Lebanon WWTP Expansion & Clean Water Improvements

Lebanon WWTP Expansion & Clean Water Improvements

The City of Lebanon and the Lebanon Utilities are upgrading the Lebanon Wastewater Treatment Plant (WWTP) and collection and conveyance infrastructure. These improvements support both current community needs and substantial projected growth, including demands from the rapidly developing LEAP Innovation District.

🎯 Project Purpose & Key Drivers

• Existing WWTP Capacity: 5 MGD average / 15 MGD peak
• Projected Required Capacity: 20 MGD average / 48.3 MGD peak
• Water-Supply Agreement: Up to 25 MGD imported—requires wastewater return for watershed balance
• Clean Water Improvements: Construction of a new pump station and force main to Eagle Creek

🔧 Existing System Conditions

• Treatment Process: Extended‑aeration activated sludge system, UV disinfection, aerobic digestion
• Operational Loading: ~54% of rated capacity
• Current Discharge Location: Prairie Creek
• Collection System: 502,000 ft of sewer and 19 lift stations

🏗️ Recommended Solution: Phased WWTP Expansion

Phase 1

Capacity: 10 MGD average / 24.5 MGD peak Includes upgrades to:

• Headworks
• Grit removal
• Biological reactors
• Clarifiers
• Filtration
• UV disinfection
• Solids handling
• Electrical systems

Phase 2

• Increase to 15 MGD average

Phase 3

• Increase to 20 MGD average

🚀 Clean Water Conveyance Improvements

• New Clean Water pump station
• New Clean Water force main
• Designed for 15 MGD average / 25 MGD peak to Eagle Creek

📦 LEAP District Collection System Enhancements

• Regional lift station
• Gravity interceptor
• Dual force mains
• System capacity: 9.44 MGD average / 25.96 MGD peak

💰 Cost Summary

🌿 Environmental & Regulatory Considerations

• Construction primarily within previously disturbed corridors → minimal environmental impact
• Compliance maintained with: NPDES permit requirements and Endangered species protection measures
• Public hearing held — no comments received

📅 Key Schedule Milestones

• PER Submission: January 2025
• SRF Loan & Design: Early 2025
• Phase 1 Construction Start: Early 2026
• Phase 1 Completion: January 2027
• Clean Water Improvements Completion: January 2029

🏛️ Financial & Managerial Capacity

Lebanon Utilities demonstrates strong financial, managerial, and operational capacity, supported by robust asset management and fiscal sustainability programs.

📞 More Information

•  Click here to view the PER Report
• Email your questions to waterwastewaterprojects@lebanon-utilities.com