You’ve come to the right place if you are a water transportation facility or water-based vehicle/equipment cleaning operation and desire to reduce concentrations of pollutants running off your site.

In 1990, permitting regulations were developed by the U.S. Environmental Protection Agency (EPA) under the National Pollutant Discharge Elimination System (NPDES). These regulations control stormwater discharges under Sector Q covers Water Transportation Facilities with Vehicle Maintenance Shops and/or Equipment Cleaning Operations.

Discharges of ballast or bilge water, sanitary wastes, pressure wash water, and cooling water originating from vessels must be covered by a separate NPDES permit if discharging to receiving waters or to a municipal separate storm sewer system.

Whatever the nature of your business, and the activities you engage in to run your business, you are at risk of releasing pollutants such as TSS, organics and heavy metals into receiving waters or to a municipal separate storm sewer system. You need to stay in compliance; we can help you navigate these regulations.  We get it and we have solutions.

Facility Types and Sources:

  • Marine Cargo Handling (SIC 4491) and Marine Terminals
  • Marine Terminals (SIC 4412, SIC 4424, SIC 4432, SIC 4449)
  • Cruise Ship Terminals (SIC 4492) maintenance shops

Facility Types and Sources:

  • Ferry Terminals (SIC 4482) maintenance shops
  • Towing and Tugboat Services (SIC 4492)
  • Marinas (SIC 4493) wash racks

General Permit Designations:

  • Sector Q – Water Transportation
  • SIC 4412 – 4499


zinc b gone stormwater treatment

Our filtration systems are designed to remove many of the pollutants that your site can generate: TSS, heavy metals, oil and grease. Our treatment trains provide progressively cleaner water to maximize efficiency. The heart of our treatment systems for metal processing facilities is the Aquip® enhanced stormwater filtration system. Aquip® may be paired with our Clara® stormwater plug-flow separator or our Purus® stormwater polishing system for ultimate filtration results.

Once your treatment system is installed, StormwateRx trains your staff to operate and maintain the equipment for the best results at the lowest cost. We follow up with inspection and maintenance service to ensure your treatment system operates at maximum efficiency and keeps you in compliance with changing regulatory requirements.

Our stormwater treatment systems work, and we have the track record to prove it. Many of our water transportation industry clients are repeat customers and referral sources. Our customers believe in us because our passion for clean water drives us to build the finest industrial stormwater filtration systems available. We know our products will serve the needs of your business, efficiently and cost-effectively.

For more information about StormwateRx products and case studies visit or call StormwateRx at 800.680.3543.

Water Transportation Facilities

Alaska Marine Lines

Alaska Marine Lines, Seattle, Washington (Aquip® 160SBE, Aquip® 110SBE, Aquip® 210SBE)

Northland Services

An ISO 14001 Certified Facility

Northland Services, Seattle, Washington (3 @ Aquip® 12TXE, 2 @ Aquip® 210SBE)