Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

Monochloroacetic acid

Paw Paw Water Works

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
20140.338 ppb41ND - 1.35 ppb
2015ND40ND
20160.1000 ppb41ND - 0.400 ppb
2017ND40ND
20180.420 ppb51ND - 2.10 ppb
20190.350 ppb41ND - 1.40 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
2014-02-18DBP_1402L34-01A1.35 ppb
2014-06-10DBP_213662-2014-ND
2014-08-20DBP_217232-2014-ND
2014-11-12S2DBP_222157-201ND
2015-02-10S2DBP_226400-201ND
2015-05-14S2DBP_230861-201ND
2015-08-23S2DBP_236062-201ND
2015-11-18240603-2015-DWND
2016-02-16244193-2016-DWND
2016-05-17248458-2016-DW0.400 ppb
2016-08-16253924-2016-DWND
2016-11-15258906-2016-DWND
2017-02-14262987-2017-DWND
2017-05-16267617-2017-DWND
2017-08-21272836-2017-DWND
2017-11-13277322-2017-DWND
2018-02-10281159-2018-DW2.10 ppb
2018-05-08285597-2018-DWND
2018-07-24290818-2018-DWND
2018-08-13292182-2018-DWND
2018-11-20297351-2018-DWND
2019-02-07300572-2019-DWND
2019-05-22306137-2019-DWND
2019-08-05309925-2019-DWND
2019-11-067375170031.40 ppb