Boat Holding and Waste Tanks

Whether on the water in your boat or on the road in your motorhome, quality holding tanks and holding tank systems are essential to your plumbing system. Polyethylene tanks are sturdy, keeping wastewater (black water and gray water) where it belongs: out of sight (and smell). Check out Great Lakes Skipper's amazing discount prices on marine waste tanks and holding tanks, hoses, holding tank monitors, and more wastewater tanks, holding tank components and accessories by Bayliner, Raritan, MPI, Dometic, and more top brands.

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  1. SeaLand Dometic Boat VacuFlush Holding Tank | 11 Gallon
    SeaLand Dometic Boat VacuFlush Holding Tank | 11 Gallon
    GLS Stock #: 1064908-GE688
    $1,995.00 MSRP: $2,830.14
  2. Dometic 322504002 Sealand 40 Gallon Poly Boat Holding / Waste Tank System 24V
    Dometic Boat Waste Holding Tank 322504002 | 40 Gallon 24V Poly
    GLS Stock #: 1035623-PD508
    $1,795.00 MSRP: $2,351.45
  3. Dometic Boat Holding Tank w/ Pump 322506201 | 62 Gal Sea Ray 550 Fly
    Dometic Boat Holding Tank w/ Pump 322506201 | 62 Gal Sea Ray 550 Fly
    GLS Stock #: 1077344-GJ835
    $1,449.00 MSRP: $1,898.19
  4. Dometic Boat Waste Holding Tank 958043107 | 63 GAL 24V w/ Macerator
    Dometic Boat Waste Holding Tank 958043107 | 63 GAL 24V w/ Macerator
    GLS Stock #: 1082166-GD942
    $1,399.00 MSRP: $1,888.65
  5. 2001324_sealand_dometic_boat_waste_tank_system_322504002_40_gal_24vdc.jpeg
    SeaLand Dometic Boat Waste Tank System 322504002 | 40 Gal 24VDC
    GLS Stock #: 2001324-5F351
    $1,299.00 MSRP: $1,753.65
  6. Dometic Boat Holding Tank HTKHL-62/DT | Sea Ray 520 Fly 62 Gallon 24V
    Dometic Boat Holding Tank HTKHL-62/DT | Sea Ray 520 Fly 62 Gallon 24V
    GLS Stock #: 1077350-4WBN4
    $1,099.00 MSRP: $1,492.83
  7. Dometic Boat Holding Tank 958043440 | 63 Gallon Polypropylene
    Dometic Boat Holding Tank 958043440 | 63 Gallon Polypropylene
    GLS Stock #: 1077366-5M857
    $1,015.00 MSRP: $1,370.25
  8. SeaLand Dometic Boat Holding Tank System 322004024 | 40 Gallon 24V
    SeaLand Dometic Boat Holding Tank System 322004024 | 40 Gallon 24V
    GLS Stock #: 1035622-GH630
    $999.95 MSRP: $1,309.99
  9. Boat Holding Tank | 165 Gallon 48 x 30 x 29 1/8 Inch Poly
    Boat Holding Tank | 165 Gallon 48 x 30 x 29 1/8 Inch Poly
    GLS Stock #: 1060160-4S182
    $669.95 MSRP: $904.43
  10. G3 Boat Livewell Tank | 72 Gallon Off White Poly
    G3 Boat Livewell Tank | 72 Gallon Off White Poly
    GLS Stock #: 7500789-4WCF4
    $459.95 MSRP: $620.93
  11. Dometic Boat Holding Tank 32403501 | 37 x 17 x 14 1/8 Inch 3203-1420
    Dometic Boat Holding Tank 32403501 | 37 x 17 x 14 1/8 Inch 3203-1420
    GLS Stock #: 8600070-4S241
    $399.95 MSRP: $752.00
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