(888) 686-8265 Lowest Prices Best Shipping Rates

500 Gallon Norwesco Septic Pump Tank

underground septic tank, waste tank, sewage tank, spherical septic tank
500 Gallon Norwesco Septic Pump Tank
Images may be inaccurate. See specs table below to ensure accuracy.
Quick Summary
Part# MPN: 40785 / Store ID: X7533867
Dimensions 64" Length x 64" Width x 67" Height
Liquid Access 1 Manway / Lid
Weight / Ship Class 174 lbs. / Ship Class 300
Ships From CA, MN, NY, OH, OK, UT, WA
Drawing Norwesco 40785 Drawing
Molded-in elevated pump stand
Pump Tank can remain in ground while empty
20" lid for easy of access
Designed for durablity and quick, easy installation
Municipal and County code may vary from your state approval. Please make sure you consult with your local sanitation department or plumber on requirements.

Regular Price: $1,428.99

Special Price $1,020.99

29% Off MSRP Guaranteed for 37 hours only
  • 12027
  • 12027
  • 12027
  • 12027
  • 12027

Special Price $1,020.99



Norwesco 500 Gallon Septic Tank, part# 40785 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 500 gallon septic pump 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 500 gallon septic pump tank features one 20" gasketed manway. Installation requires no backfill.

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.
Show More

Size Comparison

image of man
At Scale

Additional Information

Store ID X7533867
Manufacturer Info
Product Part # 40785
Manufacturer Norwesco
Manufacturer Warranty 3 Year Warranty
Technical Drawing Norwesco 40785 Drawing
Documents Norwesco Septic FAQ
Installation Instructions Norwesco Septic Installation Instructions
Size Info
Capacity (Gallons) 500
Dimensions 64" Length x 64" Width x 67" Height
Weight (lbs) 174
Liquid Accessibility
Liquid Access 1 Manway / Lid
Manway / Lid 1 20" Gasketed Manway
Resin Features
Color Black
Material Polyethylene
Max Temp Allowed 130° F / 54° C
Physical Features
Product Type Pump Tank
Environment Underground
Preplumbed No
Compartments 1
ANSI / NSF 61 Approved Resin Yes
NSF Sticker Availability California, Minnesota, Ohio, Washington
Shipping Info
Shipping Locations California, Minnesota, New York, Ohio, Oklahoma, Utah, Washington
Shipping Zip Codes 13827, 43130, 55375, 74801, 84074, 93230, 98671
Ship Freight Class 300
Liftgate Option No
live chat
find tank