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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

City of Scottsdale

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.

 

22

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
2013N/A00N/A
2014ND210ND
2015ND10ND
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
2014-02-10201402100091AMND
2014-02-10201402100089AMND
2014-02-10201402100087AMND
2014-02-10201402100085AMND
2014-02-11201402120493AMND
2014-02-12201402120499AMND
2014-02-13201402130341AMND
2014-02-13201402130339AMND
2014-05-14201405140673AMND
2014-05-14201405140663AMND
2014-08-05201408050563AMND
2014-08-05201408050592AMND
2014-08-05201408050565AMND
2014-08-07201408070363AMND
2014-08-14201408140538AMND
2014-08-21201408220384AMND
2014-08-26201408260309AMND
2014-08-27201408270707AMND
2014-09-09201409090433AMND
2014-11-10201411100059AMND
2014-11-10201411100071AMND
2015-03-05201503050032AMND