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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Northwest Forest Municipal Utility District

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.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015ND40ND
2016ND30ND
2017ND40ND
20180.850 ppb41ND - 3.40 ppb
20191.93 ppb42ND - 5.30 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
2014-02-18AC43316ND
2014-06-03AC55868ND
2014-08-18AC64098ND
2014-12-12AC74875ND
2015-03-25AC86023ND
2015-06-23AC97085ND
2015-09-25AD08701ND
2015-11-30AD14722ND
2016-02-16AD23607ND
2016-04-27AD34368ND
2016-09-30AD52264ND
2017-03-29AD77404ND
2017-05-09AD83293ND
2017-08-24AD94145ND
2017-11-20AE05376ND
2018-01-25AE10498ND
2018-04-10AE218423.40 ppb
2018-07-16AE33503ND
2018-10-24AE44478ND
2019-02-26AE559282.40 ppb
2019-06-05AE694515.30 ppb
2019-08-22AE80203ND
2019-12-17AE92555ND