Quantity charges for metered residential customers shall be based on 100% of water consumption unless the individual customer's average monthly water usage, rounded to the nearest whole number, is less for the bills issued in the months of November, December, January, and February, calculated after the month with the highest metered water usage and the month with the lowest metered water usage have been eliminated. If a customer does not have a water usage history for all of the months in the calculation (November, December, January, and February), then the quantity charge shall be based on 6,000 gallons of consumption.
Average Winter Consumption (AWC) & Calculation
"Average Winter Months Consumption" is calculated before the first billing cycle in May. An account must have actual consumption for the months of November, December, January, and February. Of these four months, the month with the highest consumption and the month with the lowest consumption are rejected. The consumption for the remaining two months is then averaged to arrive at the "Average Winter Months Consumption" which will determine the maximum amount charged for sewerage.
Example of Calculation
Billing Month Service Dates Water Consumption
November: 12,000 gallons
December: 18,000 gallons
January: 11,000 gallons
February: 14,000 gallons
In the example above, December is the month with the highest water consumption and January is the month with the lowest usage - these months are not used in the calculations.