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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Gregory

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

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
20160.500 ppb41ND - 2.00 ppb
20171.55 ppb41ND - 6.20 ppb
2018ND40ND
20190.500 ppb41ND - 2.00 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
2014-03-12AC46769ND
2014-04-23AC51517ND
2014-09-16AC67091ND
2014-11-17AC72241ND
2015-02-12AC80415ND
2015-06-22AC96793ND
2015-09-09AD06190ND
2015-10-27AD11834ND
2016-03-14AD284632.00 ppb
2016-06-01AD38961ND
2016-07-20AD45229ND
2016-10-17AD53399ND
2017-03-07AD737076.20 ppb
2017-05-24AD85464ND
2017-09-27AD98277ND
2017-11-09AE04332ND
2018-02-21AE14716ND
2018-06-06AE28859ND
2018-08-23AE38423ND
2018-12-06AE48202ND
2019-02-28AE56554ND
2019-04-16AE625392.00 ppb
2019-08-06AE77241ND
2019-11-07AE88899ND