Chloromethane
Redmond Water Department
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.
14
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 |
|---|---|---|---|---|
| 2014 | ND | 14 | 0 | ND |
| 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 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-03-18 | 201403190846AM | ND |
| 2014-03-18 | 201403190626AM | ND |
| 2014-03-18 | 201403190605AM | ND |
| 2014-03-18 | 201403190601AM | ND |
| 2014-03-19 | 201403200285AM | ND |
| 2014-03-19 | 201403200411AM | ND |
| 2014-03-19 | 201403200279AM | ND |
| 2014-09-10 | 201409110583AM | ND |
| 2014-09-10 | 201409110753AM | ND |
| 2014-09-10 | 201409110840AM | ND |
| 2014-09-15 | 201409160629AM | ND |
| 2014-09-15 | 201409160591AM | ND |
| 2014-09-15 | 201409160635AM | ND |
| 2014-10-20 | 201410210247AM | ND |