Sanitary Sewer Evaluation & Improvements
Miller & Associates partnered with the City of Mankato to assess and rehabilitate its sanitary sewer collection system following increased lagoon flows and recurring maintenance issues. The $2.3 million project included system evaluation, design, and construction services to improve system performance and reduce inflow and infiltration, supported by multiple state and federal funding sources.
Project Features
- Inspection of ~50,000 linear feet of sanitary sewer via Closed-Circuit Television (CCTV)
- Identification of inflow/infiltration & root intrusion issues
- Rehabilitation of sewer mains & manholes
- Cured-In-Place Pipe (CIPP) lining
- Manhole rehabilitation & improvements
- Street reconstruction associated with utility work
Services We Provided
- Preliminary Engineering Report (PER)
- System evaluation & data review
- Surveying & design
- Preparation of construction documents
- Funding coordination
- Bidding & contract administration
- Construction observation & on-site support
Miller & Associates worked with the City of Mankato to evaluate and improve its sanitary sewer collection system following increased lagoon flows, lift station surcharging during rain events, and ongoing maintenance challenges caused by root intrusion. Using Closed-Circuit Television (CCTV) inspection of approximately 50,000 linear feet of sewer, our team identified areas of inflow and infiltration and developed a clear path forward.
Guided by a Preliminary Engineering Report, the City advanced a $2.3 million rehabilitation project that included Cured-In-Place Pipe (CIPP) lining, manhole rehabilitation, targeted sewer main improvements, and associated street reconstruction. Miller & Associates provided design and construction phase services, helping the City strengthen system performance, reduce maintenance demands, and extend the life of its infrastructure. The project was funded through Community Development Block Grant (CDBG), State Revolving Fund (SRF), and USDA-Rural Development programs.