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3525 Gallon Norwesco Holding Tank

3525 Gallon Norwesco Holding Tank
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Quick Summary
Part# MPN: 44390 / Store ID: X4512173
Dimensions 211" Length x 102" Width x 51" Height
Liquid Access 1 Manway / Lid
Weight / Ship Class 1304 lbs. / Ship Class 400
Ships From CA, MN, TX
Drawing Norwesco 44390 Drawing
Features 20" manhole for ease of access
Complies with FDA standards 21 CFR 177.1520 (1) 3.1 and 3.2
Integral columns provide excellent structural strength
Designed to accept up to 4" plumbing connections
Multi-use option for potable, non-potable, & septic applications

Regular Price: $12,522.99

Special Price $8,943.99

29% Off MSRP Guaranteed for 20 hours only



Norwesco 3,525 Gallon Septic Tank, part# 44390 is a 1 compartment septic tank. It's primarily used for the storage of wastewater. This plastic septic tank offers a lightweight low cost alternative to old-fashioned concrete septic tanks.

This 3525 gallon holding tank is constructed with rotationally molded polyethylene resin. It's seamless construction makes it durable and resistant to cracks, chips, and ruptures. The poly tank was made with FDA approved resin that complies with FDA standards 21 CFR 177.1520 (1) 3.1 and 3.2 for waste water storage.

The 3525 gallon holding tank is available with IAPMO Certification. It features . Installation requires a 25% internal backfill to equalize the pressure between the outside and the inside of the tank.

Norwesco backs their septic tanks with a 3 year manufacturer warranty. Additional riser options are available. These plastic septic tanks are available in sizes ranging from 200 to 3,525 gallons.

The National Tank Outlet is ready to help fulfill your liquid transportation needs. Contact our septic tank experts with your questions or customization requirements.
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Size Comparison

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Additional Information

Store ID X4512173
Manufacturer Info
Product Part # 44390
Manufacturer Norwesco
Manufacturer Warranty 3 Year Warranty
Technical Drawing Norwesco 44390 Drawing
Documents Norwesco Holding FAQ
Installation Instructions Low Profile Septic Installation Instructions
Size Info
Capacity (Gallons) 3525
Dimensions 211" Length x 102" Width x 51" Height
Weight (lbs) 1304
Liquid Accessibility
Liquid Access 1 Manway / Lid
Manway / Lid 1 20" Manway Cover
Resin Features
Color Natural White
Material Polyethylene
FDA Approved Resin Yes (Food Grade, Potable)
Max Temp Allowed 130° F / 54° C
Physical Features
Product Type Underground Holding Tank
Specific Gravity 1.9
Environment Underground
Backfill 25% Backfill Required
Preplumbed No
Compartments 1
ANSI / NSF 61 Approved Resin Yes
NSF Sticker Availability California, Minnesota, Texas
Shipping Info
Shipping Locations California, Minnesota, Texas
Shipping Zip Codes 55375, 75840, 93230
Ship Freight Class 400
Liftgate Option No
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