Chloromethane
Rio Brazos 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.
14
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 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 4 | 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 |
|---|---|---|
| 2018-09-24 | Q1838018007 | ND |
| 2018-09-24 | Q1838018008 | ND |
| 2019-09-23 | Q1967408003 | ND |
| 2019-09-23 | Q1967408008 | ND |
| 2020-08-03 | Q2030183001 | ND |
| 2020-08-03 | Q2030183003 | ND |
| 2021-03-31 | Q2108168006 | ND |
| 2021-03-31 | Q2108168008 | ND |
| 2022-11-30 | Q2235879002 | ND |
| 2022-11-30 | Q2235879004 | ND |
| 2023-06-08 | Q2321728001 | ND |
| 2023-06-08 | Q2321728011 | ND |
| 2023-08-17 | Q2334702001 | ND |
| 2023-12-15 | Q2354044001 | ND |