One of the most critical factors for water system planners is to provide adequate supply for the "peak demand period". This is the time when the highest demand for water is recorded. The peak
demand occurs between 5:00 pm and 11:00 pm on hot summer evenings.
24 Hour Demand Profile
As illustrated in the graph above additional load is placed on the water system as thousands of people water their lawns, wash their cars, operate their dishwashers and washing machines. All residents can contribute to wise water use by rescheduling these activities. For example, lawn watering should be avoided during the hours of 5 pm to 11 pm
The high demand periods take place several times a year during the hot summer months. Generally, the peaks last only for a few days. EPCOR is studying ways to modify this high demand so that the water supply is adequate to meet the future needs of customers.