Northwest Petroleum Service, Inc.

Northwest Petroleum Service, Inc. (NPS) is a locally owned and operated business that has been serving Wisconsin and Michigan's Upper Peninsula for the past 40 years. We are pleased to provide the Statement of Qualifications for petroleum equipment installation and repair services. Our experienced and professional team at NPS will provide you with an efficient design for your specific needs at a competitive price while ensuring compliance with State and Federal regulations.

Service MapWith a combined office and warehouse space of over 16,000 square feet, our headquarters is located in Wausau, Wisconsin with service dispatch direct from these convenient locations:

  • Madison, Wisconsin
  • Wausau, Wisconsin
  • Eau Claire, Wisconsin
  • Munising, Michigan
  • Ishpeming, Michigan

Northwest Petroleum Service, Inc. is listed on the Approved Installation, Removal and Testing Reference for both Wisconsin and Michigan's Upper Peninsula. NPS is an active member of Wisconsin Petroleum Marketers and Convenience Store Association (WPMCA) and the Petroleum Equipment Institute (PEI).

Our Sales team has over 80 years of combined experience in the Petroleum Industry. Our team is educated in Local, State and Federal regulations to ensure projects are in compliance from start to finish. We are also familiar with major oil brand image and construction requirements and with many regional oil companies such as BP, Mobil, Shell and Citgo. NPS works closely with our customers to choose the most efficient design for Aboveground and Underground installations.


Northwest Petroleum Service, Inc., along with our sister company REI Engineering, Inc., provide with confidence the following services:

  • Installation of Aboveground and Underground Petroleum Handling Equipment
  • Design and Project Management
  • Free 24 hour Service Phone Support
  • 24 hour Service of Petroleum Equipment
  • Certified Line and Cathodic Protecting Testing
  • Regulatory and Compliance Testing
  • Aboveground and Underground Vehicle Lifts
  • Lube and Used Oil Systems
  • Computer Aided Drafting (CAD) and Design Services
  • Tank Removal Site Assessments (TSSA)
  • Subsurface Investigations
  • Petroleum Environmental Cleanup Fund Award (PECFA) Projects

Northwest Petroleum Service, Inc. would like to establish an on-going relationship based upon mutual respect and understanding. The skilled disciplines employed by the team at NPS will evaluate your situation and provide

Join our dynamic Northwest Petroleum Service, Inc. team in Wausau, WI. Be a part of our motivated team and apply your skills to challenging, interesting and meaningful projects.


If a customer drives off with a hose and/or nozzle still in their vehicle, what should we do?
If a customer collides with a dispenser, what should we do?
Why is my tank monitor sounding/blinking?
And More...