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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 0.0710 ppb | 1 | 1 | 0.0710 ppb |
2015 | 0.185 ppb | 4 | 1 | ND - 0.740 ppb |
2016 | ND | 1 | 0 | ND |
2017 | 1.10 ppb | 1 | 1 | 1.10 ppb |
2018 | 2.55 ppb | 3 | 3 | 0.340 ppb - 3.90 ppb |
2019 | 1.81 ppb | 2 | 2 | 0.610 ppb - 3.00 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
---|---|---|
2014-07-17 | 48063999 POCS 20 | 0.0710 ppb |
2015-04-13 | 480-78300-1 | ND |
2015-04-13 | 480-78299-1 | 0.740 ppb |
2015-07-15 | 480-83980-1 | ND |
2015-10-06 | 480-88507 4TH Q | ND |
2016-01-28 | 480-944701 POCS | ND |
2017-08-08 | 480-122485-1-POC | 1.10 ppb |
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 | 3.00 ppb |