Chloromethane
Lamar, Town of
NOTE: Lamar, Town of purchases water from Darlington County W&SA which is required to test for chloromethane. Sample information shown below was taken by Darlington County W&SA.
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 |
|---|---|---|---|---|
| 2015 | ND | 1 | 0 | ND |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | ND | 3 | 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
NOTE: Lamar, Town of purchases water from Darlington County W&SA which is required to test for chloromethane. Sample information shown below was taken by Darlington County W&SA.
| Date | Lab ID | Result |
|---|---|---|
| 2015-03-24 | 201503160179AM | ND |
| 2015-03-24 | 201503260800AM | ND |
| 2015-03-24 | 201503260802AM | ND |
| 2015-09-14 | 201509170311AM | ND |
| 2015-09-14 | 201509160580AM | ND |
| 2015-09-14 | 201509170304AM | ND |
| 2018-07-17 | AE15134 | ND |
| 2018-11-01 | AE20719 | ND |
| 2019-01-17 | AE24350 | ND |
| 2019-05-08 | AE30033 | ND |
| 2023-10-12 | AF10138 | ND |
| 2023-10-12 | AF10139 | ND |
| 2023-10-12 | AF10137 | ND |