Where do I find the list of CWA priority pollutants?
Believe it or not, they are found in Appendix A to 40 CFR 423 Steam Electric Power Generating Point Source Category. In one of those odd regulatory timing issues, when EPA expanded the toxic pollutants list to create the priority pollutants under direction of Congress, EPA needed a place to codify them. The Steam Electric Power Generating Point Source Category was an active rule making at the time so that is where they ended up.
