Chloromethane
Smackover Waterworks
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.
7
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 | N/A | 0 | 0 | N/A |
| 2019 | 0.950 ppb | 1 | 1 | 0.950 ppb |
| 2020 | 1.12 ppb | 2 | 2 | 0.630 ppb - 1.61 ppb |
| 2021 | 0.510 ppb | 2 | 1 | ND - 1.02 ppb |
| 2022 | ND | 1 | 0 | ND |
| 2023 | 1.24 ppb | 1 | 1 | 1.24 ppb |
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 |
|---|---|---|
| 2019-02-11 | 19045009801 | 0.950 ppb |
| 2020-01-27 | 20030004401 | 0.630 ppb |
| 2020-07-27 | 20212001701 | 1.61 ppb |
| 2021-01-26 | 21028014501 | 1.02 ppb |
| 2021-01-26 | 21028015201 | ND |
| 2022-01-24 | 22027007301 | ND |
| 2023-01-31 | O205870-VOC-1 | 1.24 ppb |