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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

The Woodlands Municipal Utility District 1

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

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND10ND
20160.825 ppb41ND - 3.30 ppb
20170.975 ppb83ND - 2.80 ppb
20180.463 ppb81ND - 3.70 ppb
2019ND80ND

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
2014-06-30AC58476ND
2015-05-20AC92777ND
2016-09-29AD519713.30 ppb
2016-11-30AD59571ND
2016-11-30AD59570ND
2016-11-30AD59569ND
2017-01-25AD667282.70 ppb
2017-01-25AD66746ND
2017-04-19AD801212.30 ppb
2017-04-19AD801222.80 ppb
2017-07-19AD89897ND
2017-07-19AD89896ND
2017-11-02AE03412ND
2017-11-02AE03410ND
2018-02-08AE12970ND
2018-02-08AE12965ND
2018-05-30AE28031ND
2018-05-30AE28030ND
2018-09-13AE40007ND
2018-09-13AE400093.70 ppb
2018-11-20AE46646ND
2018-11-20AE46631ND
2019-02-06AE53133ND
2019-02-06AE53138ND
2019-05-24AE68116ND
2019-05-24AE68113ND
2019-09-16AE83594ND
2019-09-16AE83586ND
2019-11-26AE90572ND
2019-11-26AE90570ND