Chloromethane
Rothschild Waterworks
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 | 5 | 0 | ND |
| 2019 | ND | 5 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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 |
|---|---|---|
| 2018-03-13 | 1044837 | ND |
| 2018-06-19 | 1062274 | ND |
| 2018-06-19 | 1062272 | ND |
| 2018-09-11 | 1079505 | ND |
| 2018-11-13 | 1092763 | ND |
| 2019-04-23 | 1116903 | ND |
| 2019-05-07 | 1119529 | ND |
| 2019-08-27 | 1144005 | ND |
| 2019-08-27 | 1144003 | ND |
| 2019-10-29 | 1157914 | ND |
| 2020-08-10 | 1205736 | ND |
| 2020-08-10 | 1205729 | ND |
| 2021-08-03 | 1269115 | ND |
| 2022-07-19 | 1324684 | ND |