Chloromethane
Triple R Mutual 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.
7
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 6 | 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 |
|---|---|---|
| 2021-03-13 | CA5400670_011_011-202103131200 | ND |
| 2022-03-27 | CA5400670_011_011-202203271455 | ND |
| 2022-06-24 | CA5400670_009_009-202206241305 | ND |
| 2022-12-28 | CA5400670_006_006-202212281030 | ND |
| 2022-12-28 | CA5400670_007_007-202212281115 | ND |
| 2022-12-28 | CA5400670_008_008-202212281100 | ND |
| 2022-12-28 | CA5400670_001_001-202212281000 | ND |