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Fresh Water – Waste Tanks


When you need a unique tank to meet your specificaitons. Specify resin, wall thickness, color, mold-in graphics, modify an existing tank, or design a completely new tank.DuraCast Marine Tanks

  • Capacities from 1 to 500 gallons
  • Four duty ratings available– Water (1.2), 1.5, 1.9, & 2.5 S.P.G.
  • Custom installation of optional fittings
  • Translucent Natural White color provides visible content level
  • FDA compliant polyethylene for safe storage of water and foodstuffs
  • One (1) year warranty –no cracking, tearing, or splitting


Polyethylene general purpose tanks are used for storage of potable water, waste water, chemicals, or solids. Because they have superior mechanical properties, high stiffness, excellent low temperature impact strength, and outstanding environmental stress crack resistance, they stand up well in tough environments.

General purpose tanks have a high resistance to both physical and chemical attack. This makes them excellent containment vessels for a wide range of diverse contents from aggressive and corrosive chemicals to food products. General purpose tank contents are typically industrial chemicals, liquid food products, potable water, or waste water.


DuraCast Irregular Shaped Marine TanksThe overall general toughness and excellent chemical resistance of polyethylene to a wide array of wet and dry industrial chemicals and food products makes it ideally suited for storage tanks. Dura-Cast general purpose tanks are made with FDA compliant UV stabilized polyethylene. They comply with U.S. Food & Drug Administration regulation 21CFR 177.1520 (1) 3.1 and 3.2 for storage of potable water. This permits it to be used as an article that can be in contact with potable water or food products.

General purpose tanks can be used indoors or outdoors. Because the resin is UV stabilized, it will not breakdown under harsh outdoor weather conditions or under prolonged exposure to fluorescent lights. The natural opaqueness of polyethylene permits easy viewing of content levels.

Because general purpose tanks are rotomolded, they are of single piece construction, seamless, have consistent tank wall thicknesses, and are stronger at wall joints and corners.

General purpose tanks are available with Water (1.2 SPG), Standard (1.5 SPG), Heavy (1.9 SPG), and Super (2.5) duty ratings. Standard color is Natural White, but tanks can be ordered with green, gray, black, blue, or your choice of custom color under our Tank-Your-Way Program.

Review Tank Specifications

Visit our Marine Tank specification page; download detailed drawings and review our various sizes and configurations.