OneSource Plastics' Septic catalog covers the full product range from the major US manufacturers. Search by SKU, brand, or capacity below. Bulk-pricing and consolidated-freight quotes available via 866-418-1777.
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
Rotomolded polyethylene tanks in this category are typically manufactured to ASTM D1998, and many use FDA 21 CFR 177.1520 compliant resin; certifications vary by model and manufacturer, so check each product's Specifications for what applies. 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.
A 2000 gallon multi-use underground tank for water or septic service
The Norwesco 2000 gallon multi-use underground liquid storage tank, part number 44593, is a white polyethylene tank built to be...
The Chem-Tainer 1000 Gallon One Compartment Septic Tank is a single-chamber polyethylene septic tank measuring 96 inches long, 58 inches wide, and 62 inches tall. All 1,000 gallons sit in one...
A 2500 gallon low profile underground tank for septic or water storage
The Norwesco 2500 gallon multi-use underground liquid storage tank, part number 44079, is a white polyethylene tank 159 inches...
A 2600 gallon low profile underground tank for a shallow bury
The Norwesco 2600 gallon multi-use underground tank, part number 43770, is a one piece polyethylene tank built to be buried where you...
A 2650 gallon underground tank for septic or water storage
The Norwesco 2650 gallon multi-use underground liquid storage tank, part number 43771, is a white polyethylene tank 155 inches long, 99...
A 3525 gallon low profile underground tank for septic or water storage
The Norwesco 3525 gallon multi-use underground liquid storage tank, part number 44390, is a white polyethylene tank 211 inches...
A 5025 gallon underground cistern for water you want out of sight
The Norwesco 5025 gallon underground water storage cistern, part number 44876, is a white polyethylene tank 211 inches long, 102...
A 5025 gallon underground cistern with the riser already on it
The Norwesco 5025 gallon underground water storage cistern with riser, part number 44877, is a white polyethylene tank 211 inches long,...
A 10000 gallon underground polyethylene tank for water, rainwater or septic service
The Norwesco 10000 gallon multi-use underground tank, part number 45686, is a one piece polyethylene tank built to...
A 15000 gallon underground polyethylene tank for cisterns, rainwater and septic service
The Norwesco 15000 gallon underground liquid storage tank, part number 41615, is a one piece polyethylene tank...
A 20000 gallon underground polyethylene tank, the largest in Norwesco's buried line
The Norwesco 20000 gallon underground liquid storage tank, part number 41616, is a one piece polyethylene tank...