Chloromethane
Laurel Mountain Lakes Water Association
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
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 1 | 0 | ND |
| 2019 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 6 | 0 | ND |
| 2023 | ND | 4 | 0 | ND |
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 | Result |
|---|---|
| 2018-08-29 | ND |
| 2019-05-07 | ND |
| 2021-05-04 | ND |
| 2022-04-19 | ND |
| 2022-04-19 | ND |
| 2022-08-17 | ND |
| 2022-08-17 | ND |
| 2022-11-08 | ND |
| 2022-11-08 | ND |
| 2023-02-28 | ND |
| 2023-04-24 | ND |
| 2023-08-01 | ND |
| 2023-11-14 | ND |