LMWWTP High-Rate Treatment Facility Progressive Design Build

The Metropolitan Sewer District of Greater Cincinnati (MSDGC) is seeking qualified design‑build firms to deliver the Little Miami Wastewater Treatment Plant (LMWWTP) High‑Rate Treatment (HRT) Facility. The project adds 115 mgd of wet‑weather treatment capacity, upgrades pump stations to handle 215 mgd, constructs a new HRT building, demolishes obsolete structures, and upgrades electrical and control systems. The procurement follows a Progressive Design‑Build (PDB) method in two phases: Phase 1 (design and pre‑construction services) and Phase 2 (construction, startup, and acceptance testing). A short‑list of three firms will be invited to submit a formal RFP after the qualification stage. The contract award is slated for June 2027 with final project completion no later than 2035. • Scope includes site investigations, alternatives analysis, detailed design, permitting, demolition, construction, electrical upgrades, and commissioning. • Required deliverables: design documents, cost models, GMP amendment, guarantees, warranties, and performance testing. • Project budget is sizable (estimated multi‑hundred‑million‑dollar program). • Mandatory qualifications: proven experience on large‑scale wastewater treatment or civil infrastructure projects, financial capacity (bonding ≥ $400 M), appropriate licensing, and compliance with diversity/inclusion goals. • Evaluation weighted on technical expertise, past performance, financial strength, and inclusion program adherence.