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EWG's Tap Water Database — 2019 UPDATE

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Monochloroacetic acid

City of Royse City

NOTE: City of Royse City purchases water from North Texas Municipal Water District Wylie Water Treatment Plant which is required to test for monochloroacetic acid. Sample information shown below was taken by North Texas Municipal Water District Wylie Water Treatment Plant.

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.681 ppb163ND - 6.80 ppb
20130.125 ppb161ND - 2.00 ppb
20140.344 ppb162ND - 3.30 ppb
20152.34 ppb167ND - 10.1 ppb
2016ND160ND
20172.73 ppb164ND - 14.3 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

NOTE: City of Royse City purchases water from North Texas Municipal Water District Wylie Water Treatment Plant which is required to test for monochloroacetic acid. Sample information shown below was taken by North Texas Municipal Water District Wylie Water Treatment Plant.

Date Lab ID Result
2012-02-071202248007ND
2012-02-0712022480062.10 ppb
2012-06-0612061840112.30 ppb
2012-06-0612061840102.70 ppb
2012-07-3012080100112.10 ppb
2012-07-3012080100122.10 ppb
2012-11-071211261004ND
2012-11-071211261003ND
2013-02-271302906025ND
2013-02-271302906024ND
2013-04-291304A06013ND
2013-04-291304A06012ND
2013-07-24Q1304404002ND
2013-07-24Q1304404001ND
2013-10-16Q1308972002ND
2013-10-16Q1308972001ND
2014-02-10Q1404125001ND
2014-02-10Q1404125002ND
2014-09-26Q1449090001ND
2015-05-21Q1518817009ND
2016-09-06Q1635670007ND
2017-06-22Q1726245010ND