Chloromethane
Carlyon Beach Homeowners
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.
11
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 | 1.17 ppb | 3 | 3 | 0.900 ppb - 1.50 ppb |
| 2019 | ND | 4 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 4 | 0 | ND |
| 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 |
|---|---|---|
| 2018-03-20 | 1.50 ppb | |
| 2018-04-09 | 1.10 ppb | |
| 2018-09-25 | 0.900 ppb | |
| 2019-03-05 | ND | |
| 2019-03-05 | ND | |
| 2019-04-18 | ND | |
| 2019-04-18 | ND | |
| 2022-03-22 | 4278844 | ND |
| 2022-08-22 | 4346840 | ND |
| 2022-09-13 | 4363069 | ND |
| 2022-10-24 | 4374628 | ND |