Chloromethane
Collins/gowanda Correctional Facilities
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.
9
Samples
0
Samples exceeding legal limit (MCL)
4
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 | 2.55 ppb | 3 | 3 | 0.340 ppb - 3.90 ppb |
| 2019 | 1.81 ppb | 2 | 2 | 0.610 ppb - 3.00 ppb |
| 2020 | 2.60 ppb | 1 | 1 | 2.60 ppb |
| 2021 | 2.80 ppb | 1 | 1 | 2.80 ppb |
| 2022 | 1.50 ppb | 1 | 1 | 1.50 ppb |
| 2023 | ND | 1 | 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 |
|---|---|---|
| 2018-03-05 | 480-132291-1 | 3.90 ppb |
| 2018-05-08 | 480-135652-1 | 3.40 ppb |
| 2018-08-20 | 480-140641-1 | 0.340 ppb |
| 2019-02-26 | 480-149528-1 | 0.610 ppb |
| 2019-08-13 | EHS1900040899-SR-2PO | 3.00 ppb |
| 2020-08-12 | 480-173768-1POC | 2.60 ppb |
| 2021-09-21 | 480-189918-1 | 2.80 ppb |
| 2022-03-16 | EHS2200008609-1POC | 1.50 ppb |
| 2023-08-15 | R2307490-001 | ND |