Kodak web site said:How do I dispose of processing solutions?
If you have a photofinishing business in the U.S., contact KODAK Environmental Service (KES) for a consultation Telephone (585) 477-3194, Monday through Friday, 8 a.m. through 5 p.m. Eastern time; FAX (585) 722-3173; or e-mail KES@Kodak.com.
If you are processing film or paper in your home, see KODAK Publication No. J-300, Environmental Guidelines for Amateur Photographers.