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Potable Water

Aquastore® is the #1 recognized brand storage tanks for potable water, and Temcor and Conservatek® are world renowned brands for domes and custom reservoir covers.


Aquastore tanks with Temcor domes up to 6MG and above


Safeguarding Potable Water

When it comes to protecting the integrity and quality of your potable water supply, customers trust CST. CST’s Aquastore® tanks with Vitrium™ glass-fused-to-steel (enamel) coating offer the lowest total life cycle costs because the glass coating on the tank panels is never recoated during the entire tank’s life. CST’s HydroTec® (formerly Columbian TecTank®) tanks offer the durability of factory-coated and cured epoxy coatings using our proprietary OptiBond™ process at a low upfront cost. Both coating options are NSF approved. CST also offers galvanized tanks including VULCAN Tanks with and without liners for one of the most upfront affordable water storage options. CST’s Temcor and Conservatek domes and reservoir covers offer custom designs to fit any size and shape tank or reservoir while offering the unmatched low-maintenance and ease of assembly of aluminum. Factory coatings, aluminum materials and bolted designs means CST’s tanks and covers can be constructed in up to 1/3 the time of concrete storage tanks and field welded storage tanks.

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CST's in-house professional engineering teams and ISO certified manufacturing process allow CST tanks, silos and covers to be custom designed to meet each customer's specific needs. This includes ground storage tanks in excess of 6 million gallons, composite elevated tanks greater than 2 million gallons, silos with heights exceeding 100 feet and aluminum domes and covers spanning greater than 200 feet. CST also supplies smaller tanks and other type covers that can be manufactured and constructed safely and quickly.

CST potable water tanks and covers can be designed to AWWA, EN, DWI, ISO and most other domestic and international standards to comply with local, regional and national building practices. Our proprietary design tools, finite element analysis programs and 3D CAD systems make design optimization simple and efficient. This means that the solutions we offer our clients are safe, cost effective and backed by CST since 1892.

Our development of proprietary coatings, creation of unique coating application processes and knowledge of aluminum structures means that we are not satisfied with just being the largest tank and cover manufacture, we want to continue to be the best one. We continuously invest in R&D to support our goals of optimizing designs, continuously improving our current products and developing even more new products to meet the future needs of our customers.

Having manufactured over 250,000 Tanks and 16,000 Covers in over 125 countries, striving for product optimization is only matched by our extensive design, manufacturing and field service experience. From the development of needs and concepts, to final acceptance and one of the best warranties in the industry, no one matches CST's commitment to quality, the customer and the betterment of the potable water industry.


  • Aquastore- Aquastore glass-fused-to-steel tanks are the most recommended water tank in rural water districts where overall cost, dependability and water quality are important attributes of water storage tanks. Larger tanks for urban use are also popular.
  • HydroTec- Hydrotec factory-coated epoxy tanks are the premier epoxy tanks for municipal and industrial water applications where quality is important but upfront cost plays a more important factor in tank section.
  • CST Vulcan Galvanized Tanks- CST’s Vulcan™ and galvanized bolted tanks fill an important niche in the overall water storage tank selection portfolio providing very low upfront cost options when long term durability and environmental degradation are less important factors.
  • Aluminum Domes- CST Cover’s formerly Temcor and Conservatek aluminum geodesic domes are the world’s leading domes for potable water storage tanks of all types. They are precision manufactured, easily assembled and relatively maintenance free.
  • Steel Covers and Roofs- CST’s coated steel and glass-fused-to-steel tank covers offer alternatives to aluminum domes for smaller diameter tanks.