Underground Septic Tanks
Tank Mart plastic underground septic tanks are made from polyethylene plastic. Our underground septic tanks are a great alternative to underground concrete septic tanks because they last longer, easier to install, and substantially cut your overall underground septic tank costs. These underground poly septic tanks are designed for both commercial and residential applications. These tanks carry a full 3 year warranty and are perfect for any project requiring a underground septic tank. See our list below.
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| Name | Capacity | Length | Width | Height | Diameter | Part # | Price |
|---|---|---|---|---|---|---|---|
200 Gallon Septic Pump Tank | 43745 |
200 Gallons | 47'' | 47'' | 56'' | N/A | 43745 |
$641.87
|
300 Gallon Septic Pump Tank | 5260000W94201 |
300 Gallons | 48.5'' | 48.5'' | 53'' | N/A | 5260000W94201 |
$838.95
|
300 Gallon Septic Pump Tank | 5260000W94202 |
300 Gallons | 48.5'' | 48.5'' | 53'' | N/A | 5260000W94202 |
$1,018.95
|
300 Gallon Septic Pump Tank | 41319 |
300 Gallons | 54" | 54" | 54" | N/A | 41319 |
$769.87
|
500 Gallon Septic Pump Tank | TMST21S |
500 Gallons | 60'' | 60'' | 63'' | N/A | TMST21S |
$1,289.95
|
500 Gallon Low Profile Septic Tank | 41320 |
500 Gallons | 101'' | 51'' | 47'' | N/A | 41320 |
$1,156.87
|
500 Gallon Non-Plumbed Septic Tank | 43522 |
500 Gallons | 97'' | 48'' | 42'' | N/A | 43522 |
$1,047.87
|
500 Gallon Septic Pump Tank | 40785 |
500 Gallons | 64'' | 64'' | 67'' | N/A | 40785 |
$1,066.87
|
575 Gallon Low Profile Underground Water Tank | 44360 |
575 Gallons | 97'' | 48'' | 42'' | N/A | 44360 |
$1,394.95
|
750 Gallon Legacy Septic Tank | 44490 |
750 Gallons | 96'' | 48'' | 63'' | N/A | 44490 |
$1,785.87
|
750 Gallon Legacy Septic Tank | 44489 |
750 Gallons | 96'' | 52'' | 62'' | N/A | 44489 |
$1,767.87
|
1000 Gallon Legacy Septic Tank | 44465 |
1000 Gallons | 102'' | 60'' | 63'' | N/A | 44465 |
$2,207.87
|
1000 Gallon Legacy Septic Tank | 44475 |
1000 Gallons | 102'' | 60'' | 63'' | N/A | 44475 |
$1,841.87
|
1000 Gallon Legacy Septic Tank | 44464 |
1000 Gallons | 102'' | 60'' | 63'' | N/A | 44464 |
$2,207.87
|
1000 Gallon Legacy Septic Tank | 44474 |
1000 Gallons | 102'' | 60'' | 63'' | N/A | 44474 |
$1,841.87
|
1000 Gallon Legacy Septic Tank | 44463 |
1000 Gallons | 102'' | 60'' | 63'' | N/A | 44463 |
$2,023.87
|
1000 Gallon Legacy Septic Tank | 44473 |
1000 Gallons | 102'' | 60'' | 63'' | N/A | 44473 |
$1,802.87
|
1000 Gallon Legacy Septic Tank | 44472 |
1000 Gallons | 101'' | 52'' | 71'' | N/A | 44472 |
$1,747.87
|
1175 Gallon Low Profile Underground Water Tank | 44405 |
1175 Gallons | 127'' | 60'' | 51'' | N/A | 44405 |
$2,124.95
|
1250 Gallon Legacy Septic Tank | 44468 |
1250 Gallons | 116'' | 55'' | 70'' | N/A | 44468 |
$2,611.95
|
1250 Gallon Legacy Septic Tank | 44478 |
1250 Gallons | 116'' | 55'' | 70'' | N/A | 44478 |
$2,207.87
|
1250 Gallon Legacy Septic Tank | 44467 |
1250 Gallons | 116'' | 55'' | 70'' | N/A | 44467 |
$2,577.87
|
1250 Gallon Legacy Septic Tank | 44477 |
1250 Gallons | 116'' | 55'' | 70'' | N/A | 44477 |
$2,207.87
|
1250 Gallon Legacy Septic Tank | 44466 |
1250 Gallons | 116'' | 55'' | 70'' | N/A | 44466 |
$2,577.87
|
1250 Gallon Legacy Septic Tank | 44476 |
1250 Gallons | 116'' | 55'' | 70'' | N/A | 44476 |
$2,023.87
|
1425 Gallon Low Profile Underground Water Tank | 44406 |
1425 Gallons | 157'' | 60'' | 51'' | N/A | 44406 |
$2,642.95
|
1450 Gallon Low Profile Underground Water Tank | 43549 |
1450 Gallons | 157'' | 60'' | 51'' | N/A | 43549 |
$2,642.95
|
1500 Gallon Legacy Septic Tank | 44481 |
1500 Gallons | 135'' | 55'' | 70'' | N/A | 44481 |
$2,768.95
|
1500 Gallon Legacy Septic Tank | 44480 |
1500 Gallons | 135'' | 55'' | 70'' | N/A | 44480 |
$2,739.95
|
1500 Gallon Legacy Septic Tank | 44469 |
1500 Gallons | 135'' | 55'' | 70'' | N/A | 44469 |
$2,958.95
|
1500 Gallon Legacy Septic Tank | 44479 |
1500 Gallons | 135'' | 55'' | 70'' | N/A | 44479 |
$2,557.95
|
-
200 Gallon Septic Pump Tank | 43745
Norwesco
$641.87 - $770.86Technical Drawing Tanks Installation Instructions Norwesco Septic FAQ Tank Summary Part# MPN: 43745 Dimensions 47" Length x 47" Width x 56" Height Liquid Access 1 Manway / Lid Weight / Ship Class 79 lbs. / Ship Class 300 Ship...$641.87 - $770.86 -
300 Gallon Septic Pump Tank | 5260000W94201
Snyder
$838.95TANK SUMMARY PART# 5260000W94201/TMPT1FL DIMENSIONS 48.5"L x 48.5"W x 53"H WEIGHT / SHIP CLASS 130 lbs. / Ship Class 300 CAPACITY 300 SHIPS FROM WV, NE MANUFACTURER INFORMATION TECHNICAL DRAWING Snyder...$838.95 -
300 Gallon Septic Pump Tank | 5260000W94202
Snyder
$1,018.95TANK SUMMARY PART# 5260000W94202/TMST11S DIMENSIONS 48.5"L x 48.5"W x 53"H WEIGHT / SHIP CLASS 113 lbs. / Ship Class 300 CAPACITY 300 SHIPS FROM AR, CA, NE, WV MANUFACTURER INFORMATION TECHNICAL DRAWING Snyder...$1,018.95 -
300 Gallon Septic Pump Tank | 41319
Norwesco
$769.87 - $899.86Technical Drawing Tank Summary Part# MPN: 41319 Dimensions 54" Length x 54" Width x 54" Height Liquid Access 1 Manway / Lid Weight / Ship Class 119 lbs. / Ship Class 300 Ship From CA, GA, MN, MS, NY, OH, OK, UT, WA ...$769.87 - $899.86 -
500 Gallon Septic Pump Tank | TMST21S
Snyder
$1,289.95TANK SUMMARY PART# TMST21S DIMENSIONS 60"L x 60"W x 63"H WEIGHT / SHIP CLASS 182 lbs. / Ship Class 300 CAPACITY 500 SHIPS FROM AR, CA, NE, WV MANUFACTURER INFORMATION TECHNICAL DRAWING Snyder ST21S Drawing ...$1,289.95 -
500 Gallon Low Profile Septic Tank | 41320
Norwesco
$1,156.87 - $1,285.86Technical Drawing Tank Summary Part# MPN: 41320 Dimensions 101" Length x 51" Width x 47" Height Liquid Access 1 Manway / Lid Weight / Ship Class 169 lbs. / Ship Class 300 Ship From GA, MN, MS, UT, WA Tank Information Manway /...$1,156.87 - $1,285.86 -
500 Gallon Non-Plumbed Septic Tank | 43522
Norwesco
$1,047.87Technical Drawing Installation Instructions Counter Bouyancy Instructions Tank Summary Part# MPN: 43522 Dimensions 97" Length x 48" Width x 42" Height Liquid Access 1 Manway / Lid Weight / Ship Class 179 lbs. / Ship Class 300 Ship From...$1,047.87 -
500 Gallon Septic Pump Tank | 40785
Norwesco
$1,066.87 - $1,226.86Technical Drawing Tank Summary Part# MPN: 40785 Dimensions 64" Length x 64" Width x 67" Height Liquid Access 1 Manway / Lid Weight / Ship Class 174 lbs. / Ship Class 300 Ship From CA, MN, OH, OK, WA Tank Information Manway /...$1,066.87 - $1,226.86 -
575 Gallon Low Profile Underground Water Tank | 44360
Norwesco
$1,394.95Technical Drawing Quick Summary Part# MPN: 44360 Dimensions 97" Length x 48" Width x 42" Height Liquid Access 1 Manway / Lid Weight / Ship Class 204 lbs. / Ship Class 300 Ships From OH, OK Fittings Access 1 Manway / Lid Manway/ Lid 20"...$1,394.95 -
750 Gallon Legacy Septic Tank | 44490
Norwesco
$1,785.87 - $1,914.86Technical Drawing TANK SUMMARY PART# #44490 DIMENSIONS 96" Length x 48" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 245 lbs. / Ship Class 300 CAPACITY (GALLONS) 750 SHIPS FROM ...$1,785.87 - $1,914.86 -
750 Gallon Legacy Septic Tank | 44489
Norwesco
$1,767.87 - $1,896.86Technical Drawing TANK SUMMARY PART# #44489 DIMENSIONS 96" Length x 52" Width x 62" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 1 Manway / Lid WEIGHT / SHIP CLASS 241 lbs. / Ship Class 300 CAPACITY (GALLONS) 750 SHIPS FROM ...$1,767.87 - $1,896.86 -
1000 Gallon Legacy Septic Tank | 44465
Norwesco
$2,207.87 - $2,336.86Technical Drawing TANK SUMMARY PART# #44465 DIMENSIONS 102" Length x 60" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 395 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS FROM...$2,207.87 - $2,336.86 -
1000 Gallon Legacy Septic Tank | 44475
Norwesco
$1,841.87 - $1,970.86Technical Drawing TANK SUMMARY PART# #44475 DIMENSIONS 102" Length x 60" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 320 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS FROM...$1,841.87 - $1,970.86 -
1000 Gallon Legacy Septic Tank | 44464
Norwesco
$2,207.87 - $2,336.86Technical Drawing TANK SUMMARY PART# #44464 DIMENSIONS 102" Length x 60" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 395 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS FROM...$2,207.87 - $2,336.86 -
1000 Gallon Legacy Septic Tank | 44474
Norwesco
$1,841.87 - $1,970.86Technical Drawing TANK SUMMARY PART# #44474 DIMENSIONS 102" Length x 60" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 320 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS FROM...$1,841.87 - $1,970.86 -
1000 Gallon Legacy Septic Tank | 44463
Norwesco
$2,023.87 - $2,152.86Technical Drawing TANK SUMMARY PART# #44463 DIMENSIONS 102" Length x 60" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 375 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS FROM...$2,023.87 - $2,152.86 -
1000 Gallon Legacy Septic Tank | 44473
Norwesco
$1,802.87 - $1,931.86Technical Drawing TANK SUMMARY PART# #44473 DIMENSIONS 102" Length x 60" Width x 63" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 300 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS FROM...$1,802.87 - $1,931.86 -
1000 Gallon Legacy Septic Tank | 44472
Norwesco
$1,747.87 - $1,876.86Technical Drawing TANK SUMMARY PART# #44472 DIMENSIONS 101" Length x 52" Width x 71" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 1 Manway / Lid WEIGHT / SHIP CLASS 296 lbs. / Ship Class 300 CAPACITY (GALLONS) 1000 SHIPS...$1,747.87 - $1,876.86 -
1175 Gallon Low Profile Underground Water Tank | 44405
Norwesco
$2,124.95Technical Drawing Quick Summary Part# MPN: 44405 Dimensions 127" Length x 60" Width x 51" Height Liquid Access 2 Manways / Lids Weight / Ship Class 359 lbs. / Ship Class 300 Ships From CA, GA, MN, NY, OH, OK, UT, WA Fittings Access 2...$2,124.95 -
1250 Gallon Legacy Septic Tank | 44468
Norwesco
$2,611.95Technical Drawing TANK SUMMARY PART# #44468 DIMENSIONS 116" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 459 lbs. / Ship Class 300 CAPACITY (GALLONS) 1250 SHIPS FROM...$2,611.95 -
1250 Gallon Legacy Septic Tank | 44478
Norwesco
$2,207.87 - $2,336.86Technical Drawing TANK SUMMARY PART# #44478 DIMENSIONS 116" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 379 lbs. / Ship Class 300 CAPACITY (GALLONS) 1250 SHIPS FROM...$2,207.87 - $2,336.86 -
1250 Gallon Legacy Septic Tank | 44467
Norwesco
$2,577.87 - $2,706.86Technical Drawing TANK SUMMARY PART# #44467 DIMENSIONS 116" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 459 lbs. / Ship Class 300 CAPACITY (GALLONS) 1250 SHIPS FROM...$2,577.87 - $2,706.86 -
1250 Gallon Legacy Septic Tank | 44477
Norwesco
$2,207.87 - $2,336.86Technical Drawing TANK SUMMARY PART# #44477 DIMENSIONS 116" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 379 lbs. / Ship Class 300 CAPACITY (GALLONS) 1250 SHIPS FROM...$2,207.87 - $2,336.86 -
1250 Gallon Legacy Septic Tank | 44466
Norwesco
$2,577.87 - $2,706.86Technical Drawing TANK SUMMARY PART# #44466 DIMENSIONS 116" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 435 lbs. / Ship Class 300 CAPACITY (GALLONS) 1250 SHIPS FROM...$2,577.87 - $2,706.86 -
1250 Gallon Legacy Septic Tank | 44476
Norwesco
$2,023.87 - $2,152.86Technical Drawing TANK SUMMARY PART# #44476 DIMENSIONS 116" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 355 lbs. / Ship Class 300 CAPACITY (GALLONS) 1250 SHIPS FROM...$2,023.87 - $2,152.86 -
1425 Gallon Low Profile Underground Water Tank | 44406
Norwesco
$2,642.95Technical Drawing Quick Summary Part# MPN: 44406 Dimensions 157" Length x 60" Width x 51" Height Liquid Access 2 Manways / Lids Weight / Ship Class 445 lbs. / Ship Class 300 Ships From MN, NY, OH, OK, UT, WA Fittings Access 2 Manways /...$2,642.95 -
1450 Gallon Low Profile Underground Water Tank | 43549
Norwesco
$2,642.95Technical Drawing Quick Summary Part# MPN: 43549 Dimensions 157" Length x 60" Width x 51" Height Liquid Access 2 Manways / Lids Weight / Ship Class 445 lbs. / Ship Class 300 Ships From GA Fittings Access 2 Manways / Lids Additional...$2,642.95 -
1500 Gallon Legacy Septic Tank | 44481
Norwesco
$2,768.95Technical Drawing TANK SUMMARY PART# #44481 DIMENSIONS 135" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 474 lbs. / Ship Class 300 CAPACITY (GALLONS) 1500 SHIPS FROM...$2,768.95 -
1500 Gallon Legacy Septic Tank | 44480
Norwesco
$2,739.95Technical Drawing TANK SUMMARY PART# #44480 DIMENSIONS 135" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 474 lbs. / Ship Class 300 CAPACITY (GALLONS) 1500 SHIPS FROM...$2,739.95 -
1500 Gallon Legacy Septic Tank | 44469
Norwesco
$2,958.95Technical Drawing TANK SUMMARY PART# #44469 DIMENSIONS 135" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 555 lbs. / Ship Class 300 CAPACITY (GALLONS) 1500 SHIPS FROM...$2,958.95 -
1500 Gallon Legacy Septic Tank | 44479
Norwesco
$2,557.95Technical Drawing TANK SUMMARY PART# #44479 DIMENSIONS 135" Length x 55" Width x 70" Height LIQUID ACCESS 1 Inlet , 1 Outlet , 2 Manway / Lid WEIGHT / SHIP CLASS 450 lbs. / Ship Class 300 CAPACITY (GALLONS) 1500 SHIPS FROM...$2,557.95