501ND
2018-01-0218004004301ND
2018-01-0218004004701ND
2018-01-0218004004401ND
2018-04-03180950021016.90 ppb
2018-04-0318095002901ND
2018-04-03180950020012.60 ppb
2018-04-0318095002201ND
2018-07-0318186007401ND
2018-07-0318186009001ND
2018-07-03181860073014.60 ppb
2018-07-0318186007501ND
2018-10-0118277002901ND
2018-10-0118277003701ND
2018-10-0118277003001ND
2018-10-01182770028014.20 ppb
2019-01-0719010006301ND
2019-01-0719010007001ND
2019-01-07190100062014.50 ppb
2019-01-07190100061013.90 ppb
2019-04-0119094001601ND
2019-04-0119094001001ND
2019-04-0119094001301ND
2019-04-0119094001201ND
2019-08-2019233001601ND
2019-08-2019233002001ND
2019-08-2019233001501ND
2019-08-2019233002101ND
2019-10-0119276000801ND
2019-10-0119276000601ND
2019-10-0119276000701ND
2019-10-0119276000501ND