Water Processing & Storage Tanks

Steel tanks fabricated to NSF 61 and AWWA Standards

Dixie Southern 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 may also be fabricated to AWWA standards. 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
API 620 Tank, API Shop Fabricated Tanks from Dixie Southern
API 620 Tanks

The design configuration of API 620 requires that the user has an elevated or flat bottom on which to set the stainless-steel tank. This type of storage tank has a single, vertical, central axis of revolution, and the tank is used for products that have high internal pressures, such as liquified natural gas and cryogenic tanks. Available as a stainless-steel tank or carbon steel tank.

API Tanks and API Shop Fabricated Tanks from Dixie Southern
API 650 Tanks

The design configuration of API 650 covers tanks that support the whole bottom evenly and tanks in non-refrigerated service that have a maximum design temperature of 200 degrees F. API 650 tanks can store oil, gas, chemical, water, and biofuel and are some of the most common steel tanks in the oil industry. Available as a stainless-steel tank or carbon steel tank.

Our API Tanks are designed, fabricated, and delivered to your facility worldwide.
  • Our chemical tank fabrication process meets the API 620 and API 650 standards
  • API storage tanks fabricated from carbon and stainless steel
  • Legal load, oversized, super load, custom heavy storage tanks
  • Lined internally for special applications
  • Can be used across many industrial markets

API Tank Industries Served

We serve the exacting needs of facility operators, EPC contractors, general contractors, and OEMs in oil and gas and multiple other industries with our stainless-steel tanks and carbon steel tanks.

Oil & Gas


chemical treatment


food & beverage processing


mining & minerals




power generation


water & wastewater treatment


pulp & paper


waste treatment



The Dixie Southern Process

5 Steps to Delivery of Your Custom API Tank


Our professional drafters design your API steel tank to meet API standards.


You review our API storage tank design before we procure materials and begin fabrication.


Our chemical tank fabrication involves cutting edge design and manufacturing processes to ensure that your API tank meets specifications.


API Tanks are inspected in accordance with the appropriate API standard and the corresponding label is attached.


Your API shop fabricated tank is delivered to your facility anywhere in the continental U.S.


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 API Tank Projects

RO Water Holding Tank

Raw Water Tank

Condensate Storage Tank

Pressure Tank

Tell us more about your project

American Water Works Association Member
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