Fiberglass Underground Rainwater Harvesting Storage Tank

Rainwater harvesting (RWH) captures, diverts and stores rainwater for later use.


Flowtite® fiberglass storage tanks are ideal for use in rainwater harvesting applications. Natural rainwater is very clean and therefore needs little filtering to be used as a secondary water supply. Rainwater harvesting is an innovative approach anyone can use. With proper planning and design, your system can be built to capture up to 100% of the surface area rainwater. Rainwater harvesting can make a dramatic impact through financial tax incentives, compliance with current and future regulations and additional credits toward certification of “green” building. Newer applications include recharging cooling tower water supplies for evaporative cooling systems.

Tank sizes and accessories can be customized to meet both residential and commercial design plans.

Typical applications

  • Commercial rainwater harvesting
  • Residential rainwater harvesting
  • Gray water reuse
  • Irrigation systems

Typical Rainwater Harvesting System


Illustration of an rainwater harvesting tank with a cut away and alphabetical call outs.

Standard Features

  1. Flowtite® Fiberglass Tank 600 - 60,000 gallons
  2. Fiberglass Access Collar 24", 30", 36", 48"
  3. Watertight Fiberglass Riser
  4. Deadmen Anchors
  5. Fiberglass Anchor Straps

Typical Accessories

  1. First Flush Filter
  2. Smoothing Inlet Diverter
  3. Pump Control Float Switch
  4. Floating Filter
  5. Suction Pump
  6. Overflow Device
  7. Roof Drain
  • Containment Solutions Capabilities Brochure

  • Containment Solutions Capabilities Brochure (Spanish)

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