Norwesco is a leading brand in North America that specializes in the manufacturing of rotationally molded polyethylene tanks. With a history dating back to 1939, Norwesco has established itself as one of the oldest and largest plastic processors in the United States. They offer a wide range of liquid storage tanks, including those for agricultural, water, closed-top industrial, and below ground septic and cistern applications.

Norwesco has expanded its operations over the years, currently operating 14 plants across the United States and Canada. They are known for their commitment to high-quality products and exceptional customer service. In 2008, Norwesco became part of Tank Holding Corp.

The brand takes pride in being the industry leader in the polyethylene tank market and continues to focus on delivering superior products to their customers. Norwesco's rotational molding process, which began in 1980, allows for the efficient production of hollow, complex, and vertical shapes. They are recognized as the world's largest supplier of rotationally molded tanks and rank among the top ten rotational molders in North America according to Plastics News