Chloromethane
Great Basin Water Burbank
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.
11
Samples
0
Samples exceeding legal limit (MCL)
2
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 | ND | 1 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | ND | 1 | 0 | ND |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | 1.58 ppb | 9 | 5 | ND - 4.11 ppb |
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 |
|---|---|---|
| 2019-10-09 | ND | |
| 2021-11-10 | 4202783 | ND |
| 2023-01-12 | 4513916 | ND |
| 2023-01-12 | 4443138 | 3.50 ppb |
| 2023-01-31 | 4407720 | 1.40 ppb |
| 2023-08-29 | 4507756 | ND |
| 2023-08-29 | 4507757 | 4.11 ppb |
| 2023-12-26 | 4573454 | ND |
| 2023-12-26 | 4573455 | 2.62 ppb |
| 2023-12-26 | 4573496 | 2.63 ppb |
| 2023-12-26 | 4573498 | ND |