Polywest is Canada's foremost supplier of name brand liquid handling products.
Norwesco Polyethylene Underground Tanks
Why Poly?
The world’s leading manufacturer of polyethylene tanks, NORWESCO has been producing polyethylene septic tanks since 1980. With that kind of experience, NORWESCO offers you proven products that you can count on for years of dependable, trouble-free service. NORWESCO septic tanks are backed by a full three-year warranty and have been approved by state and local health departments from coast to coast. Where applicable, NORWESCO septic tanks have been approved by both IAPMO™ and CSA™.
Please consider the following features when you are looking to purchase a septic tank and you’ll find that NORWESCO tanks will exceed your expectations when it comes to performance and longevity.
Ease of Installation
For septic system replacement and new home construction, NORWESCO’s polyethylene septic tanks are designed for durability and quick, easy installation. Any NORWESCO septic tank can be transported to the job site in a pickup truck and carried by just two people. This enables you to install the tank on your schedule.
Rotationally Molded, One-Piece Construction
NORWESCO septic tanks are manufactured by means of the rotational molding process which produces a one-piece, seamless, watertight tank.
Superior Strength Design
The rib design and rib placement provide superior structural integrity to the tank.
Excellent Chemical Resistance
Polyethylene is unaffected by soil chemicals and by the chemicals and gases present in sewage, so NORWESCO septic tanks will not rust or corrode and require no additional coatings as other tanks do. NORWESCO’s strict quality guidelines ensure an environmentally safe septic tank.
Single or Double Compartment
NORWESCO’s 750, 1000, 1250 and 1500 gallon tanks are available as single compartment or double compartment tanks (2/3 – 1/3). Prior to installing any septic tank, you should check with your local health department for specific requirements that your county or province may enforce.
Pre-Plumbed / Ready for Installation
NORWESCO septic tanks (750 gallons and larger) are shipped to you ready for installation. The pre-plumbed tanks include tee assemblies installed at the inlet and outlet. Tees are sized/cut according to each state code so the tank that you receive will be ready for installation.
Watertight Lid
NORWESCO septic tanks come outfitted with a domed lid. This improved design is significantly stronger than other lid designs. When leaving the factory, the lid is attached to the tank with stainless steel screws and comes standard with a foamed, polyethylene gasket between the lid and the tank. The gasket provides a watertight seal at the lid area.
Below Ground Tank Models
Low Profile Below Ground Tanks
Our below ground cistern and holding tanks feature the same rugged design found in our above ground tanks and are light weight for ease of transportation and installation. Our polyethylene below ground tanks use FDA approved resins for use in potable drinking water applications. All of our below ground tanks should be kept 1/4 full after installation.
These tanks are available in 300, 500, 1150 and 1700 gallon sizes. Contact us for more information.
Low Profile Above Ground Tanks
The 300 to 2000 Imperial gallon low profile tanks are ideal for storage in areas where height is an important consideration. The low profile tanks are designed to fit under a cottage or deck and feature deep ribs for extra strength. This line of tanks may be used for both black water and potable drinking water.
These tanks are available in 180, 300, 500, 525, 1000, 1075, 1150, 1325, 1700 and 2000 gallon sizes. Contact us for more information.
Bruiser Septic Tanks
The BRUISER may be used as a septic or holding tank, a pump chamber or a potable water tank and displays the same features as our standard septic tanks. BRUISER tanks should be filled 1/4 full prior to backfilling. No special backfill is required, native soil may be used provide it is devoid of any large obstructions such as tree roots as well as clay.
Bruisers come in 830, 1040 and 1250 gallon sizes. Contact us for more information.
Below Ground Sewage and Water Tanks
Rated for use as both a holding tank for black water and a cistern for potable drinking water, these tanks have a more upright design for a reduced foot print. Both models come with one man-way pre-installed for ease of installation. All of our below ground tanks should be kept 1/4 full after installation.
These below ground tanks are available in 1000 and 1400 gallon sizes. Contact us for more information.
Below Ground Septic Tanks
These two compartment septic tanks are designed with a small footprint for easy site location. The two compartment design is rated for trickle applications only. When installing this line of tanks they must be kept full of water as you backfill and should remain full during operation at all times.
The NORWESCO two compartment septic tanks are available in 830, 1040 and 1250 gallon sizes. Contact us for more information.
Spherical Pump Chamber
Our 270 Imperial gallon sphere is designed to be used as a holding tank or a pump chamber. Unlike our ribbed septic and holding tanks, these tanks may remain empty while in the ground. Each tank comes with a manhole cover and includes a molded-in elevated pump stand on the bottom of the tank.
