Chloromethane
Greenleaf 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.
4
Samples
0
Samples exceeding legal limit (MCL)
4
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 3.75 ppb | 2 | 2 | 3.60 ppb - 3.90 ppb |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | 3.65 ppb | 2 | 2 | 2.90 ppb - 4.40 ppb |
| 2021 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2018-08-07 | 1072532 | 3.60 ppb |
| 2018-08-07 | 1072533 | 3.90 ppb |
| 2020-08-11 | 1206810 | 2.90 ppb |
| 2020-08-11 | 1206809 | 4.40 ppb |