It's easy enough to get drinking water out of an
RO/DI system. What you want to drink in the water after the
RO but before the
DI. You can just T off the linet direct water to your drinking water storage, or toyour
DI canister when you're making water for the tank. There's no issue drinking
RO/DI water, it just tasets pretty nasty for some reason.
IMO, you don't want to hook it directly to your tank anyway. If your float valve gets stuck, it'll just keep dumping water dropping your
salinity nd overflowing your tank.