Know Your Environment. Protect Your Health.

Chloromethane

Rio Brazos Water Supply Corporation

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.

 

14

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
2022ND20ND
2023ND40ND

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
2018-09-24Q1838018007ND
2018-09-24Q1838018008ND
2019-09-23Q1967408003ND
2019-09-23Q1967408008ND
2020-08-03Q2030183001ND
2020-08-03Q2030183003ND
2021-03-31Q2108168006ND
2021-03-31Q2108168008ND
2022-11-30Q2235879002ND
2022-11-30Q2235879004ND
2023-06-08Q2321728001ND
2023-06-08Q2321728011ND
2023-08-17Q2334702001ND
2023-12-15Q2354044001ND