I don't water or add fertilizer or anything to my compost. The stuff that I collect that I know is from natural lawns along with ground up leaves goes in my compost pile for our organic veggie garden. I really don't bag much grass though and most of what I do bag gets disposed of onsite. I do have a front-end loader to turn it with though, which helps a lot. I run 3 piles. One pile is always accumulating, one pile is composting and one is finished. I stop accumulating at the beginning of fall cleanup season, move it to the finishing area and by spring it's ready to use. Of course the accumulating pile is composting the whole time it's accumulating too, but at some point you have to stop adding to it.