Chloromethane
Encinal Water Supply 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.
19
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 | 6 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 3 | 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 |
|---|---|---|
| 2018-07-19 | AE33973 | ND |
| 2018-07-19 | AE33965 | ND |
| 2019-09-26 | AE84864 | ND |
| 2019-12-11 | AE92154 | ND |
| 2020-03-24 | AF04315 | ND |
| 2020-03-24 | AF04317 | ND |
| 2020-03-24 | AF04319 | ND |
| 2020-06-08 | AF14872 | ND |
| 2020-07-20 | AF19932 | ND |
| 2020-12-10 | AF37297 | ND |
| 2021-08-04 | AF64835 | ND |
| 2021-08-04 | AF64837 | ND |
| 2021-12-22 | AF79284 | ND |
| 2022-09-29 | AG15510 | ND |
| 2022-09-29 | AG15512 | ND |
| 2022-09-29 | AG15514 | ND |
| 2023-09-14 | AG56310 | ND |
| 2023-09-14 | AG56314 | ND |
| 2023-09-14 | AG56318 | ND |