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Plastic Septic Tanks in Shawnee, OK

These are the Norwesco plastic septic tanks molded at Norwesco's Shawnee, OK plant in sizes from 200 to 2,500 gallons. When Shawnee is the Norwesco plant closest to you, every tank page quotes LTL freight from Shawnee to your ZIP.

Septic tanks, pump tanks and related parts for below-ground use. See every size from every plant in Norwesco Plastic Septic tanks, or everything made in Shawnee in Norwesco Tanks in Shawnee, OK.

Before you order

  • Know your liquid. Standard tanks are rated to 1.5 specific gravity (12.52 lbs per gallon). Heavy duty tanks are rated to 1.9 (15.87 lbs per gallon).
  • Above or below ground. Underground and septic tanks are made to be buried; above-ground tanks are not.
  • Accessories ship with the tank. Bands, saddles and stands ship from the same plant as the tank.
  • Questions? Call 866-418-1777.
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