Chloromethane
Silverdale Water District 16
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.
34
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 | 11 | 0 | ND |
| 2015 | ND | 11 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 1 | 0 | ND |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 10 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2014-12-08 | 201412090508AM | ND |
| 2014-12-08 | 201412090583AM | ND |
| 2014-12-08 | 201412090603AM | ND |
| 2014-12-08 | 201412090590AM | ND |
| 2014-12-08 | 201412090767AM | ND |
| 2014-12-08 | 201412090605AM | ND |
| 2014-12-09 | 201412100830AM | ND |
| 2014-12-09 | 201412100776AM | ND |
| 2014-12-09 | 201412100442AM | ND |
| 2014-12-10 | 201412110237AM | ND |
| 2014-12-10 | 201412110884AM | ND |
| 2015-06-16 | 201506170352AM | ND |
| 2015-06-16 | 201506170375AM | ND |
| 2015-06-16 | 201506170589AM | ND |
| 2015-06-16 | 201506170403AM | ND |
| 2015-06-16 | 201506170384AM | ND |
| 2015-06-17 | 201506180501AM | ND |
| 2015-06-17 | 201506190057AM | ND |
| 2015-06-17 | 201506180490AM | ND |
| 2015-06-17 | 201506180486AM | ND |
| 2015-06-17 | 201506180469AM | ND |
| 2015-06-17 | 201506180429AM | ND |
| 2018-09-04 | ND | |
| 2021-06-22 | 4142809 | ND |
| 2021-06-22 | 4149408 | ND |
| 2021-06-23 | 4142807 | ND |
| 2021-06-23 | 4142810 | ND |
| 2021-06-23 | 4142806 | ND |
| 2021-06-23 | 4142808 | ND |
| 2021-09-15 | 4178921 | ND |
| 2021-09-15 | 4178922 | ND |
| 2021-09-20 | 4178920 | ND |
| 2021-12-06 | 4213471 | ND |
| 2022-07-25 | 4419133 | ND |