Underground Septic Tanks

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

1500 Gallon Legacy Septic Tank | 44471

1500 Gallons 135'' 55'' 70'' N/A 44471
$3,667.98

1500 Gallon Legacy Septic Tank | 44470

1500 Gallons 135'' 55'' 70'' N/A 44470
$3,629.98

1725 Gallon Low Profile Underground Water Tank | 44407

1725 Gallons 157'' 69'' 51'' N/A 44407
$3,684.98

1750 Gallon Low Profile Underground Water Tank | 43550

1750 Gallons 157'' 69'' 51'' N/A 43550
$3,684.98

2000 Gallon Below Ground Holding Tank | 44593

2000 Gallons 126'' 98'' 51'' N/A 44593
$5,102.98

2000 Gallon Below Ground Holding Tank | 42559

2000 Gallons 126'' 98'' 51'' N/A 42559
$5,105.98

2500 Gallon Below Ground Holding Tank | 44079

2500 Gallons 159'' 99'' 51'' N/A 44079
$6,329.98
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