WS - C - Water Sewer Rate Structure Increase Information - Water Plant Upgrade Project

WATER RATE ANALYSIS City of Tiffin, Iowa * This is based on the Water portion of the utility bill and does not include sewer Based on 15M 20 year 3.09% SRF water revenue loan Option 2 Proposed Rate Increases Estimated Initial Current FY2025 Increase for FY2026 Percentage Increase Min. Bill Gallons 0 0 Usage Rate per 1,000 Gallons $5.50 $10.55 92% Base Rate $7.00 $13.45 92% User Impacts 1,000 12.50 24.00 92% 2,000 18.00 34.55 92% 4,000 29.00 55.65 92% 10,000 62.00 118.95 92% 25,000 144.50 277.20 92% Key Assumptions * Assumes utility rates/growth will increase to match inflation in operation and maintenance costs * Assumes Operating rate increases maintain a 2% increase on base rate and flow rate Estimate and subject to change based on project cost and actual operating revenues and expenditures Prepared by Northland Securities, Inc. on 4/15/2025