The Plastic Septic Tanks catalog at OneSource Plastics includes every active manufacturer SKU across Norwesco, Snyder Industries, Chem-Tainer, Enduraplas, and Bushman — rotomolded polyethylene tanks. Certifications such as ASTM D1998 construction and FDA 21 CFR 177.1520 food-contact resin compliance vary by model and manufacturer, so check each product's Specifications for what applies to that tank. Use the sort and filter controls below to narrow by capacity, brand, or dimensions.
Applications
Residential and small-commercial septic systems (single- and dual-compartment)
Low-profile installation under driveways or high water tables (10"-18" cover)
Holding-tank applications where municipal sewer is unavailable
Aerobic treatment systems (ATU) and pump chambers
Compliance & Standards
All polyethylene tanks in this category are rotomolded from FDA 21 CFR 177.1520 compliant resin and manufactured to ASTM D1998 specification for upright polyethylene storage. UV stabilizers are co-extruded into the resin for outdoor installation. Maximum operating temperature 120°F for HDPE; higher for XLPE (cross-linked polyethylene). NSF 61 certified models available on request for potable drinking water applications — call to specify.
Freight & Delivery
Tanks ship LTL motor freight from the closest stocking warehouse to your delivery ZIP. Typical transit 5-10 business days. Liftgate available at delivery (per-shipment fee). Always inspect at delivery and note any damage on the bill of lading before signing — that is the LTL carrier claim trigger. Bulk-order consolidation reduces per-tank freight 25-40%. Same-business-day quotes: call 866-418-1777 with MPN, quantity, and delivery ZIP.
Sizing & Selection
Pick capacity first, then verify dimensions against your installation footprint. Most rotomolded tanks are built to OEM standard dimensions ± standard rotational-molding tolerance of ±2-3%. Vertical tanks need flat-pad foundation; horizontal/leg tanks need stand or cradle (check listing — some are sold with integrated stand, others require separate stand or band purchase). Application engineering: call 866-418-1777 for sizing, layout, and accessory recommendations.
Three hundred gallons sixteen inches high behind the job shack
The Norwesco N-44234 is a 300 gallon above ground holding tank in a shell the sheet gives as 95 inches long, 56 inches wide and 16...
The Norwesco 300 Gallon Above Ground Septic Holding Tank (SKU N-44234-CA) is a low-profile black polyethylene holding tank built for above-ground septic and wastewater containment. At just 16 inches...
The Norwesco 200 Gallon Above Ground Holding Tank (SKU N-45339-CA) is a low-profile black polyethylene tank built for job-shack water storage where overhead clearance is tight. At 20 inches tall on a...
The Norwesco 300 Gallon Septic Pump Tank (SKU N-41319) is a black, polyethylene basin built for the dose-and-discharge stage of a septic system, where effluent collects until a pump lifts it to a...
Three hundred gallons of grey pump tank, 48.5 inches square
The Snyder 5260000W94201 is a 300 gallon septic pump tank in grey polyethylene, listed 48.5 inches long, 48.5 inches wide and 53 inches...
The Norwesco Florida Only 525 Gallon Plastic Septic Pump Tank is a green polyethylene pump tank configured for Florida septic systems, where a dedicated pump chamber moves effluent from the treatment...
Three hundred gallons of septic pump tank, preplumbed as the name says
The Snyder SII-5260000W94202 is a 300 gallon septic pump tank in black polyethylene, listed 48.5 inches across and 53 inches...
The store name carries the states this one is sold for: "Norwesco 1000 Gallon Two Compartment Septic Tank with Loose Plumbing and Low Profile Design - IAPMO Certified - For SC/NC"
That is how the...
The Norwesco 500 Gallon Plastic Septic Pump Tank is a black polyethylene chamber built to hold and discharge effluent in a pumped septic system - the dosing or pump chamber that lifts wastewater to a...
The Norwesco 500 gallon single-compartment septic tank (SKU N-41320) is an IAPMO-certified polyethylene tank for residential and light-commercial septic systems that need a code-listed wastewater...
Five hundred gallons of septic pump tank, 60 inches across
The Snyder SII-PT2S is a 500 gallon septic pump tank in black polyethylene, carrying the manufacturer part number 5170000W94201 and listed...
The Norwesco 525 Gallon Plastic Septic Pump Tank (SKU N-44831) is a black polyethylene tank built to hold and dose effluent in a pumped septic system. It measures 62 inches tall on a 64 x 64 inch...