Know Your Environment. Protect Your Health.

Chloromethane

Stanley Lake Municipal Utility District

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.

 

23

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
2020ND40ND
2021ND40ND
2022ND60ND
2023ND50ND

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
2018-02-20AE14459ND
2018-02-20AE14433ND
2019-03-04AE56885ND
2019-03-04AE56889ND
2020-08-11AF22868ND
2020-08-11AF22870ND
2020-08-11AF22872ND
2020-11-20AF35494ND
2021-01-14AF39546ND
2021-01-14AF39560ND
2021-01-14AF39570ND
2021-04-14AF50172ND
2022-08-04AG07883ND
2022-08-04AG07885ND
2022-08-04AG07889ND
2022-08-04AG07891ND
2022-10-18AG17399ND
2022-10-18AG17401ND
2023-01-25AG26238ND
2023-01-25AG26240ND
2023-01-25AG26244ND
2023-01-25AG26258ND
2023-04-10AG36106ND