Storm Water


Storm Water

Urban Water Resource Management

Sustainable Water Resource Planning Protects Property

In our modern world, urban community development has fundamentally changed waterflow patterns. Impervious surfaces – roads, parking lots, commercial infrastructure – now, more than ever, need systems to carry rainwater to waterways. In fact, there are around one million miles of water pipeline and aqueducts in the U.S. and Canada, enough to circle the globe 40 times.

Symbiont’s water resource engineers, scientists, and technicians help communities identify, develop and implement cost-effective and reliable water resource management plans and systems to control flooding, prevent basement backups, address capacity limitations, and reduce runoff-related pollutant loads caused by combined sewer overflows (CSOs), sanitary sewer overflows (SSOs), and urban runoff. 

Combining local community knowledge with the experience gained from numerous water resource projects, and using tools such as hydrologic and hydraulic models, we identify and evaluate the effectiveness of a wide range of control measures.  Whether the most effective control measures involve structural improvements, implementation of best management practices, or a combination, each solution is designed to meet your community’s needs now and in the future. 



Symbiont's Storm Water Solutions

Unlike pollution from industry or sewage treatment facilities, storm water pollution arises from daily activities of people everywhere as rainwater and snowmelt run off streets, lawns, farms, and construction and industrial sites, picking up pollutants on the way to receiving waters. Our environmental engineers assist in storm water management, from planning to design and data management, including:

  • Adaptive management assistance
  • Permitting and plans
  • Surface Water Thermal Studies
  • System analysis and planning
  • GIS-based floodplain mapping
  • Troubleshooting
  • Storm water conveyance systems
    • Sewers
    • Swales
    • Pump stations, force mains, gravity sewers
    • Grading and drainage plans
  • Storm water treatment and storage systems
    • Green Infrastructure
      • Rain gardens/barrels
      • Bioswales
      • Porous pavement
      • Green roofs
    • Detention ponds
    • Chemical treatment systems
    • Real-time control systems
    • Flow equalization
    • pH control



Symbiont's Sanitary/Combined Collection System Solutions

For cities, villages, and towns across the nation, our combined, sanitary, and storm sewer system engineering work has resulted in reduced sewer overflows, basement backups, and flooding. Our expertise has enabled municipalities to make smart decisions to protect and enrich their communities.

Our hydraulic and hydrologic modeling services provide insights you can trust. Whether you’re developing a long-term control plan (LCTP) or are planning upgrades to your collection system, our services are tailored to meet the needs of projects both large and small, including:

  • Infiltration/inflow analysis and remediation
  • CSO/SSO management
  • Conveyance system design, modeling, and analysis
  • Long-term collection system master plans
  • Storage and real-time control systems
  • Pump station design, construction, and operation
  • pH/H2S/odor control Capacity, Management, Operations, and Maintenance (CMOM) programs
  • Basement backup remediation


Questions? Contact us at 414.291.8840 or Email Us.