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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Muskegon

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.

 

13

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND30ND
2016N/A00N/A
2017N/A00N/A
2018ND40ND
2019ND40ND

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
2014-02-05LLF08727ND
2014-10-092033814003ND
2015-01-192050265003ND
2015-04-092064397003ND
2015-07-292086123003ND
2018-02-20LLH67116ND
2018-05-22LLH81953ND
2018-08-28LLI01987ND
2018-11-12LLI15157ND
2019-02-19LLI26316ND
2019-05-28LLI39791ND
2019-08-22LLI58887ND
2019-11-19LLI78155ND