Municipal, Industrial, and Landscape Irrigation

  1. Rate Structure Changes
  2. Annual Rate Adjustment
  3. Putting it all together

1) Rate Structure Changes

Your water bill is determined based on what it costs to serve water to your home or business. Due to state requirements, the changing water use trends driven by the recent drought, and our fiscal responsibility, we need to reassess our rate structure.

  • We worked with an independent consultant to ensure proper allocation of costs among customers and develop the Final Administrative Record for Rate Structure Analysis (PDF). Our rate structure changes align water rates with the cost of your water service, nothing more.
  • These structural changes only affect how rates and charges are allocated among customers; they do not result in additional funds for the District overall.
  • With the rate structure changes, some customers’ bills will go down, while others will go up depending on their service.


The untreated water rates have been standardized to increase ease of understanding and administration.

Demand Charge – The demand charge represents the cost of delivering water to customers under peak demand conditions. The previous demand charge was assessed by gallons per minute based on maximum day, maximum hour, or maximum month factors, differing by each customer class. The demand charge is now the same rate for all metered customers. The demand charge is assessed by thousand gallons based on maximum month of usage in each of the three past years, averaged. The 2019 rates will be based on the averages from FY16, FY17 and FY18 (July 1, 2015 through June 30, 2018). A three-year average is utilized to provide a stable basis that does not drastically change due to annual fluctuations in demand. A historical average also takes into consideration the most recent capacity requirements for each customer and is an industry standard methodology to recover capacity-related costs.

Elimination of the Excess Use Charge – Due to changes in state law, we must remove the excess use charge, which increased the rate for landscape irrigation customers who exceeded their budgeted water allocation.