Chloromethane
Spanaway Water Company
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.
29
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 | 18 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 3 | 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 |
|---|---|---|
| 2014-04-15 | 201404160630AM | ND |
| 2014-04-15 | 201404160620AM | ND |
| 2014-04-15 | 201404160827AM | ND |
| 2014-04-21 | 201404220210AM | ND |
| 2014-04-21 | 201404220370AM | ND |
| 2014-04-21 | 201404230324AM | ND |
| 2014-04-21 | 201404230367AM | ND |
| 2014-04-21 | 201404220212AM | ND |
| 2014-04-29 | 201404300789AM | ND |
| 2014-10-06 | 201410070303AM | ND |
| 2014-10-06 | 201410070319AM | ND |
| 2014-10-06 | 201410070399AM | ND |
| 2014-10-06 | 201410070325AM | ND |
| 2014-10-06 | 201410070305AM | ND |
| 2014-10-06 | 201410070328AM | ND |
| 2014-10-07 | 201410080447AM | ND |
| 2014-10-07 | 201410080459AM | ND |
| 2014-10-07 | 201410080423AM | ND |
| 2018-09-25 | ND | |
| 2018-09-25 | ND | |
| 2018-09-25 | ND | |
| 2019-06-05 | ND | |
| 2019-06-05 | ND | |
| 2019-06-05 | ND | |
| 2019-06-06 | ND | |
| 2021-08-04 | 4157585 | ND |
| 2021-08-04 | 4157571 | ND |
| 2021-08-04 | 4157592 | ND |
| 2022-06-07 | 4298830 | ND |