I'd probably go the magnesol method regardless of water supply. It just doesn't seem right to me to put water into the mix after you already went through the process to get it out of your wvo in the beginning. To me it seems faster and easier to run it through a 5 micron then 1 micron bag filters and then maybe a final filter, rather than have to dry it. I don't really know, but that's just what i've come up with from all that i've read.