The city wanted each residential zone to have one weekend day and one weekday to water, with Fridays designated for commercial property irrigation. To achieve this goal while balancing other goals—reducing PFAS impacts, minimizing system demand, managing system peaking factor and still allowing time for adequate irrigation—there would always be a zone with a four-day gap.
The city contracted an engineering firm to model the city's water system. Multiple iterations/variances in the zones were evaluated. The outcome of the effort determined the current zone system was the best for the community in achieving the multiple goals outlined.
Through this process, staff continues to monitor feedback from the community and will continue to evaluate the need and ability to make changes and improvements to the current policy following the 2023 irrigation season.