Chloromethane
Fallbrook Utility District
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.
16
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 | 4 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
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 |
|---|---|---|
| 2015-03-04 | 112590P | ND |
| 2015-03-04 | 112591P | ND |
| 2015-09-08 | 115447P | ND |
| 2015-09-08 | 115448P | ND |
| 2018-04-12 | AE22306 | ND |
| 2018-04-12 | AE22324 | ND |
| 2019-05-22 | AE67711 | ND |
| 2019-05-22 | AE67713 | ND |
| 2020-07-08 | AF18632 | ND |
| 2020-07-08 | AF18652 | ND |
| 2021-05-03 | AF52136 | ND |
| 2021-05-03 | AF52138 | ND |
| 2022-03-23 | AF90216 | ND |
| 2022-03-23 | AF90220 | ND |
| 2023-07-26 | AG50198 | ND |
| 2023-07-26 | AG50204 | ND |