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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Town of Gilbert

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND340ND
2014ND20ND
2015ND20ND
2016N/A00N/A
2017N/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
2013-04-22201304220129AMND
2013-04-22201304220123AMND
2013-04-22201304220127AMND
2013-04-22201304220125AMND
2013-04-22201304220110AMND
2013-04-22201304220119AMND
2013-04-22201304220108AMND
2013-04-22201304220121AMND
2013-04-23201304230213AMND
2013-04-23201304230215AMND
2013-04-23201304230211AMND
2013-04-24201304240157AMND
2013-04-24201304240159AMND
2013-04-24201304240155AMND
2013-04-25201304250474AMND
2013-04-25201304250476AMND
2013-07-25201307250327AMND
2013-07-25201307250331AMND
2013-10-14201310140276AMND
2013-10-14201310140284AMND
2013-10-14201310140278AMND
2013-10-14201310140288AMND
2013-10-14201310140286AMND
2013-10-15201310150546AMND
2013-10-15201310150552AMND
2013-10-15201310150548AMND
2013-10-15201310150550AMND
2013-10-16201310160453AMND
2013-10-16201310160451AMND
2013-10-22201310220322AMND
2013-10-22201310220324AMND
2013-10-22201310220320AMND
2013-10-23201310230754AMND
2013-10-23201310230756AMND
2014-01-09201401090391AMND
2014-01-21201401210278AMND
2015-06-15201506150309AMND
2015-12-13201512140112AMND