Chloromethane
Lomira 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.
17
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 | ND | 5 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2018-03-12 | 1044517 | ND |
| 2018-03-12 | 1044519 | ND |
| 2018-04-17 | 1050450 | ND |
| 2018-08-06 | 1071729 | ND |
| 2018-12-10 | 1097116 | ND |
| 2019-03-12 | 1109088 | ND |
| 2019-03-12 | 1109086 | ND |
| 2019-06-03 | 1124568 | ND |
| 2019-07-23 | 1136304 | ND |
| 2019-07-23 | 1136305 | ND |
| 2019-10-16 | 1155641 | ND |
| 2020-07-14 | 1199585 | ND |
| 2020-07-14 | 1199589 | ND |
| 2021-07-26 | 1267994 | ND |
| 2021-07-26 | 1267993 | ND |
| 2022-09-06 | 1334570 | ND |
| 2022-09-06 | 1334573 | ND |