Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Batavia

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

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015ND50ND
2016ND20ND
2017ND20ND
201814.7 ppb21ND - 29.3 ppb
2019ND20ND

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
2014-01-101401296-002BND
2014-01-101401296-003BND
2014-01-101401296-004BND
2014-01-101401296-001BND
2014-04-091404476-001BND
2014-04-091404476-002BND
2014-04-091404476-003BND
2014-04-091404476-004BND
2014-07-081407417-001BND
2014-07-081407417-002BND
2014-07-081407417-003BND
2014-07-081407417-004BND
2015-07-141507B25-001BND
2015-07-141507B25-004BND
2015-07-141507B25-003BND
2015-07-141507B25-002BND
2015-10-191510F36-001BND
2016-07-131607A01-001BND
2016-10-111610813-001BND
2017-07-121707834-001BND
2017-10-111710913-001BND
2018-07-111807607-001BND
2018-10-101810812-001B29.3 ppb
2019-07-091907521-001BND
2019-10-211910H16-001BND