Chloromethane
City of Spokane
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.
30
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 |
|---|---|---|---|---|
| 2015 | ND | 10 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 10 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 3 | 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 |
|---|---|---|
| 2015-03-23 | 150324054-002 | ND |
| 2015-03-23 | 150324054-003 | ND |
| 2015-03-23 | 150324054-001 | ND |
| 2015-03-23 | 150324054-005 | ND |
| 2015-03-23 | 150324054-004 | ND |
| 2015-09-28 | 150930003-008 | ND |
| 2015-09-28 | 150930003-006 | ND |
| 2015-09-28 | 150930003-007 | ND |
| 2015-09-28 | 150930003-009 | ND |
| 2015-09-28 | 150930003-010 | ND |
| 2018-01-30 | ND | |
| 2018-01-30 | ND | |
| 2018-07-17 | ND | |
| 2019-07-23 | ND | |
| 2019-07-23 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2019-07-26 | ND | |
| 2021-01-26 | 4066969 | ND |
| 2021-01-26 | 4066970 | ND |
| 2021-07-27 | 4195356 | ND |
| 2022-07-26 | 4319393 | ND |
| 2022-07-26 | 4319391 | ND |
| 2023-01-24 | 4399432 | ND |
| 2023-07-25 | 4507772 | ND |