Chloromethane
South Murvaul Water Supply Corporation
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.
8
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 | 0.500 ppb | 1 | 1 | 0.500 ppb |
| 2019 | 0.650 ppb | 1 | 1 | 0.650 ppb |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 0 | ND |
| 2023 | ND | 3 | 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 |
|---|---|---|
| 2018-11-06 | Q1844401002 | 0.500 ppb |
| 2019-09-30 | Q1969938005 | 0.650 ppb |
| 2020-12-02 | Q2048004001 | ND |
| 2021-10-11 | Q2128059003 | ND |
| 2022-09-13 | Q2227122003 | ND |
| 2023-06-20 | Q2323548001 | ND |
| 2023-08-24 | Q2336202001 | ND |
| 2023-11-10 | Q2348390001 | ND |