Low-profile septic tanks from Norwesco have molded-in support columns in the middle of the tank that are filled with flowable soil before backfilling to maximize strength, stabilize the tank during backfill, and reduce buoyancy. Molded-in tie-down and lifting lugs on the corners are designed for easy handling and moving. The inlet and outlet holes are predrilled. Gaskets and field-adjustable sanitary tees that can accept SDR 35 or Schedule 40 pipe are included. The one-piece tanks don’t require certified assemblers. Dual-wall pipe, PVC ribbed pipe or Norwesco’s safety lid/riser combination can be used for a riser. 800/328-3420; www.norwesco.com.
 
 


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