What is considered normal consumption and what is considered excessive consumption?

What is considered normal consumption and what is considered excessive consumption?

The Washington State Department of Health has determined that an average family of four consumes 255 gallons (34 cubic feet) of indoor water use per day (x 30 days = 7,650 gallons or 1,000 cubic feet for the month). Summer use can double that amount (15,300 gallons or 2,000 cubic feet), depending upon watering patterns. 22,440 gallons or 3,000 cubic feet is considered excessive by average standards, and therefore, subject to higher rates.