When Great Lakes Water Authority (GLWA) calculates the water rates for Dearborn and every community they supply water to, they look at the peak hourly usage for that city.
If Dearborn as a community can lower water use during peak hours, it can affect the future water rates from GLWA. Off-peak hours are from midnight through 5 a.m. These hours do not count when GLWA calculates Dearborn’s peak usage rate for water, which affects water cost significantly.
By setting an automatic lawn sprinkler system for midnight to 5 a.m., one will reduce future water rate increases.
