Chloromethane
Shorewood Hills 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.
14
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 | 4 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 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 |
|---|---|---|
| 2018-11-19 | 420369001 | ND |
| 2018-11-19 | 420372001 | ND |
| 2019-11-18 | 481795001 | ND |
| 2019-11-18 | 481819001 | ND |
| 2019-12-09 | 484892001 | ND |
| 2019-12-09 | 484891001 | ND |
| 2020-11-16 | 536139001 | ND |
| 2020-11-16 | 536137001 | ND |
| 2021-11-16 | 594754001 | ND |
| 2021-11-16 | 594760001 | ND |
| 2022-11-21 | 654127001 | ND |
| 2022-11-21 | 654126001 | ND |
| 2023-12-08 | 713887001 | ND |
| 2023-12-08 | 713883001 | ND |