Chloromethane
North Wales Water Authority
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.
22
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 | 22 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-02-04 | 14012246-02 | ND |
| 2014-02-04 | 14012246-01 | ND |
| 2014-02-04 | 14012246-06 | ND |
| 2014-02-04 | 14012246-07 | ND |
| 2014-02-04 | 14012246-03 | ND |
| 2014-02-04 | 14012246-09 | ND |
| 2014-02-04 | 14012246-04 | ND |
| 2014-02-04 | 14012246-08 | ND |
| 2014-02-04 | 14012246-10 | ND |
| 2014-02-04 | 14012246-05 | ND |
| 2014-05-06 | 14050298-01 | ND |
| 2014-08-11 | 14080705-01 | ND |
| 2014-08-11 | 14080706-01 | ND |
| 2014-08-11 | 14080704-01 | ND |
| 2014-08-11 | 14080709-01 | ND |
| 2014-08-11 | 14080707-01 | ND |
| 2014-08-11 | 14080708-01 | ND |
| 2014-08-11 | 14080703-01 | ND |
| 2014-08-11 | 14080702-01 | ND |
| 2014-08-11 | 14080700-01 | ND |
| 2014-08-11 | 14080701-01 | ND |
| 2014-11-10 | 14103223-02 | ND |