How can a process receive a national vs. site-specific equivalency recommendation?
As indicated in the flow diagram above, processes affected by local climatic conditions or that use materials that may vary significantly from one part of the country to another are unlikely to be recommended as equivalent on a national level. These processes may only receive a site-specific equivalency recommendation. For a recommendation of national equivalency, the process must consistently produce the required pathogen reductions under the variety of conditions that may be encountered at different locations across the country. A recommendation of national equivalency is usually preferred because it enables the treatment processes to be marketed, sold, or used at different locations in the United States. Typically, to receive an equivalency recommendation, laboratory work is performed to establish the boundary conditions of all key process variables, and then pilot or full-scale testing is performed to demonstrate successful scale-up. It should be obvious that for a site-specific eq
