Chloromethane
N Walpole Village District/low
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.
13
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 |
|---|---|---|---|---|
| 2015 | ND | 1 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 9 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2015-01-19 | 111031P | ND |
| 2018-01-09 | 118010501.01 | ND |
| 2018-03-06 | 118030514.01 | ND |
| 2018-04-11 | 118041218.01 | ND |
| 2018-05-08 | 118051007.01 | ND |
| 2018-07-10 | 118070915.01 | ND |
| 2018-07-10 | 118070915.02 | ND |
| 2018-09-05 | 118090432.01 | ND |
| 2018-11-05 | 118110574.01 | ND |
| 2018-11-06 | 118110570.01 | ND |
| 2019-03-04 | 119030357.01 | ND |
| 2019-03-05 | 119030358.01 | ND |
| 2019-04-02 | 119040308.01 | ND |