Chloromethane
Lancaster Water Company
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.
12
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 | 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 |
|---|---|---|
| 2018-07-18 | CA1900808_001_001-201807181135 | ND |
| 2018-07-18 | CA1900808_002_002-201807181150 | ND |
| 2019-07-17 | CA1900808_001_001-201907171120 | ND |
| 2019-07-17 | CA1900808_002_002-201907171123 | ND |
| 2020-07-15 | CA1900808_001_001-202007151105 | ND |
| 2020-07-15 | CA1900808_002_002-202007151110 | ND |
| 2021-07-21 | CA1900808_001_001-202107211210 | ND |
| 2021-07-21 | CA1900808_002_002-202107211220 | ND |
| 2022-07-20 | CA1900808_002_002-202207201145 | ND |
| 2022-07-20 | CA1900808_001_001-202207201150 | ND |
| 2023-07-19 | CA1900808_001_001-202307191235 | ND |
| 2023-07-19 | CA1900808_002_002-202307191238 | ND |