Chloromethane
Halifax Water Department
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.
39
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 | N/A | 0 | 0 | N/A |
| 2014 | ND | 4 | 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 | 7 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 6 | 0 | ND |
| 2021 | ND | 6 | 0 | ND |
| 2022 | ND | 7 | 0 | ND |
| 2023 | ND | 7 | 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 |
|---|---|
| 2018-03-23 | ND |
| 2018-06-28 | ND |
| 2018-09-13 | ND |
| 2018-12-18 | ND |
| 2018-12-18 | ND |
| 2018-12-18 | ND |
| 2018-12-18 | ND |
| 2019-03-21 | ND |
| 2019-09-24 | ND |
| 2019-12-06 | ND |
| 2019-12-06 | ND |
| 2019-12-06 | ND |
| 2019-12-06 | ND |
| 2020-03-18 | ND |
| 2020-06-30 | ND |
| 2020-09-30 | ND |
| 2020-12-29 | ND |
| 2020-12-29 | ND |
| 2020-12-29 | ND |
| 2021-03-30 | ND |
| 2021-06-30 | ND |
| 2021-12-29 | ND |
| 2021-12-29 | ND |
| 2021-12-29 | ND |
| 2021-12-29 | ND |
| 2022-03-30 | ND |
| 2022-06-29 | ND |
| 2022-09-13 | ND |
| 2022-12-16 | ND |
| 2022-12-16 | ND |
| 2022-12-16 | ND |
| 2022-12-16 | ND |
| 2023-03-29 | ND |
| 2023-06-29 | ND |
| 2023-09-20 | ND |
| 2023-12-27 | ND |
| 2023-12-27 | ND |
| 2023-12-27 | ND |
| 2023-12-27 | ND |