Years of runoff, pesticides, air and ground pollution are overdue for analysis, according the EPA and The Sacramento Bee.
Jared Blumenthal told the Bee: "This is an incredibly critical ecosystem that is on the brink of collapse. This, for the first time, tries to look holistically and say, 'What should be done that isn't being done, and are there things EPA should do that we're not.' "
While pesticides from farming leap to mind, household cleaners and "what's under your sink" are a proven major contributor to the Delta's downslide.
The EPA will collect public information for the next two months.