Polyethylene (Plastic) Septic Tanks
General Information:
- Poly septic tanks are available in ribbed and low profile models
- Models available from 300 - 1500 gallons
- Low profile septic tank design perfect for more challenging installs
- Seamless one piece septic tank design
- Non-corrosive for long life
- Lightweight for easy installation
- IAPMO and CSA compliant
- Great overall value
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Tank dimensions and fitting placement may vary slightly. Specifications are subject to change without notice.
Snyder NuConSept (full brochure | warranty | site selection | IAPMO listing) 
| Standard Use Ribbed Septic Tanks | ||||||||
| Part Number | Type | Capacity | Weight | Inlet * | Outlet * | L X W X H | Comp | |
|---|---|---|---|---|---|---|---|---|
| LSIST11S | Sphere | 300 gallon | 125 lbs | 39" | 36" | 49" x 49" x 50" | 1 | |
| LSIST21S | Sphere | 500 gallon | 215 lbs | 45.5" | 42.5" | 60" x 60" x 60" | 1 | |
| LSIST21L | Low Pro | 500 gallon | 190 lbs | 35" | 32" | 88" x 48" x 42" | 1 | |
| LSIST52R | Ribbed | 1050 gallon | 335 lbs | 51" | 48" | 100" x 64" x 62" | 2 | |
| LSIST62R | Ribbed | 1250 gallon | 390 lbs | 51" | 48" | 119" x 64" x 62" | 2 | |
| LSIST72R | Ribbed | 1500 gallon | 470 lbs | 51" | 48" | 140" x 64" x 62" | 2 | |
Ribbed "NuConcept" model (brochure | ribbed install | sphere install)
These poly septic tanks are pre-plumbed with 4" SCH-40 inlet and outlet, sanitary tees, gaskets, and manhole covers. With the exception of the 300-gallon and 500-gallon sphere tanks,
ABOVE SEPTIC TANKS ARE NOT TO BE USED AS PUMP TANKS OR HOLDING TANKS WITH PUMPS IN THEM.
| Heavy Duty "Dominator" Low-Profile Septic Tanks | ||||||||
| Part Number | Type | Capacity | Weight | Inlet * | Outlet * | L X W X H | Comp | |
|---|---|---|---|---|---|---|---|---|
| LSIST32DP | Low Pro | 750 gallon | 385 lbs | 45" | 42" | 96" x 60" x 51" | 2 |  |
| LSIST52DP | Low Pro | 1000 gallon | 465 lbs | 45" | 42" | 126" x 60" x 51" | 2 | |
| LSIST62DP | Low Pro | 1250 gallon | 525 lbs | 45" | 42" | 161" x 60" x 51" | 2 | |
| LSIST72DP | Low Pro | 1500 gallon | 685 lbs | 45" | 42" | 191" x 60" x 51" | 2 | |
Heavy Duty "Dominator" tank ( brochure | low-pro install | pump version install )
These poly septic tanks are pre-plumbed with 4" SCH-40 inlet and outlet, sanitary tees, gaskets, and manhole covers. These low-profile poly septic tanks have a unique heavy-duty design, for those tougher installations. Top male ribs provide added strength against top loading. New bottom male ribs counteract high hydrostatic forces. Radial Reinforcement Bands and tie tubes provide superior radial strength.
These tanks can be installed without water and can be backfilled with native free-flowing soil. All models of the Dominator low-profile poly septic tanks can be used as holding/pump tanks. Can withstand up to 3 feet of cover.
Available Accessories
- Schedule 40 PVC Inlet Tee Assembly
- Schedule 40 PVC Outlet Tee Assembly
- Tamper-Resistant Bolt Kit (4 bolts, 1 driver bit)
- Extra Poly Lids
- 24" Diameter Manhole Extensions (6", 12", 18" Heights)
- 24" Poly Lid with 6" Inspection Port
- 24" Poly Lid/Riser Combo with 12" Diameter x 30" Height Riser
- Septic Tank Effluent Filters
- 4-Hole or 6-Hole Distribution Boxes
- Diverter valves
- Other accessories for complete septic systems
