About Us

Founded on an entrepreneurial spirit and passion for his craft, Superior Tank was established in 1984 by Mr. Jess E. Marquez. Currently acting as Chairman of the Board, Mr. Jess Marquez pioneered the application of powder coatings to the bolted steel tank, which revolutionized the storage tank industry. Jess, with the help of his family, transformed Superior Tank into one of the world’s leading bolted and welded steel storage tank manufacturers. Over the last three decades, considerable time, effort and financial investment have been made in the latest technology in order to refine our manufacturing processes and production capacity. The result being the industry’s premier bolted and welded steel storage tank, crafted with precision, durability and passion.

Personifying Jess’ greatest traits, integrity and honesty, the Superior Tank team strives every day to exemplify these core principles to each of our partners and customers. We take pride in the quality of our work to deliver you a Superior product. Additionally, we strive to provide an exceptional customer experience and make you feel like part of our family.

As a company focused on innovation, Superior Tank constantly strives to advance the quality of our products and processes, while prioritizing customer service and relationships with our customers.


Superior Tank Co., Inc. has a long and well-established history as a manufacturer and builder of bolted steel tanks and welded steel storage tanks. Our background dates back to 1984 when our Founder, Jess Marquez started Superior Tank Co., Inc. The company is still is family owned and operated with a focus on outstanding customer service and continuously making our products better. Over the past three decades, there have been numerous milestones.

Founded on Innovation


To better address the needs of our customers, Superior Tank introduced its Welded Tank Division. Through the Welded Tank Division, we are able to fabricate and install welded steel storage tanks throughout California, Arizona and Nevada for a variety of applications. We are able to customize our welded steel tanks to the specific project requirements and provide a wide range in sizes from 10,000 to 2,500,000 gallons.

Welded Tank Division


To better address the needs of our customers, Superior Tank introduced its Welded Tank Division. Through the Welded Tank Division, we are able to fabricate and install welded steel storage tanks throughout California, Arizona and Nevada for a variety of applications. We are able to customize our welded steel tanks to the specific project requirements and provide a wide range in sizes from 10,000 to 2,500,000 gallons.

Galvanized Bolted Steel Tanks


With an established reputation and history, Superior Tank opened up a new Sales & Operations Center located in Houston, TX to better serve our Midwest customers.  The new office contains our Gulf Region Sales Team and functions as home base for our bolted tank erection team. Being located in East Texas allows us to quickly and efficiently build our bolted steel storage tanks throughout the Midwest and Eastern United States.

California Storage Tank Manufacturing


To better assist our growing number of customer base in Latin America, Superior Tank opened a Sales office in Guadalajara, Mexico. Located in Central Mexico, our office features native Spanish speaking staff well versed in the specific needs of our Latin America customers.

Storage Tank Robot Welding


Always looking to advance the precision of our tanks, Superior Tank began a significant investment in the latest manufacturing technology. New machinery including computer guided turret punching press which perfectly creates bolt holes in tank staves without deforming the steel and rough edges.  Shortly thereafter, a robotic welding arm was installed providing accurate and precise welds on tank nozzles, ladder and other appurtenances. The new equipment ensures our bolted tanks and accessories for our welded tanks are precision crafted.

Fire Protection Storage Tanks


To meet the needs of our international customers, Superior Tank achieved FM Certification for our bolted steel tanks designated for fire protection. This internationally recognized standard provides our customers confidence in the level of quality of our bolted tanks for water storage.

API Q1 Certification


Thanks to a proven record of quality and implementation of stringent quality processes, Superior Tank earns the prestigious API Spec Q1 ISO 9001 certification for quality assurance.  We are very proud of this certification as it is the culmination of considerable effort to implement a comprehensive Quality Management System. Our QMS ensures our tanks meet or exceed our customer’s expectations and are delivered on time. We always knew our tanks were outstanding quality & now we have the proof to support it!

Flat Panel Storage Tanks


With decades of experience and history with powder coating bolted steel tanks, we introduced our exclusive Silica Zirconium (SiZr) undercoating. This seal is designed to reduce the spread of corrosion and lengthen the lifespan of our powder coating. Laboratory testing has proven the SiZr seal significantly reduces corrosion damage if the powder coating is severely damaged and can make the difference between a small coating patch and a significant coating repair.

James Marquez


Upon the retirement of Jess Marquez, his son, James Marquez proudly assumes the role of President / CEO.  With decades of experience in the bolted and welded storage tank industry and skilled in leadership, James continues the family legacy of integrity and customer service.


The latest part of our story continues as the powder coating line in our Texas Manufacturing Facility is installed and becomes fully operational. Equipped with some of the most advanced coating equipment, our Texas facility is able to produce powder coated tanks at the same level of quality as our California bolted tank manufacturing plant.

NSF Certified Bolted Steel Tanks


The latest addition to our collection of certifications is the NSF 61/372 Certification of our bolted steel tanks. This special certification signifies our bolted tanks are approved for storage of drinking water and meet specific material and design criteria.


Superior Tank Co., Inc. introduced the Heli-Hydrant in 2018 as a new and innovative solution for remote firefighting. The Heli-Hydrant is a portable water tank system that can be quickly activated and filled to provide a reliable source of water in remote or hard-to-reach areas. The system is designed to be easy to use and can be ready to use in minutes, allowing firefighters to quickly access water and begin fighting fires. The Heli-Hydrant has been widely praised by firefighters and emergency responders alike for its effectiveness and efficiency in combating wildfires and other emergency situations.


In 2020, Superior Tank Co., Inc.’s Gulf-Region Division in Texas celebrated the successful launch of our new manufacturing facility, which went online and shipped out its first tanks to customers. Equipped with the latest technology and manufacturing processes, the facility is designed to meet the highest standards of quality and durability. The launch of this new manufacturing facility marks a significant milestone for Superior Tank Co., Inc.’s Gulf-Region Division in Texas, and demonstrates the our ongoing commitment to innovation and excellence in storage tank manufacturing.



In 2023, Superior Tank Co., Inc. installed a new laser cutting system to streamline the production of its bolted steel tanks. This advanced cutting technology allows for precise and efficient cutting of the steel panels and components that make up our tanks. With this new laser cutting system, Superior Tank can produce high-quality tanks with even greater accuracy and speed than before. The installation of this cutting-edge technology is a testament to Superior Tank Co., Inc.’s commitment to staying at the forefront of the industry and providing its customers with the best possible products.

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Innovation is one of our core beliefs and we are always looking for ways to improve our product in order to ensure that we have the highest quality bolted and welded steel storage tanks on the market. Advancements to our powder coating line, SiZr Seal and EPDM gasket have enhanced the durability and functionality of our tanks.


Superior Tank continuously aims to improve its processes in order to maintain productivity and efficiency, so that we can deliver a high-quality product to our customers at a competitive manufacturing time; all while maintaining API SPEC Q1, FM Approvals, NSF 61/372 and ISO:9001 certifications


As a family business, we understand the importance of building and nurturing relationships with each one of our customers, vendors and employees. Providing exceptional customer service is at the forefront of our mission and is instilled in the minds of each employee here at Superior Tank.


ANAB Accredited

License Number 2141



API Spec Q1
License Number Q1-2039
NSF Certified

C0349754 & C0349755

FM Approved



Jess Marquez
Chairman of the Board & Founder

Mr. Jess E. Marquez, Chairman of the Board & Founder of Superior Tank, is a true American success story. Founding the company at 54 years old in 1984, Jess decided to take a huge leap of faith, one that he had been preparing for his whole life. Garnering over 40 years of experience working in the steel industry since arriving to the United States, Jess had the knowledge to create a bolted tank which was superior to what was being produced at the time. Read More

James Marquez
President & CEO

James Marquez embodies the dedication to hard work started by his father, Jess. James started in the family storage tank business working in the manufacturing facility. After high school, James attended Cal Poly San Luis Obispo and received his degree in Construction Management.

James joined the company full time in 1992 and served as Chief Financial Officer and Engineering Manager for over 10 years. Read More

George Marquez
Inside / International Sales Manager

George Marquez, has over 30 years of experience in project management, estimating & sales in the steel storage tank industry with Superior Tank. Currently, George serves as Sales Manager at the Corporate Headquarters, where he oversees bolted tank sales for sections of the United States and International markets. Joining the company full-time in 1987 after completing his B.A. degree in Political Science from Cal Poly San Luis Obispo, George began his career in the field to gain product knowledge and installation experience.Read More

Eric Marquez
Operations & Plant Manager

Eric Marquez, oldest of the four sons, is the manufacturing mastermind and Plant Manager here at Superior Tank who brings over 33 years of knowledge and experience in the steel tank industry. Beginning work in the family business at the age of 16, Eric has become well versed in just about every aspect of the product, including field operations, manufacturing, production and logistics. Since joining the company full-time in 1985, Eric has manufactured nearly all of Superior Tank’s bolted tanks while leading by example and hard work, just how his father had taught him.Read More

Lewis Marquez
Bakersfield Division Branch Manager

Lewis Marquez is a seasoned veteran in the steel storage tank industry with over 30 years of experience working at Superior Tank. Serving as the Branch Manager of the Bolted Tank division in Bakersfield, CA, Lewis oversees the day-to-day operations and manages all sales for Northern California. Working for Superior Tank since its opening day in 1984 as a Field Crew Operator, Lewis was heavily involved in getting the company off the ground. Leading to roles in Estimating, Sales, Project Management and Operations, Lewis has shown his drive to provide each of his customers with the highest quality product with a seamless installation.Read More

Jhon Godoy
CIO / Production Manager & Senior Quality Management Representative

Jhon joined the company full time in 2000 after graduating with an Industrial Design Degree from Pontifical Bolivarian University in Colombia. Jhon currently leads the IT, Production, and Quality Assurance Departments. As CIO, he is deeply committed to the philosophy that technology is a means to a competitive modern enterprise. Jhon is extremely passionate about our Quality Management Systems which ensures our bolted steel tanks meet or exceed our customers’ expectations.Read More

Michael D. Anderson
Bakersfield Division Manager

Michael heads up the Welded Tank Division based in Bakersfield, CA. Mike has established himself as a hard worker and a diligent construction professional with vast experience in small and large capital construction management, safety leadership, mentoring, maintenance planning and construction administration. Over the last 27 years, Mike has successfully completed over 70 million dollars in small scale pilot projects with zero work days lost due to accidents. Read More