Chloromethane
Alpine Manor Home For Adults
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)
5
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 | 4.10 ppb | 1 | 1 | 4.10 ppb |
| 2020 | 4.70 ppb | 1 | 1 | 4.70 ppb |
| 2021 | 3.50 ppb | 2 | 2 | 1.40 ppb - 5.60 ppb |
| 2022 | 4.50 ppb | 1 | 1 | 4.50 ppb |
| 2023 | 3.60 ppb | 2 | 2 | 2.40 ppb - 4.80 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 |
|---|---|---|
| 2019-09-09 | EHS1900045299-POC | 4.10 ppb |
| 2020-12-14 | EHS2000286572-SR-1 | 4.70 ppb |
| 2021-08-17 | EHS2100082063POC | 5.60 ppb |
| 2021-09-13 | EHS2100088686-01 | 1.40 ppb |
| 2022-07-05 | EHS2200031120-SR-1 | 4.50 ppb |
| 2023-08-14 | EHS2300047184-SR2 | 2.40 ppb |
| 2023-09-13 | EHS2300053516-01 | 4.80 ppb |