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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Tucson

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

 

52

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND520ND
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

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

Date Lab ID Result
2013-04-15201304160054AMND
2013-04-15201304160056AMND
2013-04-15201304160052AMND
2013-04-15201304160050AMND
2013-04-16201304180590AMND
2013-04-16201304180588AMND
2013-04-16201304180586AMND
2013-04-16201304180594AMND
2013-04-17201304190458AMND
2013-04-17201304190460AMND
2013-04-17201304190462AMND
2013-04-22201304240199AMND
2013-04-22201304240197AMND
2013-04-22201304240201AMND
2013-04-22201304240203AMND
2013-04-23201304250525AMND
2013-04-23201304250523AMND
2013-04-23201304250529AMND
2013-04-23201304250527AMND
2013-04-24201304260164AMND
2013-04-24201304260162AMND
2013-04-24201304260166AMND
2013-04-29201305010447AMND
2013-04-29201305020190AMND
2013-04-29201305010449AMND
2013-04-29201305010451AMND
2013-10-08201310110331AMND
2013-10-08201310120150AMND
2013-10-08201310110335AMND
2013-10-08201310110333AMND
2013-10-08201310120152AMND
2013-10-08201310110337AMND
2013-10-09201310120156AMND
2013-10-09201310120158AMND
2013-10-09201310120162AMND
2013-10-09201310120154AMND
2013-10-09201310120160AMND
2013-10-14201310150054AMND
2013-10-14201310150056AMND
2013-10-14201310150052AMND
2013-10-14201310150058AMND
2013-10-16201310170126AMND
2013-10-16201310170118AMND
2013-10-16201310170124AMND
2013-10-16201310170120AMND
2013-10-16201310170122AMND
2013-10-17201310180353AMND
2013-10-17201310180359AMND
2013-10-17201310180357AMND
2013-10-29201310300082AMND
2013-11-13201311140823AMND
2013-11-20201311220543AMND