Chloromethane
East Montgomery County MUD 4
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.
10
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 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 8 | 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 |
|---|---|---|
| 2022-03-08 | AF88066 | ND |
| 2022-03-08 | AF88068 | ND |
| 2022-04-13 | AF93154 | ND |
| 2022-04-13 | AF93156 | ND |
| 2022-07-11 | AG04066 | ND |
| 2022-07-11 | AG04068 | ND |
| 2022-10-18 | AG17488 | ND |
| 2022-10-18 | AG17492 | ND |
| 2023-05-10 | AG40023 | ND |
| 2023-05-10 | AG40033 | ND |