Know Your Environment. Protect Your Health.

Chloromethane

City of Cornelius

NOTE: City of Cornelius purchases water from City of Hillsboro which is required to test for chloromethane. Sample information shown below was taken by City of Hillsboro.

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.

 

4

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

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

NOTE: City of Cornelius purchases water from City of Hillsboro which is required to test for chloromethane. Sample information shown below was taken by City of Hillsboro.

Date Lab ID Result
2013-07-15WA97-SE1-13-12517-28354ND
2013-10-14WA97-SE2-19683-44636ND
2014-04-16WA97-SE4-14-06653-16042ND
2014-12-22WA97-SE3-14-24986-56735ND