Chloromethane
Twin Lakes Water Works 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.
16
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 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | ND | 5 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 0 | ND |
| 2023 | ND | 5 | 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 | Lab ID | Result |
|---|---|---|
| 2020-05-12 | CF93587-POCS | ND |
| 2020-05-12 | CF93588-POCS | ND |
| 2020-06-02 | AW10200-POCS | ND |
| 2020-06-02 | AW10202-POCS | ND |
| 2020-10-14 | AW19900-POCS | ND |
| 2021-06-09 | AX11166-POCS | ND |
| 2021-06-09 | AX11168-POCS | ND |
| 2021-10-06 | AX20390-POCS | ND |
| 2022-06-07 | AY09592-POCS | ND |
| 2022-06-07 | AY09590-POCS | ND |
| 2022-10-04 | AY17875-POCS | ND |
| 2023-05-10 | AZ08444-POCS-1 | ND |
| 2023-05-10 | AZ08442-POCS | ND |
| 2023-11-19 | CP51319-POCS | ND |
| 2023-11-19 | CP51318-POCS | ND |
| 2023-12-13 | AZ22568-POCS | ND |