Fiberglass Below Ground Storage Tanks
Underground Fiberglass Tanks
Corrosion-Resistant Underground FIberglass Storage Tanks
Take your industrial storage operation to the next level with a hidden tank setup that optimizes space. Underground Fiberglass Tanks from Tank Depot offer a corrosion-resistant, structurally sound, and long-lasting storage solution for demanding applications — from rainwater harvesting and stormwater detention to chemical storage, wastewater treatment, and DEF containment.
Built to comply with AWWA D120, NSF/ANSI 61, NFPA 22, and UL-1316, these tanks are engineered for burial and long-term durability in municipal, commercial, and industrial sites.
Our underground fiberglass tank line ranges from
1,000 gallons to 60,000 gallons
Why Choose Underground Fiberglass Tanks from Tank Depot?
Our industrial below ground storage fiberglass tanks are trusted by engineers, municipalities, and infrastructure professionals countrywide. From a simple underground fiberglass water tank for your business to a massive fiberglass underground fuel storage tank, we have the certified solution for your project.
Why Choose Underground Fiberglass Tanks from Tank Depot?
Our industrial below ground storage fiberglass tanks are trusted by engineers, municipalities, and infrastructure professionals countrywide. From a simple underground fiberglass water tank for your business to a massive fiberglass underground fuel storage tank, we have the certified solution for your project.
Advantages of Underground Fiberglass Tanks
Lightweight
Underground Fiberglass Tanks are lightweight, therefore easily transported to the customer’s location, and designed for efficient and quick installation.
Easy Installation
Ensuring a low-cost, long-life solution, we provide the industry with exceptional quality fiberglass belowground tanks and dedicated customer service.
Long-Lasting
Designed to meet AWWA D120, NFPA 22, and NSF 61 standards as needed, our underground fiberglass tanks offer durable performance for years.
Corrosion Resistance & Non-Metallic
Fiberglass underground tanks are made of corrosion-resistant material, eliminating the possibility of either external or internal rusting of the tank or chemical breakdown.
Anti-Floatation Anchoring Systems
Prevent underground frp tank uplift in high water tables with 3 options for anchoring belowground fiberglass tanks.
Certified and Compliant
AWWA, NSF, UL, NFPA-ready designs.
Double Wall for Double Protection
The perfect solution for storing hazardous liquids below ground including fuel and chemical containment.
Underground Fiberglass Tank Anchoring Features
Underground Fiberglass Tanks are installed with high soil load tolerance and offer three options for anchoring, known as Anti-float systems. Each option includes physical and resistance control, along with P.E. stamps for over 40 states.
1. One option is the Concrete Deadman System, which comes complete with fastening points, clamps, and belts, providing a fully incorporated anchoring system.
2. Another option is the TankAnchor system by FTS, designed with higher safety aspects and shallower depths for submerging. This system doesn’t require special tools and is constructed from materials resistant to corrosion. It is compatible with both single and double walled tanks and comes with P.E. stamped computations.
3. Finally, the fiberglass deadman anchoring system offers adaptable anchoring points. It utilizes bulged fiber strengthened plastic straps, invigorated connection screws, and secure sockets, providing a comprehensive anchoring solution.
Underground Tank Applications
Potable Water
NSF 61 and TCEQ-approved for safe drinking water storage. Our underground fiberglass water storage tanks are ideal for municipal systems, fire protection, and private cisterns.
Fire Suppression (NFPA 22)
Designed for NFPA 22-compliant systems, our underground frp tanks stand ready for emergency response systems and dependable water reserve even in dense areas.
Chemical Storage
Our frp tanks are made of resins optimized to resist corrosive substances and hazardous liquid storage.
Wastewater & Sewage
For residential, industrial wastewater treatment systems, commercial, or municipal projects, our tanks provide a durable, leak-proof solution for wastewater and sewage containment.
Rainwater Harvesting & Stormwater Reuse
Some commercial applications call for bulk storage of rainwater with limited space, making underground fiberglass water tanks the perfect solution.
Fuel and Petroleum
Our UL certifications mean our belowground frp tanks are safe for the storage of fuels, oils, biofuels, and other petroleum products.
Pipeline Sump Tanks
Our buried fiberglass tanks offer resilient storage for hazardous liquid in leaks and spill containment application at low points along pipelines.
DEF (Diesel Exhaust Fluid)
Storage for regulated diesel emissions compliance.
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Underground Fiberglass Tank Installation Benefits
✔ Low Maintenance
Low lifecycle cost and minimal maintenance.
✔ Customizable
High degree of customization for complex projects.
✔ Corrosion-Resistant
Exceptional corrosion resistance, preventing internal and external degradation.
✔ Easy to Handle
Dual containment for added layer of protection with leak prevention.
✔ Relocation
Lightweight for remote or challenging job sites.
Consult our engineering team for H-20 traffic-rated tank options.
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FAQs: Underground Fiberglass Tanks
Ready to Specify the Right Underground Tank?
Let Tank Depot’s experts help you customize, specify, and deploy the ideal underground fiberglass tank for your project. Built to code. Built to last.
Ready to Specify the Right Underground Tank?
Let Tank Depot’s experts help you customize, specify, and deploy the ideal underground fiberglass tank for your project. Built to last.
