Delaware County residents who saturate their lawns or refill their pools could see a dramatic jump in their water bills this summer.

Del-Co Water Co. announced a new rate structure to begin next month that will target those who use an excessive amount of water during the peak summer months. “Excessive” is defined as more than 25,000 gallons per month. The average homeowner uses about 5,000 gallons per month and will see an increase of less than 2 percent on a typical $35 bill.