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EWG's Tap Water Database — 2019 UPDATE

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Chloromethane

Salt Lake City 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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.30 ppb111.30 ppb
20130.330 ppb332ND - 9.30 ppb
2014ND170ND
2015N/A00N/A
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 Result
2012-07-171.30 ppb
2013-01-251.60 ppb
2013-02-12ND
2013-02-12ND
2013-02-12ND
2013-02-12ND
2013-02-12ND
2013-05-14ND
2013-05-14ND
2013-05-159.30 ppb
2013-06-04ND
2013-06-04ND
2013-06-04ND
2013-06-04ND
2013-06-18ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-13ND
2013-08-27ND
2013-08-27ND
2013-08-27ND
2013-12-06ND
2013-12-18ND
2014-01-06ND
2014-01-06ND
2014-01-10ND
2014-05-30ND
2014-05-30ND
2014-06-03ND
2014-06-06ND
2014-06-11ND
2014-06-25ND
2014-06-25ND
2014-07-01ND
2014-07-01ND
2014-07-02ND
2014-07-09ND
2014-07-09ND
2014-07-09ND
2014-07-11ND