Chloromethane
Maple Bluff Waterworks
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 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-08-02 | 398373001 | ND |
| 2018-08-02 | 398375001 | ND |
| 2019-08-01 | 460856001 | ND |
| 2019-08-01 | 460857001 | ND |
| 2020-08-10 | 518995001 | ND |
| 2020-08-10 | 518994001 | ND |
| 2021-09-21 | 585000001 | ND |
| 2021-09-21 | 585001001 | ND |
| 2022-02-07 | 604608001 | ND |
| 2022-04-13 | 613891001 | ND |
| 2022-08-08 | 635376001 | ND |
| 2022-08-08 | 635377001 | ND |
| 2022-10-17 | 648739001 | ND |
| 2023-08-01 | 692027001 | ND |
| 2023-08-01 | 692024001 | ND |
| 2023-10-24 | 707622001 | ND |