Norwesco 43746 — Complete Reference
The Norwesco 43746 is a 250 Gallons underground water cistern in white, molded from polyethylene. Cistern-style underground water storage tank. Requires sand or pea-gravel bedding and a deadman or concrete ballast when installed below the local water table.
This page is the complete reference for the 43746: specs, compatible accessories, installation, freight, and warranty. Every number is sourced from the Norwesco 2024 Liquid Storage Catalog.
At-a-Glance
| Manufacturer Part Number | 43746 |
| Brand | Norwesco |
| Product Class | Underground Water Cistern |
| Capacity | 250 Gallons |
| Material | Polyethylene |
| Color | White |
| Diameter | 47" |
| Overall Height | 56" |
| Lid / Manway | 20" |
| Specific Gravity Rating | 1.9 |
| Shipping Weight | 79 lb |
| Certifications | iapmo-certificate-2024-2029, csa-certificate, fda-resin-status-letter-2020 |
| Warranty | 3-year limited full-replacement |
| Freight Class | LTL, NMFC 156600-02 |
Physical Profile
Single-piece rotomolded construction. The tank has 1 reinforcing rib at approximately 14.4" from the base (per engineering drawing). Wall thickness is specified by the manufacturer in the engineering drawing linked above.
Typical Applications
- Rural potable water cistern
- Fire-suppression reserve
- Rainwater harvesting buried below frost line
Installation Checklist
- Backfill with pea gravel or coarse sand only — no native soil with rocks larger than 1 inch
- Fill the tank with water as you backfill to balance earth pressure
- Anchor with deadmen or a concrete ballast slab if your water table rises above the tank midline
- Bury to the depth specified in the tech drawing — do not bury deeper than rated
Shipping & Freight
Ships LTL on a pallet. Residential deliveries need liftgate service. Call with your ZIP for exact freight.
Warranty & Certifications
3-year limited full-replacement. Keep your One Source Plastics order confirmation — it's the warranty-claim trigger. Certifications on file: iapmo-certificate-2024-2029, csa-certificate, fda-resin-status-letter-2020.
When This Product Is the Wrong Choice
- Storing petroleum or solvents — HDPE permeation is too high for diesel, motor oil, or hydrocarbons
Cross-Reference
| Supplier | Their SKU |
|---|---|
| One Source Plastics | N-43746 |
| Norwesco | 43746 |
FAQ
Is the Norwesco 43746 in stock?
Stock is split across manufacturer warehouses. We pull current inventory when you add to cart; if regional stock is short you'll see a ship-date estimate before checkout.
How fast does the 43746 ship?
In-stock units typically ship within 3 business days of order confirmation. Out-of-stock units build on a 2-6 week cycle depending on the manufacturer. Call 866-418-1777 for a firm date.
Does the 43746 include fittings?
The base tank ships with the manufacturer's standard fitting package. Upgraded bulkheads, flex connectors, or threaded outlets are separate line items — our team confirms fitment before shipping.
What warranty applies to this tank?
3-year limited full-replacement. Keep your order confirmation — it's the claim trigger.
Can I download the technical drawing?
Yes. The branded View Technical Drawing button above your purchase links to the manufacturer's engineering PDF. Also appears in the Additional Information tab.
Questions about fitment, freight, or chemistry?
Our team has the Norwesco catalog in front of them. Call 866-418-1777 or request a quote with MPN 43746 ready.
Sources: Norwesco 2024 Liquid Storage Catalog. Specs verified against manufacturer-issued engineering drawings. Price and freight subject to change — see current listing above.
