Norwesco, Inc. is North America's leading manufacturer of proprietary rotationally molded polyethylene tanks for agricultural, water, closed-top industrial and below ground septic and cistern applications. Norwesco was founded in 1939 in St. Paul, Minnesota under the name of Northwest Plastics, Inc. The name was changed in 1973 and at that time Norwesco was ranked as one of the oldest and largest plastic processors in the United States.

During the last ten years Norwesco has significantly expanded their geographic presence through the addition of facilities throughout the United States and Canada. They currently operate 17 plants and are the third largest rotational molder in North America.

Norwesco tanks are used for a wide variety of applications including the storage and/or transport of potable water, gray water, wine, most liquid agricultural chemicals, and many industrial chemicals.

Norwesco polyethylene (poly) tanks are manufactured by means of the rotational molding process, which produces a one-piece, seamless, watertight tank. Linear poly tanks are molded from 100% FDA approved materials and are therefore safe for storage of food products and will not impart any taste or residue.