Chloromethane
Lincoln Waterworks
NOTE: Lincoln Waterworks purchases water from Benton - Washington Regional Public Water Authority which is required to test for chloromethane. Sample information shown below was taken by Benton - Washington Regional Public Water Authority.
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 4 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 3 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 1 | 0 | ND |
| 2021 | ND | 1 | 0 | ND |
| 2022 | ND | 1 | 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
NOTE: Lincoln Waterworks purchases water from Benton - Washington Regional Public Water Authority which is required to test for chloromethane. Sample information shown below was taken by Benton - Washington Regional Public Water Authority.
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-15 | 18137013001 | ND |
| 2018-07-31 | 18213008801 | ND |
| 2018-10-24 | 18298011801 | ND |
| 2019-01-09 | 19010016401 | ND |
| 2019-04-02 | 19093000801 | ND |
| 2020-04-14 | 20107008808 | ND |
| 2021-05-04 | 21126011201 | ND |
| 2022-04-05 | O196530-VOC-1 | ND |