Wastewater Systems

Northwestern Supply has partnered with Roth Global Plastics and their Roth MultiTank is the first tank of its kind. It can be used for water cistern, pump, holding, rainwater or septic tank. This is possible due to its special construction of an inner layer of FDA approved virgin HDPE, two inside layers of PE for improved stability, plus one outer layer of black and UV-stabilized PE.

Not only is it special in terms of its construction, it also has the best warranty the industry has to offer: lifetime corrosion protection and 5 years of labor insurance coverage (see warranty for more details).

LARGEST BLOW-MOLDED PRODUCT IN THE WORLD

Roth’s blow-molding machine utilizes a four-layer extrusion head that allows us to line the wetted surface of the tank with an NSF-61 listed resin so all Roth tanks (except our 300 G) can be used for potable water storage in addition to being used for onsite wastewater. This multi-purpose feature allows our distributors the benefit of stocking only one tank.

NOT ALL TANKS ARE CREATED EQUAL

Roth Multi-purpose tanks are made by a state-of-the-art computer controlled multi-layer blow molding process produces perfect parts. Repeatable process, repeatable field performance you can trust. Our tanks are manufactured by a unique and proprietary blow-molding process resulting in the most structurally sound polyethylene tank on the market.  After decades of conventional technology, Roth brings 40 years of blow molding experience to the North American market. In fact, 1 out of every 2 tanks in Europe is of blow-molded construction.