Ohio State University’s New Stormwater Biofiltration Project: A Sustainability Initiative
Apr 16, 2025
In a significant step toward improving stormwater management and campus sustainability, the Sustainability Institute at Ohio State University (SI) collaborated with CampusParc and Advanced Drainage Systems (ADS) to install three high-rate biofiltration systems on campus. These EcoStream units are designed to enhance water quality by filtering out pollutants from parking lot runoff, providing both environmental and research benefits.
Project Background
The initiative began in mid-2022 when SI explored the feasibility of installing three donated biofiltration structures in surface parking lots. CampusParc helped identify optimal locations with sufficient runoff potential, while researchers from the Environmental Sciences Graduate Program assessed site suitability based on slope and drainage.
Despite initial funding challenges due to high contractor costs, Ohio State reengaged CampusParc in early 2024 to seek alternative installation options. CampusParc leveraged its vendor network, securing a bid that was less than half the initial estimates. This cost-effective solution allowed the university to move forward with the installation, which was completed in October 2024. In addition to contributing project-management services for the installation, CampusParc contributed $2,000.
How Biofiltration Works
Parking lots contribute to pollution, accumulating chemicals, heavy metals, salts, and micro-polymers from vehicles. The EcoStream biofiltration units use engineered media to filter these contaminants, replicating natural soil drainage while maintaining high flow rates. A tree is also installed at one of the three units, further enhancing pollutant uptake and adding aesthetic value. Water quality monitoring of the inflow and outflow of the EcoStream units began in December 2024. Preliminary results show that the units are performing as expected with reduced pollutant concentrations after passing through the media.
Key Benefits of the Project
- Environmental Impact: The biofiltration systems improve water quality by removing pollutants from stormwater runoff before it reaches local waterways.
- Research and Education: The project serves as a living lab, allowing Ohio State students and faculty to study stormwater management. A graduate student will base her master’s thesis on the performance of these units.
- Infrastructure Improvements: Two of the three selected parking lots also required asphalt repairs, which were integrated into the project for added campus enhancements.
- Long-Term Sustainability: The units are permanently installed, with data collection and performance monitoring planned for at least two years.
A Model for Sustainable Collaboration
This project exemplifies successful collaboration between Ohio State, private industry, and campus collaborators. By combining donations, cost-effective solutions, and innovative research, the initiative advances sustainability goals while providing real-world learning opportunities for students. The EcoStream units will continue to support Ohio State’s commitment to environmental responsibility and infrastructure resilience for years to come.
For more information about the EcoStream Install Project, visit SI’s article on Advanced Drainage Systems Collaboration Supports Ohio State Research, Students and Operations.
