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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Port Washington 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.

 

41

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND50ND
2014ND80ND
2015ND80ND
20160.250 ppb82ND - 1.000 ppb
2017ND80ND

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
2012-01-162576834-35ND
2012-04-252630423-24ND
2012-07-312685237-38ND
2012-12-042749134-35ND
2013-01-302772271-72ND
2013-04-222812712-13ND
2013-08-072872825-26ND
2013-10-092910727-28ND
2013-10-092910729-30ND
2014-01-072954185-86ND
2014-01-072954183-84ND
2014-04-083004512,14ND
2014-04-083004511,13ND
2014-07-083058535-36ND
2014-07-083058537-38ND
2014-10-063117873,75ND
2014-10-063117872,74ND
2015-01-123167943,46ND
2015-01-123167944,47ND
2015-04-073219918-19ND
2015-04-073219916-17ND
2015-07-063274036-37ND
2015-07-063274034-35ND
2015-10-063336328-29ND
2015-10-063336330-31ND
2016-01-143386258,60ND
2016-01-143386257,59ND
2016-04-063426433-34ND
2016-04-063426435-36ND
2016-07-113490596-971.000 ppb
2016-07-113490594-951.000 ppb
2016-10-033558694-95ND
2016-10-033558696-97ND
2017-01-103619833-34ND
2017-01-103619831-32ND
2017-04-243682199-200ND
2017-04-243682201-02ND
2017-07-053726745-46ND
2017-07-053726743-44ND
2017-10-093796072-73ND
2017-10-093796074-75ND