The Winter Quarter Average (WQA) is calculated by using your water/wastewater utility consumption used during the December, January, and February billing cycle. The WQA is used because it shows indoor domestic water consumption, which irrigation does not interfere with. The WQA is divided by the total amount of service days in the billing cycle to get a daily average usage. The daily average is then multiplied by 30.42, or 30.50 for leap years, to get your monthly average. Once this is calculated the new wastewater rate based off of your WQA is started in March every year. For more information visit our Water, Wastewater, and Recycled Water Rates page.
Example of the equation:(C ÷D)×Y =WQA
- C = Total Consumptions for the WQA billing cycle.
- D = Total number of days in the WQA billing cycle.
- Y=daily average multiplication number.
- Use 30.42 for non-leap years.
- Use 30.50 for leap years.
- WQA = this is the gallons per month charged as your wastewater rate for the next year.