The herbs/anything in pots were watered every other day. Anything in the ground got a deep soaking about once week. I’d leave the hose running on low for about an hour and really soak the ground. This encouraged the roots to grow deeper and I didn’t have to water as often. My water bill went up but I don’t think it increased by too much. I realize that’s a vague answer but I can’t remember the exact cost of the water bill.