Below Ground Septic Tanks

Manufactured from linear polyethylene in one piece, seamless construction, this tank series is designed for both septic system replacement and new home construction. Our polyethylene septic tanks are unaffected by soil chemicals or by the chemicals and gases present in sewage.

ST/SC SERIES

  • Will not rust or corrode.
  • Designed for durability and quick, easy installation.
  • Manhole extension, sanitary tees, neoprene pipe gaskets and risers are available.
  • Click here for below ground septic tank installation procedures.


Click here for info on How to Select and Order Tanks

SINGLE COMPARTMENT

 

300 gallon Below Ground Septic and Water Tank Design

 CAPACITY
(GAL)
 SIZE
L x W x H (IN.)
 HEIGHT
TO INLET
HEIGHT
TO OUTLET
 LIQUID
LEVEL
 MANHOLE
DIAMETER
 ST
TANK
PART #
300 54" Dx 51" 45" 43" 41" 1-20" TN5451ST
500 101" x 51" x 42" 36" 33" 31" 1-20" TN500XST
750 100" x 52" x 58" 52" 48" 46" 1-20" TN750XST
1000 102" x 60" x 58" 51" 46" 48" 2-20" TN1000ST
1250 116" x 55" x 68" 62" 54" 54" 2-20" TN1250ST
1500 143" x 55" x 66" 57" 54" 54" 2-20" TN1500ST

1000 gallon through 1500 gallon septic tanks are available in two compartment configurations. Contact sales department for more details regarding the compartment configurations and your state or IAPMO compliance requirements.

SEPTIC TANK PLUMBING KITS PART #
500 - 750 gallon Below Ground Single Manhole Septic and Water Tank Design
Service Weight Sanitary Tees & Gasket Kit (2 ea.) TN1001PK
Schedule 40 Sanitary Tees & Gasket Kit (2 ea.) TN1002PK
Service Weight Tee & Gasket (1 ea.) and Schedule 40 Tee & Gasket (2 ea.) TN1003PK
Service Weight or Schedule 40 Gasket Kit (2 ea.) TN1004PK

SEPTIC & WATER TANK ACCESSORIES PART #
Manhole extension (15" H x 20" D) TN1001TA
Lid & Riser combination (20" lid w/8" riser pipe) TN1002TA
Manhole extension (12" H x 24" D) TN1003TA
Lid & Riser combination (24" lid w/8" riser pipe) TN1004TA
24" Septic and water tank lid TN24XXTL
20" Septic and water tank lid TN20XXTL

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