Chloromethane
City of Vancouver
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.
36
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 |
|---|---|---|---|---|
| 2013 | ND | 18 | 0 | ND |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 10 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2013-05-28 | 201305290255AM | ND |
| 2013-05-28 | 201305290241AM | ND |
| 2013-05-28 | 201305290221AM | ND |
| 2013-05-28 | 201305290217AM | ND |
| 2013-05-28 | 201305290260AM | ND |
| 2013-05-28 | 201305290239AM | ND |
| 2013-05-28 | 201305290226AM | ND |
| 2013-05-28 | 201305290223AM | ND |
| 2013-06-17 | 201306180198AM | ND |
| 2013-11-19 | 201311200327AM | ND |
| 2013-11-19 | 201311200369AM | ND |
| 2013-11-19 | 201311200343AM | ND |
| 2013-11-19 | 201311200323AM | ND |
| 2013-11-19 | 201311200341AM | ND |
| 2013-11-19 | 201311200401AM | ND |
| 2013-11-19 | 201311200397AM | ND |
| 2013-11-19 | 201311200527AM | ND |
| 2013-11-19 | 201311200325AM | ND |
| 2019-05-30 | ND | |
| 2019-05-30 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2019-12-10 | ND | |
| 2021-03-30 | 4096452 | ND |
| 2021-03-30 | 4096451 | ND |
| 2021-03-30 | 4096453 | ND |
| 2021-03-30 | 4096450 | ND |
| 2021-05-18 | 4118762 | ND |
| 2021-05-18 | 4118752 | ND |
| 2022-03-24 | 4266311 | ND |
| 2022-03-24 | 4266312 | ND |