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Wastewater Cover and Storage Solutions

CST is the industry leader in wastewater flat covers, domes and tanks that provide superior material performance while requiring the lowest maintenance.

Winnipeg MB Beam Supported

CST aluminum flat covers provide superior longevity and odor control.


Protecting Your Product and the Environment

When it comes to wastewater covers and tanks, no one can match CST experience and product selection. There are many companies that have come and gone, but CST has been there since 1897 and will continue to be there well into the future. All our wastewater products are manufactured in ISO Certified facilities under the closest of production controls. In addition to our lines of standard products, CST’s in-house engineering teams can provide custom designs and PE stamped drawings.

Las Vegas NV Wastewater Side View

CST is the leading manufacturer aluminum covers and domes with over 16,000 installations worldwide. Lightweight aluminum construction, hinged access and modular designs make CST covers easy to install, easy to use and easy to maintain. Whether the application requires extruded or formed, circular or rectangular, unsupported or supported, domed or flat, odor control or containment, full coverage or just lauder, we have the right solution to match each application all from one manufacturer - CST

Above Ground Liquid Storage Solution

CST’s factory-coated, above ground liquid storage solutions range from HydroTec® TRICO BOND EP® epoxy coated tanks to Aquastore® Vitrium™ glass-fused-to-steel enamel tanks. Applying our coatings in factory controlled environments along with our modular designs ensures long lasting performance and construction in up to 1/3 the time of field welded tanks. All of CST’s storage tanks provide the lowest life cycle costs in their class.

CST’s solutions include:


  1. Extruded Flat Covers
  2. Formed Flat Covers
  3. Domes



  1. Storm Water Retention Tank
  2. Sludge Tank
  3. Clarifier
  4. Trickling Filter
  5. Flow Equalization
  6. SBR
  7. Aeration Tanks


When you need superior performance, low life cycle costs and world renowned support, you need to call CST.