Know Your Environment. Protect Your Health.

Chloromethane

Follett Municipal Water System

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
2018ND20ND
2019ND20ND
2020ND20ND
2021ND20ND
2022ND30ND
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
2018-02-20Q1806937002ND
2018-02-20Q1806937004ND
2019-06-19Q1937760003ND
2019-06-19Q1937760005ND
2020-02-25Q2006921001ND
2020-05-05Q2017204001ND
2021-02-03Q2103373003ND
2021-07-27Q2119584009ND
2022-02-01Q2203742002ND
2022-08-18Q2224571002ND
2022-10-20Q2231941002ND
2023-01-11Q2301868001ND
2023-01-11Q2301868003ND