Chloromethane
Cold Creek Studios
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.
7
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 | 0.867 ppb | 3 | 1 | ND - 2.60 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.453 ppb | 4 | 2 | ND - 1.30 ppb |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
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 |
|---|---|---|
| 2018-03-30 | L1811254-02POCS | ND |
| 2018-03-30 | L1811256-01POC | 2.60 ppb |
| 2018-07-17 | EHS1800030882-01POC | ND |
| 2021-04-01 | L2116770-01 | 0.510 ppb |
| 2021-04-01 | L2116770-02 | 1.30 ppb |
| 2021-04-26 | L2121342-02 | ND |
| 2021-04-26 | L2121342-01 | ND |