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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Town of Warrenton

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
20140.713 ppb167ND - 2.30 ppb
20150.525 ppb163ND - 3.20 ppb
20161.04 ppb168ND - 3.10 ppb
20171.36 ppb1611ND - 2.80 ppb
20181.16 ppb1610ND - 2.60 ppb
20190.156 ppb162ND - 1.30 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
2014-02-18E131207388ND
2014-02-18E131207397ND
2014-02-18E131207394ND
2014-02-18E131207395ND
2014-05-27E140500849ND
2014-05-27E140500851ND
2014-05-27E140500853ND
2014-05-27E1405008471.90 ppb
2014-08-19E1406060251.60 ppb
2014-08-19E1406060351.80 ppb
2014-08-19E140606033ND
2014-08-19E1406060362.30 ppb
2014-11-18E1409032671.10 ppb
2014-11-18E1409032621.40 ppb
2014-11-18E140903263ND
2014-11-18E1409032641.30 ppb
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-02-18VA010-DCLSND
2015-05-19VA010-DCLSND
2015-05-19VA010-DCLSND
2015-05-19VA010-DCLSND
2015-05-19VA010-DCLSND
2015-08-18VA010-DCLS2.30 ppb
2015-08-18VA010-DCLS2.90 ppb
2015-08-18VA010-DCLS3.20 ppb
2015-08-18VA010-DCLSND
2015-11-17VA010-DCLSND
2015-11-17VA010-DCLSND
2015-11-17VA010-DCLSND
2015-11-17VA010-DCLSND
2016-02-16E151205733ND
2016-02-16E151205725ND
2016-02-16E151205730ND
2016-02-16E151205731ND
2016-05-17E160301584ND
2016-05-17E160301579ND
2016-05-17E160301577ND
2016-05-17E160301576ND
2016-08-16E1606039762.80 ppb
2016-08-16E1606039802.40 ppb
2016-08-16E1606039772.20 ppb
2016-08-16E1606039843.10 ppb
2016-11-15E1609031271.30 ppb
2016-11-15E1609031361.40 ppb
2016-11-15E1609031381.50 ppb
2016-11-15E1609031311.90 ppb
2017-02-21E161205915ND
2017-02-21E161205914ND
2017-02-21E161205920ND
2017-02-21E161205916ND
2017-05-16E170304461ND
2017-05-16E1703044691.70 ppb
2017-05-16E1703044711.80 ppb
2017-05-16E1703044671.80 ppb
2017-08-15E1706083942.20 ppb
2017-08-15E1706083972.60 ppb
2017-08-15E1706084012.70 ppb
2017-08-15E1706083952.80 ppb
2017-11-20E1709025291.50 ppb
2017-11-20E1709025261.60 ppb
2017-11-20E1709025271.40 ppb
2017-11-20E1709025311.60 ppb
2018-02-20E1712046311.000 ppb
2018-02-20E1712046291.40 ppb
2018-02-20E1712046271.40 ppb
2018-02-20E1712046221.60 ppb
2018-05-15E1803062971.80 ppb
2018-05-15E1803062922.00 ppb
2018-05-15E1803062952.30 ppb
2018-05-15E1803062962.10 ppb
2018-08-22E1807024732.60 ppb
2018-08-22E180702471ND
2018-08-22E1807024692.40 ppb
2018-08-22E180702468ND
2018-11-19E180905409ND
2018-11-19E180905411ND
2018-11-19E180905413ND
2018-11-19E180905416ND
2019-02-19E181206784ND
2019-02-19E181206790ND
2019-02-19E181206792ND
2019-02-19E181206795ND
2019-05-21E190308247ND
2019-05-21E1903082521.30 ppb
2019-05-21E1903082501.20 ppb
2019-05-21E190308249ND
2019-08-20E190610069ND
2019-08-20E190610074ND
2019-08-20E190610073ND
2019-08-20E190610066ND
2019-11-19E191002074ND
2019-11-19E191002060ND
2019-11-19E191002058ND
2019-11-19E191002056ND