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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

City of Chesapeake - Western Branch System

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

 

56

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015ND80ND
2016ND40ND
2017ND160ND
20180.525 ppb163ND - 3.20 ppb
20191.87 ppb127ND - 4.70 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
2015-03-05VA010-DCLSND
2015-03-05VA010-DCLSND
2015-03-05VA010-DCLSND
2015-03-05VA010-DCLSND
2015-06-03460013-JAMES R.ND
2015-06-03460013-JAMES R.ND
2015-06-03460013-JAMES R.ND
2015-06-06460013-JAMES R.ND
2016-12-0616-21877-HAAND
2016-12-0616-21878-HAAND
2016-12-0616-21876-HAAND
2016-12-0616-21875-HAAND
2017-03-0617-04070-HAAND
2017-03-0617-04071-HAAND
2017-03-0617-04072-HAAND
2017-03-0617-04073-HAAND
2017-06-0517-09898-HAAND
2017-06-0517-09897-HAAND
2017-06-0517-09896-HAAND
2017-06-0517-09895-HAAND
2017-09-0517-16196-HAAND
2017-09-0517-16199-HAAND
2017-09-0517-16198-HAAND
2017-09-0517-16197-HAAND
2017-12-04217340-23ND
2017-12-04217340-24ND
2017-12-04217340-21ND
2017-12-04217340-22ND
2018-03-05218066-05ND
2018-03-05218066-04ND
2018-03-05218066-03ND
2018-03-05218066-02ND
2018-06-04218157-23ND
2018-06-04218157-20ND
2018-06-04218157-21ND
2018-06-04218157-22ND
2018-09-0418100910-01HAAND
2018-09-0418100910-02HAAND
2018-09-0418100910-03HAAND
2018-09-0418100910-04HAAND
2018-12-0318121001-01HAA2.60 ppb
2018-12-0318121001-02HAA3.20 ppb
2018-12-0318121001-03HAA2.60 ppb
2018-12-0318121001-04HAAND
2019-03-0419030705-01H2.30 ppb
2019-03-0419030705-02H2.00 ppb
2019-03-0419030705-03H2.10 ppb
2019-03-0419030705-04HND
2019-09-0319090410-02HND
2019-09-0319090410-04HND
2019-09-0319090410-03HND
2019-09-0319090410-01HND
2019-12-0219120601-043.20 ppb
2019-12-0219120601-03H4.70 ppb
2019-12-0219120601-02H3.80 ppb
2019-12-0219120601-01H4.30 ppb