Water Processing and Storage Tanks

Steel tanks fabricated to NSF 61 and AWWA Standards


API Tanks Fabricated by Southeastern Construction with Construction Worker in Front with Blue Helmet

Southeastern Construction fabricates steel water processing, water storage, and potable water tanks to NSF 61 standards. The National Sanitation Foundation’s standards help keep potable water in safe, drinkable conditions for the public. The NSF/ANSI Standard 61 signals that a product is safe to be installed in a potable water system for public use or consumption.

Steel water processing and storage tanks are also fabricated to AWWA standards by Southeastern Construction. The American Water Works Association standards describe minimum requirements for design, installation, performance, and manufacture of products used in the drinking water industry.

Examples of water storage and water processing tanks that we fabricate:


  • Steel water treatment tanks
  • Steel water storage tanks
  • Distillation tanks
  • Condensate tanks
  • Condensate storage tanks
  • Water holding tanks
  • Deaerators
  • Hydro-pneumatic vessels
  • Condensate polishers
  • Steel potable water storage

Applications of water processing and storage tanks:


  • Industrial
  • Municipal
  • Commercial
  • Schools
  • Hospitals
  • Prisons
  • Hotels
  • Resorts/Casinos
  • Apartment Complexes
  • Housing Developments
  • RV Parks and Farms

Water Processing and Storage Tank Dimensions

Water processing and storage tanks come in various sizes to accommodate different capacities and applications. Along with shapes and heights, we offer several options in diameters to assist you with the specific requirements of your application, ranging from 36″ to 192″.


  • 36″ diameter tanks: Capacity around 100 to 300 gallons (suitable for small-scale water storage or processing applications, such as residential or small commercial systems).
  • 48″ diameter tanks: Capacity around 300 to 500 gallons (commonly used in small to medium-sized commercial or industrial applications).
  • 72″ diameter tanks: Capacity around 1,000 to 2,000 gallons (suitable for larger-scale commercial or industrial applications).
  • 96″ diameter tanks: Capacity around 3,000 to 5,000 gallons (ideal for industrial or agricultural water storage applications).
  • 120″ diameter tanks: Capacity around 7,000 to 10,000 gallons (often used for large-scale agricultural or industrial applications).
  • 144″ diameter tanks: Capacity around 12,000 to 18,000 gallons (suitable for industrial or municipal water storage applications).
  • 192″ diameter tanks: Capacity up to 50,000 gallons (commonly used for municipal water storage or other large-scale water processing applications).



Water Processing and Storage Tank Filters

Pressure Filters

Pressure Filters

Gravity Filters

Gravity Filters

Recent Water Processing and Storage Tank Projects

RO Water Holding Tank

Raw Water Tank

Condensate Storage Tank

Pressure Tank

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