Chloromethane
Brattleboro 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.
18
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 |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 3 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-09-17 | 14090780-02 | ND |
| 2014-09-17 | 14090780-01 | ND |
| 2014-12-16 | 14120477 | ND |
| 2015-03-17 | 15030484-01 | ND |
| 2015-03-17 | 15030483-01 | ND |
| 2015-06-24 | 5062983-01 | ND |
| 2018-03-09 | 1803-05498-002 | ND |
| 2018-03-09 | 1803-05498-001 | ND |
| 2019-01-18 | 1901-01619-001 | ND |
| 2019-01-22 | 1901-01618-002 | ND |
| 2020-02-04 | 2002-02750-001 | ND |
| 2020-02-11 | 2002-03311-001 | ND |
| 2021-02-05 | 2102-03591-002 | ND |
| 2021-02-05 | 2102-03591-001 | ND |
| 2022-02-08 | 2202-03236-001 | ND |
| 2022-02-08 | 2202-03236-002 | ND |
| 2023-01-17 | 2301-01575-001 | ND |
| 2023-01-17 | 2301-01575-002 | ND |