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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

Comanche County Rural Water District #4

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.750 ppb41ND - 3.00 ppb
2013ND20ND
20142.54 ppb84ND - 6.90 ppb
2015ND50ND
2016ND60ND
20173.00 ppb86ND - 6.30 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
2013-11-04036077.004ND
2013-11-04036077.002ND
2014-01-28039300.004ND
2014-01-28039300.002ND
2014-04-22042019.004ND
2014-04-22042019.002ND
2014-07-14045564.0043.60 ppb
2014-07-14045564.0023.70 ppb
2014-10-21049617.0046.90 ppb
2014-10-21049617.0026.10 ppb
2015-01-211366724ND
2015-01-211366721ND
2015-07-151410947ND
2015-10-201410949ND
2015-10-201437020ND
2016-01-201461144ND
2016-01-201461142ND
2016-04-061480536ND
2016-04-061480534ND
2016-10-03108964405ND
2016-10-03108964404ND
2017-01-17111586604ND
2017-01-17111586504ND
2017-04-171142977042.90 ppb
2017-04-171142976042.80 ppb
2017-07-111168782046.00 ppb
2017-07-111168781046.30 ppb
2017-10-171201638043.10 ppb
2017-10-171201639042.90 ppb