ETV or Environmental Technology Verification is the process for developing, conducting, and reporting scientifically objective evaluations of industrial and environmental technologies, which will be determinative of their functional performance under stated conditions as to provide a reasonable basis for future decisions by technology enablers.

ETV conducts actual tests on technologies as supervised by invited pool of experts. It determines whether it operates effectively based on the claims of technology enablers although it does not certify, ensure, or warrant that a technology will meet a standard or expected criteria in the future. Still, ETV provides a level-playing field among technology competitors through standardized tests and reports.