Chloromethane
City of Grandview
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.
15
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 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 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 2.79 ppb | 9 | 2 | ND - 13.2 ppb |
| 2022 | 11.4 ppb | 4 | 4 | 1.47 ppb - 30.2 ppb |
| 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 |
|---|---|---|
| 2019-03-19 | ND | |
| 2019-04-23 | ND | |
| 2021-04-13 | 4102292 | ND |
| 2021-04-13 | 4102289 | ND |
| 2021-04-13 | 4102291 | ND |
| 2021-04-13 | 4102293 | ND |
| 2021-04-13 | 4102290 | ND |
| 2021-04-13 | 4102010 | 12.0 ppb |
| 2021-04-13 | 4102032 | ND |
| 2021-09-21 | 4183352 | ND |
| 2021-12-13 | 4217915 | 13.2 ppb |
| 2022-03-21 | 4263833 | 9.75 ppb |
| 2022-06-07 | 4298851 | 30.2 ppb |
| 2022-09-20 | 4347786 | 1.47 ppb |
| 2022-10-24 | 4364692 | 4.07 ppb |