Chloromethane
Northeast Knox U D
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.
26
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 |
|---|---|---|---|---|
| 2013 | ND | 1 | 0 | ND |
| 2014 | ND | 3 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 4 | 0 | ND |
| 2019 | ND | 4 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 3 | 0 | ND |
| 2022 | ND | 5 | 0 | ND |
| 2023 | ND | 5 | 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 | Result |
|---|---|
| 2013-09-24 | ND |
| 2014-01-15 | ND |
| 2014-04-08 | ND |
| 2014-06-23 | ND |
| 2018-01-17 | ND |
| 2018-04-12 | ND |
| 2018-07-11 | ND |
| 2018-10-16 | ND |
| 2019-01-15 | ND |
| 2019-04-09 | ND |
| 2019-07-16 | ND |
| 2019-10-17 | ND |
| 2020-01-15 | ND |
| 2021-01-21 | ND |
| 2021-05-20 | ND |
| 2021-08-19 | ND |
| 2022-01-20 | ND |
| 2022-01-20 | ND |
| 2022-04-21 | ND |
| 2022-07-19 | ND |
| 2022-10-17 | ND |
| 2023-01-17 | ND |
| 2023-01-17 | ND |
| 2023-01-17 | ND |
| 2023-04-19 | ND |
| 2023-10-17 | ND |