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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Terrell

NOTE: City of Terrell 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.

MORE ABOUT THIS CONTAMINANT

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND10ND
2016ND30ND
2017ND20ND
2018ND30ND
2019ND30ND

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 Terrell 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
2014-08-01Q1433373008ND
2014-08-01Q1433373006ND
2014-08-01Q1433373004ND
2015-09-18Q1536877003ND
2015-09-18Q1536877005ND
2015-09-18Q1536877001ND
2016-09-06Q1635670001ND
2016-09-06Q1635670006ND
2016-09-06Q1635670004ND
2017-09-26Q1746572004ND
2017-09-26Q1746572002ND
2018-09-17Q1836833016ND
2018-09-17Q1836833014ND
2018-09-17Q1836833012ND
2019-01-15Q1902044002ND
2019-08-02Q1950721001ND
2019-08-02Q1950721003ND