I have to admit, even though we live on a farm, I wouldn't want a cat that pees on things. outdoor furniture and equipment in the barn, work clothes that hang out there...nobody wants to smell cat pee.
I think it's very sad, but I honestly don't know what you can do about it, unless you can find an outdoor cat sanctuary, and then you will have to pay a fee for them to take him.
and sometimes, and I know I'm probably going to get yelled at over this, the best thing is to euathanize the cat. there are so many good cats living in shelters, and I think it reduces precious space to house ones that have issues that would prevent them from being adoptable. I do think it's good that you are honest about his peeing on things, but I also think it will make him un-adoptable. I'm sorry to say that-I'm not trying to be mean, just honest.
When you saved your kitty from the dumpster, you were doing what anybody with a heart would have done, but now you are in a pickle, and I'm sad for you about that. Maybe next time you save a critter, you could take it to the shelter or a rescue and let them deal with it. That way you save your heart and nerves, and furniture and clothes.