Know Your Environment. Protect Your Health.

Chloromethane

Big Flats Water District #2

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND20ND
2019ND20ND
2020ND60ND
2021ND60ND
2022ND30ND
2023ND30ND

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
2018-04-04R1802920-001POCSND
2018-04-04R1802920-002POCSND
2019-04-03R1902904-002POCSND
2019-04-03R1902904-001POCSND
2020-01-083080420001POCND
2020-04-103096566003POCND
2020-04-103096566002POCND
2020-04-103096566001POCND
2020-07-013112191001POCND
2020-10-073134231001POCND
2021-01-133152400001POCND
2021-04-073168913001POCND
2021-04-073168913003POCND
2021-04-073168913002POCND
2021-07-073187629001ND
2021-10-13R2110762-001POCSND
2022-04-07S2D0298-02POCSND
2022-04-07S2D0298-01POCSND
2022-04-07S2D0298-03POCSND
2023-04-24R2303482-001POCND
2023-04-24R2303482-002POCND
2023-07-19T3G2236-01POCSND