Chloromethane
Wildwood Water Association
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.
8
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 |
|---|---|---|---|---|
| 2018 | 0.610 ppb | 3 | 3 | 0.550 ppb - 0.700 ppb |
| 2019 | 0.290 ppb | 2 | 1 | ND - 0.580 ppb |
| 2020 | 1.69 ppb | 1 | 1 | 1.69 ppb |
| 2021 | ND | 1 | 0 | ND |
| 2022 | 0.718 ppb | 1 | 1 | 0.718 ppb |
| 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 |
|---|---|---|
| 2018-02-28 | 18060002601 | 0.550 ppb |
| 2018-04-30 | 18123005601 | 0.580 ppb |
| 2018-09-17 | 18263004601 | 0.700 ppb |
| 2019-05-01 | 19121003408 | 0.580 ppb |
| 2019-08-12 | 19227000409 | ND |
| 2020-07-27 | 20212001801 | 1.69 ppb |
| 2021-08-31 | 21245002001 | ND |
| 2022-08-16 | O200997-VOC-1 | 0.718 ppb |