3-Stage Portable Aquarium-Countertop Reverse Osmosis Water Filter System-100GPD: Amazon.com: Industrial & Scientific
www.amazon.com
I used to go fill two 5 gal containers every few days. Then I ordered that aquarium ro filter and it saves me so much hassle. Just don't fall asleep while filling a jug, it gets messy when it overflows hahahaha.
I'm growing in living soil and it seems to work fine for that as well as drinking water.