Chloromethane
Port Orchard 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.
15
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 | 11 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2015-01-26 | B5A2436-04 | ND |
| 2015-01-26 | B5A2436-01 | ND |
| 2015-01-26 | B5A2436-07 | ND |
| 2015-01-26 | B5A2436-10 | ND |
| 2015-01-28 | B5A2687-01 | ND |
| 2015-04-06 | B5D0545-01 | ND |
| 2015-07-06 | B5G0536-01 | ND |
| 2015-07-06 | B5G0540-01 | ND |
| 2015-07-06 | B5G0536-04 | ND |
| 2015-07-06 | B5G0536-07 | ND |
| 2015-10-13 | B5J1338-01 | ND |
| 2019-05-22 | ND | |
| 2022-03-17 | 4260748 | ND |
| 2023-05-01 | 4452810 | ND |
| 2023-05-01 | 4452811 | ND |