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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Roswell Municipal Water System

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

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND260ND
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
2013-04-15201304160046AMND
2013-04-15201304160141AMND
2013-04-15201304160162AMND
2013-04-15201304160066AMND
2013-04-15201304160145AMND
2013-04-16201304170625AMND
2013-04-16201304170621AMND
2013-04-16201304170607AMND
2013-04-16201304170629AMND
2013-04-16201304170619AMND
2013-04-17201304180496AMND
2013-04-17201304180493AMND
2013-04-17201304180548AMND
2013-10-16201310180285AMND
2013-10-16201310180291AMND
2013-10-16201310180295AMND
2013-10-16201310180341AMND
2013-10-16201310180283AMND
2013-10-16201310180287AMND
2013-10-16201310180289AMND
2013-10-16201310180328AMND
2013-10-16201310180347AMND
2013-10-16201310180335AMND
2013-10-16201310180299AMND
2013-10-16201310180293AMND
2013-10-16201310180297AMND