Know Your Environment. Protect Your Health.

Chloromethane

Port Orchard Water 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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2015ND110ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND10ND
2020N/A00N/A
2021N/A00N/A
2022ND10ND
2023ND20ND

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
2015-01-26B5A2436-04ND
2015-01-26B5A2436-01ND
2015-01-26B5A2436-07ND
2015-01-26B5A2436-10ND
2015-01-28B5A2687-01ND
2015-04-06B5D0545-01ND
2015-07-06B5G0536-01ND
2015-07-06B5G0540-01ND
2015-07-06B5G0536-04ND
2015-07-06B5G0536-07ND
2015-10-13B5J1338-01ND
2019-05-22ND
2022-03-174260748ND
2023-05-014452810ND
2023-05-014452811ND