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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

City of Murphy

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

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND30ND
2013ND30ND
2014ND30ND
2015ND10ND
2016ND30ND
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

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

Date Lab ID Result
2012-07-301208010007ND
2012-07-301208010005ND
2012-07-301208010003ND
2013-07-24Q1304404007ND
2013-07-24Q1304404006ND
2013-07-24Q1304404003ND
2014-08-01Q1433373008ND
2014-08-01Q1433373006ND
2014-08-01Q1433373004ND
2015-09-18Q1536877003ND
2015-09-18Q1536877005ND
2015-09-18Q1536877001ND
2016-09-06Q1635670006ND
2016-09-06Q1635670004ND
2016-09-06Q1635670001ND
2017-09-26Q1746572004ND
2017-09-26Q1746572002ND