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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Norfolk Naval Shipyard

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

 

79

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND160ND
20160.333 ppb122ND - 2.00 ppb
2017ND160ND
20180.375 ppb162ND - 4.00 ppb
20190.200 ppb152ND - 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
2014-11-0614-16896-HAAND
2014-11-0614-16893-HAAND
2014-11-0614-16895-HAAND
2014-11-0614-16894-HAAND
2015-02-09460013-JAMES R.ND
2015-02-09460013-JAMES R.ND
2015-02-09460013-JAMES R.ND
2015-02-09460013-JAMES R.ND
2015-05-07460013-JAMES R.ND
2015-05-07460013-JAMES R.ND
2015-05-07460013-JAMES R.ND
2015-05-07460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-08-20460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2015-11-12460013-JAMES R.ND
2016-05-0616-07933-HAAND
2016-05-0616-07934-HAAND
2016-05-0616-07935-HAAND
2016-05-0616-07936-HAAND
2016-08-0516-13906-HAA2.00 ppb
2016-08-0516-13905-HAAND
2016-08-0516-13904-HAAND
2016-08-0516-13903-HAAND
2016-11-1416-20416-HAAND
2016-11-1416-20419-HAA2.00 ppb
2016-11-1416-20417-HAAND
2016-11-1416-20418-HAAND
2017-02-1017-02505-HAAND
2017-02-1017-02508-HAAND
2017-02-1017-02504-HAAND
2017-02-1017-02503-HAAND
2017-05-0417-07614-HAAND
2017-05-0417-07615-HAAND
2017-05-0417-07612-HAAND
2017-05-0417-07613-HAAND
2017-08-1017-14133-HAAND
2017-08-1017-14134-HAAND
2017-08-1017-14135-HAAND
2017-08-1017-14136-HAAND
2017-11-1417-21286-HAAND
2017-11-1417-21283-HAAND
2017-11-1417-21284-HAAND
2017-11-1417-21285-HAAND
2018-02-1318-02578HAAND
2018-02-1318-02575HAAND
2018-02-1318-02574HAAND
2018-02-1318-02573HAAND
2018-05-1018-08252-HAAND
2018-05-1018-08250-HAAND
2018-05-1018-08249-HAAND
2018-05-1018-08251-HAAND
2018-08-0118-15217-HAAND
2018-08-0118-15210-HAAND
2018-08-0118-15208-HAAND
2018-08-0118-15209-HAAND
2018-11-0518-21843-HAAND
2018-11-0518-21844-HAAND
2018-11-0518-21845-HAA2.00 ppb
2018-11-0518-21848-HAA4.00 ppb
2019-02-1419-02625-HAAND
2019-02-1419-02626-HAAND
2019-02-1419-02627-HAAND
2019-02-1419-02630-HAAND
2019-05-0119-07433-HAAND
2019-05-0119-07437-HAAND
2019-05-0119-07434-HAAND
2019-05-0119-07432-HAAND
2019-08-0519-13849HND
2019-08-0519-13850HND
2019-08-0519-13848HND
2019-11-0419-19803HND
2019-11-0419-19801HND
2019-11-0419-198012H2.00 ppb
2019-11-0419-19800H1.000 ppb