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WSSI works with a variety of clients across the Mid-Atlantic as we inspect and maintain all types of Stormwater Best Management Practices (BMPs) – with the goal of making sure these facilities remain in compliance with local stormwater regulations. We use a responsive, efficient, and proactive approach to BMP inspections and maintenance to avoid violations and compliance issues.

Our BMP maintenance solutions not only address the immediate or temporary problems on a site, they also incorporate the long-term management and maintenance that keep a site in compliance with local stormwater regulations and keep BMPs functioning properly.

We are active on BMP sites throughout the project lifecycle.

  • Inspecting sites during construction to verify BMPs are constructed to plan

  • Inspecting BMPs post-construction to identify any potential violations

  • Managing quarterly, routine, and long-term maintenance to keep each BMP facility compliant

  • Resolving urgent maintenance issues or emergency repairs

Above Ground Facilities
  • Wet and Dry Ponds
  • Infiltration Trench
  • Constructed Wetlands
  • Pervious Pavement
  • Rooftop Detention
  • Below Ground Facilities
  • Underground Detention
  • Sand Filters
  • Manufactured BMPs


  • Vegetated Practices
  • Tree Box Filters
  • Bioretention
  • Green Roofs
  • Vegetated Swales

  • Our staff includes

    WSSI staff overseeing BMP construction

    WSSI staff overseeing BMP construction

    • Professional Engineers

    • Licensed Surveyors

    • Licensed Landscape Architects

    • VA DEQ Stormwater Inspectors & Plan Reviewers

    • VA DEQ Erosion & Sediment Control Inspectors & Plan Reviewers

    • Certified Professional in Erosion & Sediment Control

    • Certified Erosion, Sediment and Stormwater Inspectors

    • Certified Inspectors of Sediment and Erosion Control

    • Fairfax County Stormwater Awareness Training

    • National Green Infrastructure Certification

    • OSHA-Certified Confined Space Training

    • ISA Certified Arborists

    • Commercial Pesticide Applicators

    • OSHA 40-hour Hazwoper Training

    • VA Licensed Class A Contractor

    • Certified Nutrient Management Planners

    WSSI designed and maintains this raingarden at our LEED-Gold certified headquarters in northern Virginia.

    WSSI designed and maintains this raingarden at our LEED-Gold certified headquarters in northern Virginia.

    WSSI’s invasive species controls are important for above ground BMPs.

    WSSI’s invasive species controls are important for above ground BMPs.