(a) Charges for wastewater services shall be determined in accordance with the terms of this chapter and shall not be provided without charge to any users.
(1) User charge rates will be proportionate to the sewerage system operation, maintenance and replacement costs incurred, plus a charge to recover the proportionate share of capital costs for sewage treatment plant and collection system improvements.
(2) The sewer service charge shall consist of the sum of the general administrative charges, the operation, maintenance and replacement charges, the debt service charges and surcharges (if applicable).
(b) User charges shall first be determined on the basis of the equivalent dwelling unit (EDU) method and then converted to the volume method for metered areas.
(1) The EDU method is used for areas where water usage is not metered. In this method, the monthly rate per EDU is multiplied by the number of EDU's applicable for a particular establishment to arrive at the monthly sewer service charge.
(2) New Carlisle has determined that 175 gallons per day is representative of the average dwelling unit's water usage
(c) The volume method is used when metering is available for a particular area. In this method, the monthly water usage, based on meter readings for the past month and current month, is used to arrive at the monthly sewer service charge.
(1) A specific rate is multiplied by each increment of 1,000 gallons of water usage per month.
(2) Minimum charges have been established to ensure recovery of administrative and debt service expenses.
(d) The base user charges for the New Carlisle sewerage system are calculated as follows:
(1) Operation, maintenance and replacement charge (OM&R).
A. A proportionate rate for the operation, maintenance and replacement of the sewerage system shall be charged to all users based on the following formula: OM&R = A/EDU
Where:
• OM&R = Total operation, maintenance and replacement charge for each EDU for a one-year period.
• A = Total annual operation, maintenance and replacement costs for the sewerage system.
• EDU = Total number of equivalent dwelling units (EDU) of the system.
B. The monthly operation, maintenance and replacement charge for each EDU is then determined for areas without metered service based on the following formula: OM&R
month = OM&R/12
Where
• OM&R
month = Total operation, maintenance and replacement charge for each EDU for a one-month period.
C. For areas with metered service, the OM&Rmonth determined above is then converted to a metered OM&R rate for water usage, as shown by the following formula:
OM&R
month x 1,000
OM&Rrate = [175 gpd x 30.4 days/month average]
Where
• OM&R
rate = Operation, maintenance and replacement charge rate for each 1,000 gallons of water usage.
(2) Debt service charge.
A. The proportionate rate for replacement of all capital costs associated with the construction of sewerage system improvements shall be charged to all users based upon the following formula: DSC = B/EDU
Where
• DSC = Total amortized annual debt service charge to pay for construction of sewerage system improvements for each EDU for a one-year period.
• B = Total amortized annual debt service payments for construction of the sewerage system improvements.
• EDU = Total number of equivalent dwelling units (EDU) of the system.
B. The monthly debt service charge for each EDU is then determined for areas without metered service, based on the following formula: DSC
month = DSC/12
Where
• DSC
month = Total amortized debt service charge to pay for construction of sewerage system improvements for each EDU for a one-month period.
C. For areas with metered service, the DSCmonth determined above is then converted to a metered DSC rate for water usage, as shown by the following formula: DSCrate = DSCmonth x 1,000
[175 gpd x 30.4 days/month average]
Where
• DSC
rate = Amortized debt service charge rate for each 1,000 gallons of water usage.
(Ord. 95-16. Passed 9-18-95; Ord. 2022-18. Passed 5-16- 22.)