After reading the Herald’s article on the record water usage in Lakewood Ranch, I would suggest doing what Florida Power and Light does on a volunteer basis with customers, by interrupting the power to certain high energy units during max usage days.
The customer receives a discount when relays are hooked up to their individual appliances whatever they are. As far as the sprinkler systems are concerned, a relay box (electronically controlled) would be operated by the water company during rainy days an/ or high penetration of ground water. The electric ground would be opened preventing use of sprinklers. The system would be relaxed during normal dry days. It’s a very simple system.
William F. Xavier