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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Garden Acres Subdivision

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

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20142.25 ppb21ND - 4.50 ppb
20151.48 ppb41ND - 5.90 ppb
2016ND40ND
2017ND40ND
20181.65 ppb42ND - 4.00 ppb
20191.23 ppb42ND - 3.70 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
2014-09-17Q14452480034.50 ppb
2014-12-11Q1459828001ND
2015-03-17Q1509916001ND
2015-06-11Q1521798003ND
2015-08-17Q1532396001ND
2015-10-26Q15420520015.90 ppb
2016-03-24Q1612205001ND
2016-05-10Q1618319001ND
2016-09-09Q1636722001ND
2016-11-10Q1648975001ND
2017-01-18Q1702417002ND
2017-04-11Q1714652001ND
2017-07-07Q1727792001ND
2017-10-06Q1749350001ND
2018-01-03Q1800202003ND
2018-04-04Q18140320014.00 ppb
2018-07-12Q18277060012.60 ppb
2018-10-10Q1840317001ND
2019-03-21Q19119320061.20 ppb
2019-05-28Q19287980013.70 ppb
2019-09-05Q1962430001ND
2019-10-28Q1973885001ND