Underground Tank

Fiberglass Underground Storage Tanks

Underground Water Storage Tanks

Fiberglass Underground Storage Tanks combine strength and durability, perfect for storing drinking water, wastewater, and chemicals. These Fiberglass storage tanks have robust exterior and specially designed interior resins ensure long-lasting performance and resistance to underground pressures.

Looking for fiberglass underground solutions? We can help! Call us at 1-863-270-8118 or contact us to discuss your needs.


These tanks can be buried up to three feet deep. For deeper installations or to withstand vehicle loads, we offer customized solutions. Contact us for a tailored quote to meet your specific needs and ensure optimal storage performance.

Fiberglass underground storage tanks are highly customizable to meet various specifications. Each tank includes an inlet, outlet, overflow/drain, vent, and a 20-inch manway, making them ideal for residential, commercial, or industrial use.

Standard tanks can be buried up to 36 inches deep. For deeper installations or traffic-rated needs, please specify your requirements to ensure the tank is engineered for safe and reliable performance. Contact us today at 1-863-270-8118 to discuss your specific needs for fiberglass underground storage tanks.

Underground Fiberglass Features

  • Fiberglass Tank Construction
  • Sizing up to 20,000 gallons
  • Standard 0-2" Fitting Options
  • Standard Tank can be buried up to 36 inches (3') underground (Please specify if you would like a tank that can be buried more than 36 inches.)
  • Traffic-Rated Tanks Available

Underground Fiberglass Benefits

  • Lighter Weight for Easy Installation
  • Resistance to Leaking and Cracking
  • Equipped for Underground Elements
  • Corrosion and Rust Resistant
  • Resin Built to the Type of Liquid Store in the Tank
  • Minimal Site Prep Required
Fittings for the Fiberglass Water Tanks
Standard Fittings Galvanized (up to 2") or PVC (up to 4")
Specialty Fittings Flanged Fittings, ABS, or Other Fittings (Considered Specialty and are Extra)

Acessories

Description Dimensions Weight
PIP Adapter 20" D x 4" -
20" EXTENSION PER FOOT 20" D x 12" 20
24" EXTENSION PER FOOT 24" D x 12" 27
30" EXTENSION PER FOOT 30" D x 12" 35
Lift Eye - -
NYLON Tie-Down Strap 4" Wide 5
Jaw-&-Jaw Turnbuckle, 2 - 10
6-Hole Junction B w/ rings 9"x14"x9" 6

Fiberglass Tank Uses and Options

  • Versatile Applications:
    • Rainwater collection
    • Potable water storage
    • Backup supply for wells
    • Irrigation storage
  • Robust Contruction:
    • Withstands underground pressure
    • Prevents folding or collapsing
  • High Chemical Resistance:
    • Protects against underground elements
    • Ideal for storing chemicals

Looking for fiberglass underground solutions? We can help! Call us at 1-863-270-8118 or contact us to discuss your needs.


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Contact Us

For immediate assistance, call: 863-270-8118 during business hours are Monday to Friday, from 8am to 8pm (Eastern Time). Rest assured that a knowledgeable and friendly team member will respond to your inquiry as quickly as possible within these hours. 

At WATER-STORAGE-TANK.COM, we specialize in providing high-quality water storage solutions for a wide range of applications. From residential and agricultural needs to commercial and industrial projects, we offer an extensive selection of water tanks, trailers, and accessories to meet your specific requirements. Our mission is to deliver durable and reliable products that are built to last while offering exceptional customer service and expert support. Whether you need a single tank or a complete system, Water-Storage-Tank.com is your trusted partner for all your water storage needs.