Know Your Environment. Protect Your Health.

Chloromethane

Cross Valley Water District

NOTE: Cross Valley Water District purchases water from City of Everett Public Works Department which is required to test for chloromethane. Sample information shown below was taken by City of Everett Public Works Department.

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND100ND
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND50ND
2019ND10ND
2020N/A00N/A
2021ND10ND
2022ND10ND
2023ND10ND

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

NOTE: Cross Valley Water District purchases water from City of Everett Public Works Department which is required to test for chloromethane. Sample information shown below was taken by City of Everett Public Works Department.

Date Lab ID Result
2014-01-23201401240052AMND
2014-04-16201404180338AMND
2014-07-22201407230532AMND
2014-10-15201410160323AMND
2018-06-12ND
2019-06-11ND
2021-06-284139234ND
2022-06-224325407ND
2023-06-154531531ND