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Sewer Volume Charge/Average
There is no economical way to measure your sewer volume.  Meters capable of measuring sewer volume cost approximately $5,000 each; and require a high level of maintenance.  These additional costs typically will be passed on to the customer.  The most common way to estimate sewer volume is by using a winter quarter average.

How do you calculate the winter quarter average?
Your sewer volume charge is based on your water consumption during the winter months.  The Winter Quarter Average is calculated by totaling your water consumption used during the December, January and February billing cycle.  This is divided by the total amount of service days in this billing period to get a daily average usage.  The daily average usage is then multiplied by 30.42 to get your monthly average.  Your new WQA starts in March of each year.

Total Consumption ÷ Total Days X 30.42 = WQA

What if I just moved and don’t have a December or January billing cycle?

You will be classified as a new customer.  All new residential customer's sewer volume charge is based on actual consumption or the class average, whichever is less until the next winter quarter average period.  The residential class average is currently 5 thousand gallons.

Why do you use December, January, and February billing cycles?
Statistics show that the lowest water consumption is during this time period because grass, flowers, and trees do not require daily watering and swimming pools do not need to be filled.

Tips to get a low winter quarter average:
  • Your December bill will include part of November’s usage so conserve your water starting in November through February.
  • If you have leaking toilets or faucets, repair immediately.
  • Wash vehicles at a car wash.
  • Replace old toilets with a new low flow one.
  • See our Water Conservation site for more tips and rebates.
  • Replace your washing machine with an energy saving one.