Know Your Environment. Protect Your Health.

Chloromethane

Wildwood Water Association

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.610 ppb330.550 ppb - 0.700 ppb
20190.290 ppb21ND - 0.580 ppb
20201.69 ppb111.69 ppb
2021ND10ND
20220.718 ppb110.718 ppb
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-02-28180600026010.550 ppb
2018-04-30181230056010.580 ppb
2018-09-17182630046010.700 ppb
2019-05-01191210034080.580 ppb
2019-08-1219227000409ND
2020-07-27202120018011.69 ppb
2021-08-3121245002001ND
2022-08-16O200997-VOC-10.718 ppb