Rain to Table, Part 3: The sky’s the limit with rain tanks.

My husband and I bought a home in May and we were thrilled the house was already outfitted with gutters and a 1,300-gallon rainwater harvesting tank. When we moved in, the tank sat full of water, while the desert-adapted vegetation in the backyard was receiving daily irrigation from the municipal supply. There were no apparent vegetable garden or fruit trees in the yard. This left me wondering: How did the previous owners use their rain tank, if at all?