About Us2021-09-02T22:14:58+00:00

Site Design

Learn More

Equipment & Supplies

Learn More

Tank Installation

Learn More


Learn More

24-Hour Service

Learn More

Northwest Petroleum Service, Inc. (NPS) is a locally owned and operated business that has been serving Wisconsin and Michigan’s Upper Peninsula for nearly 50 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.

With 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

northewest petroleum service area

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 a complete, competent, and thorough solution to any project.

petroleum equipment


From Our Blog

PEI Safety Letter

Did you know that petroleum isn't just for fueling your vehicles!? Petroleum Product of the Month: MONEY! Money has been around since 3,000 B.C. [...]

Read More Articles