Well, I purchased the foam filter inserts so I could use the CT22 with water, but I didn't know about the bucket insert until later. I started to set it up for water pickup, and then I realized how difficult it would be to drain the water out without the insert. I balked at the price of the insert (almost $100), and I decided to get a big Rigid 1850, and I have been very impressed with how it works for this sort of thing. Not too loud even, certainly better than my old Dirt Devil screamer, which I had to use hearing protection with, even with a Sears muffler stuck on. The DD did the job though until I got the Rigid. I think water pickup is last on the list of what the CT can be used for. It can do it, but it is not designed for it. The Rigid, and others like it, excell at this.