Sewer System Capacity Model - 2026

The City of Columbus seeks professional engineering services to advance the Sewer System Capacity Model for 2026, a critical tool for evaluating and addressing capacity issues within the city’s sanitary and combined sewer collection systems. The project involves refining the existing model to reflect the most current infrastructure configuration, improving calculation methodologies for greater accuracy, and enhancing its operational usability to support real-world applications such as capacity assessments, sewer system operations, and flow monitoring with comprehensive data analysis. This work is essential to maintaining compliance with Ohio EPA consent orders related to sanitary sewer overflows and combined sewer overflows, while also continuing the city’s efforts to reduce water-in-basement incidents and develop cost-effective solutions to system deficiencies. The update will directly support ongoing initiatives including Blueprint Columbus and the 2015 Integrated Plan, ensuring alignment with long-term wet weather management goals. The model’s enhancements will enable better planning for new development, system performance under evolving conditions, and day-to-day operational decisions. Solicitation RFQ033267 was posted on July 17, 2026, with proposals due by August 28, 2026. All inquiries and submissions must be directed to the designated point of contact at DPUCapitalRFP@columbus.gov, and the project’s performance is expected to occur within Ohio, under the oversight of the City of Columbus.