Chloromethane
Cameron Parish Water and Water Works District 1
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.
10
Samples
0
Samples exceeding legal limit (MCL)
9
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 4.98 ppb | 10 | 10 | 1.55 ppb - 11.3 ppb |
| 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 |
|---|---|---|
| 2014-02-11 | 103722P | 1.55 ppb |
| 2014-02-11 | 103720P | 3.79 ppb |
| 2014-02-11 | 103723P | 4.64 ppb |
| 2014-02-11 | 103724P | 8.80 ppb |
| 2014-02-11 | 103721P | 11.3 ppb |
| 2014-08-12 | 107795P | 3.30 ppb |
| 2014-08-12 | 107793P | 3.66 ppb |
| 2014-08-12 | 107791P | 4.65 ppb |
| 2014-09-03 | 109288R | 3.92 ppb |
| 2014-09-03 | 109289R | 4.22 ppb |