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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

St Albans Water

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

 

108

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND160ND
2015ND160ND
2016ND190ND
2017ND190ND
2018ND190ND
2019ND190ND

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
2014-02-06S2HAA_21403802ND
2014-02-06S2HAA_21403803ND
2014-02-06S2HAA_21403804ND
2014-02-06S2HAA_21403805ND
2014-05-08S2HAA_21412902ND
2014-05-08S2HAA_21412903ND
2014-05-08S2HAA_21412904ND
2014-05-08S2HAA_21412905ND
2014-08-27S2HAA_21424002ND
2014-08-27S2HAA_21424003ND
2014-08-27S2HAA_21424004ND
2014-08-27S2HAA_21424005ND
2014-11-13S2HAA_21431812ND
2014-11-13S2HAA_21431813ND
2014-11-13S2HAA_21431814ND
2014-11-13S2HAA_21431815ND
2015-02-12S2HAA_21504459ND
2015-02-12S2HAA_21504460ND
2015-02-12S2HAA_21504461ND
2015-02-12S2HAA_21504462ND
2015-05-12S2HAA_21513302ND
2015-05-12S2HAA_21513303ND
2015-05-12S2HAA_21513304ND
2015-05-12S2HAA_21513305ND
2015-08-13S2HAA_21522544ND
2015-08-13S2HAA_21522545ND
2015-08-13S2HAA_21522546ND
2015-08-13S2HAA_21522547ND
2015-11-1621532102ND
2015-11-1621532103ND
2015-11-1621532104ND
2015-11-1621532105ND
2016-02-1621604809ND
2016-02-1621604810ND
2016-02-1621604811ND
2016-02-1621604812ND
2016-02-1621604813ND
2016-05-1921614102ND
2016-05-1921614103ND
2016-05-1921614104ND
2016-05-1921614105ND
2016-08-17216231-45ND
2016-08-17216231-46ND
2016-08-17216231-47ND
2016-08-17216231-48ND
2016-08-17216231-49ND
2016-11-09216315-03ND
2016-11-09216315-04ND
2016-11-09216315-05ND
2016-11-09216315-06ND
2016-11-09216316-02ND
2017-02-08217040-12ND
2017-02-08217040-13ND
2017-02-08217040-14ND
2017-02-08217040-15ND
2017-02-08217040-16ND
2017-05-15217136-02ND
2017-05-15217136-03ND
2017-05-15217136-04ND
2017-05-15217136-05ND
2017-05-15217136-06ND
2017-08-16217229-02ND
2017-08-16217229-03ND
2017-08-16217229-04ND
2017-08-16217229-05ND
2017-08-16217229-06ND
2017-11-15217320-50ND
2017-11-15217320-51ND
2017-11-15217320-52ND
2017-11-15217320-53ND
2018-02-14218046-02ND
2018-02-14218046-03ND
2018-02-14218046-04ND
2018-02-14218046-05ND
2018-02-14218046-06ND
2018-05-24218145-02ND
2018-05-24218145-03ND
2018-05-24218145-04ND
2018-05-24218145-05ND
2018-05-24218145-06ND
2018-08-22218235-02ND
2018-08-22218235-03ND
2018-08-22218235-04ND
2018-08-22218235-05ND
2018-08-22218235-06ND
2018-11-14218319-02ND
2018-11-14218319-03ND
2018-11-14218319-04ND
2018-11-14218319-05ND
2019-02-19219051-02ND
2019-02-19219051-03ND
2019-02-19219051-04ND
2019-02-19219051-05ND
2019-05-13219134-02ND
2019-05-13219134-03ND
2019-05-13219134-04ND
2019-05-13219134-05ND
2019-05-13219134-11ND
2019-08-07219220-18ND
2019-08-07219220-19ND
2019-08-07219220-20ND
2019-08-07219220-21ND
2019-08-07219220-22ND
2019-11-12219317-02ND
2019-11-12219317-03ND
2019-11-12219317-04ND
2019-11-12219317-05ND
2019-11-12219317-06ND