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Fiberglass Septic Tanks

General Information:

  • Sizes range from 750 gallon to 10,000 gallon
  • Loomis and Orenco tanks have IAPMO Certification
  • Non-corrosive for long life
  • Lightweight for easy installation
  • Two piece tanks can be shipped unassembled and nested together for economical shipping

Click on a pdf logo below for a PDF drawing. Get free Adobe Reader here.
Tank dimensions and fitting placement may vary slightly. Specifications are subject to change without notice.


Loomis Fiberglass Septic Tanks
Part Number Type Capacity Weight Inlet Outlet L X W X H Comp PDF
LTPLST75 Ribbed 750 gallon 320 lbs 54" 52" 93.5" x 71.5" x 67" 2
LTPLST10 Ribbed 1000 gallon 370 lbs 54" 52" 115" x 72.5" x 67" 2
LTPLST12 Ribbed 1250 gallon 430 lbs 54" 52" 142" x 75" x 68" 2
LTPLST15 Ribbed 1500 gallon 470 lbs 54" 52" 161" x 75" x 68" 2
*Inlet and outlet are from bottom of tank to bottom of hole

Loomis Fiberglass (install | operation | warranty | IAPMO listing)

Available Accessories Loomis Fiberglass Septic Tanks

  • Extra Fiberglass Lids
  • Fiberglass Risers (24" Diameter x 24" Height)
  • Septic Tank Effluent Filters
  • 4-Hole or 6-Hole Distribution Boxes
  • Diverter valves
  • Other accessories for fiberglass on site tanks


Glas-Tec Fiberglass Septic Tanks
Part Number Type Capacity Inlet Outlet L X W X H Comp PDF
LGT1050SEP Horizontal 1050 gallon 55" 52.5" 111" x 67" x 67" 2 -
LGT1250SEP Horizontal 1250 gallon 55" 52.5" 131" x 67" x 67" 2 -
LGT1550SEP Horizontal 1550 gallon 55" 52.5" 161" x 67" x 67" 2 -
*Inlet and outlet are from bottom of tank to bottom of hole

Glas-Tec

Glas-Tec septic tanks are approved by and distributed within the state of Arizona. These fiberglass septic tanks are available in standard sizes along with custom larger sizes. Please call for custom quotes.

Available Accessories

  • Extra Fiberglass Lids Orenco Systems Fiberglass Septic Tanks
  • Fiberglass risers
  • Septic Tank Effluent Filters
  • 4-Hole or 6-Hole Distribution Boxes
  • Diverter valves
  • Other accessories for fiberglass on site tanks

Orenco Systems Fiberglass Septic Tanks
Part Number Type Capacity Weight Inlet Outlet L X W X H Comp PDF
LOSTU1000 Ribbed 1000 gallon 350 lbs 54" 52" 121" x 72" x 65" 2
LOSTU1500 Ribbed 1500 gallon 500 lbs 54" 52" 168" x 72" x 65" 2
*Inlet and outlet are from bottom of tank to bottom of hole

Orenco Systems (install | warranty | IAPMO listing)

Orenco's septic tanks are known in the onsite industry for strength and watertightness. These injection-molded fiberglass-reinforced polyester (FRP) tanks are available in 1000-gal and 1500-gal sizes for residential, commercial, and community systems. These tanks can be buried up to 4' deep.

Available Accessories

  • Fiberglass Lids
  • Ultra Rib Riser Pipe
  • Riser Lid Adapters
  • Inlet/Outlet Plumbing
  • Epoxy and Adhesive Kits
  • Septic Tank Effluent Filters