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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

City of Riverton

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

 

42

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND280ND
2014ND140ND
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
2013-02-05100457PND
2013-02-05100456PND
2013-02-05100455PND
2013-02-05100454PND
2013-02-05100453PND
2013-02-05100452PND
2013-02-05100451PND
2013-02-05100450PND
2013-02-05100449PND
2013-02-05100448PND
2013-02-05100447PND
2013-02-05100446PND
2013-02-05100445PND
2013-05-08101417QND
2013-08-05101991PND
2013-08-05101992PND
2013-08-05101993PND
2013-08-05101994PND
2013-08-05101995PND
2013-08-05101996PND
2013-08-05101997PND
2013-08-05101998PND
2013-08-05101999PND
2013-08-05102000PND
2013-08-05102001PND
2013-08-05102003PND
2013-08-05102004PND
2013-08-26102197RND
2014-07-14C14070510-003LND
2014-07-14C14070510-002LND
2014-07-14C14070510-001LND
2014-07-14C14070510-014LND
2014-07-14C14070510-013LND
2014-07-14C14070510-012LND
2014-07-14C14070510-011LND
2014-07-14C14070510-010LND
2014-07-14C14070510-009LND
2014-07-14C14070510-008LND
2014-07-14C14070510-007LND
2014-07-14C14070510-006LND
2014-07-14C14070510-005LND
2014-07-14C14070510-004LND