Everyone should consider adding a rain water collection system.
I extended my workshop and added a large water tank to collect rain water. A small pump provides pressure for running water in the utility sink inside my workshop, plus a second utility sink outdoors behind the workshop by my wife's potting bench, plus a spigot inside the shop to run a hose/water to my wet tile saw and water-fed drill press. I'm showing the "public" side of the workshop also so you don't think I'm a total slob, plus the messy, but private, back side of the shop where the water tank and potting bench are located.