Chloromethane
Westbound Water Supply Corporation Cisco Source
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.
12
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 | 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 |
|---|---|---|
| 2018-11-28 | Q1848312002 | ND |
| 2018-11-28 | Q1848312004 | ND |
| 2019-12-17 | Q1980357004 | ND |
| 2019-12-17 | Q1980357006 | ND |
| 2020-11-09 | Q2043631003 | ND |
| 2020-11-09 | Q2043631009 | ND |
| 2021-02-09 | Q2103863001 | ND |
| 2021-02-09 | Q2103863003 | ND |
| 2022-02-16 | Q2205765002 | ND |
| 2022-02-16 | Q2205765004 | ND |
| 2023-02-07 | Q2304671006 | ND |
| 2023-07-12 | Q2327347004 | ND |