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CAT CLASS: HQ-10909

Up to 500 gal Water Tank

Water tanks up to 500 gallons provide portable on-site water supply for dust suppression, equipment washdown, and hand-washing stations where crews work beyond permanent infrastructure. This smallest size class in the water tank ladder emphasizes portability—most units remain light enough for forklift repositioning without dedicated trailer transport. For higher-volume dust control or multi-crew operations, the 500-2,000 gal Water Tank class offers extended capacity at the cost of specialized hauling.

521
Models
22
Brands
Water Tank

Cat classes

Pick a size class — capacity and reach differ across the range.

Key specifications

SpecificationTypical rangeWhat it means
Capacity200–500 galTotal water volume; fills support half-day to full-day dust control for a single zone or crew.
Load capacity441–992 lb (200–450 kg)Weight rating for forklift or pallet-jack handling; corresponds to structural design and base footprint.
Max height4–37 ft (1.2–11.3 m)Installed height range spans low-profile horizontal leg tanks to tall vertical towers for gravity feed.

How to choose

Tanks up to 500 gallons suit single-crew dust control, small concrete pours, and temporary wash stations where water demand remains intermittent and forklift access permits on-site repositioning. The format choice—horizontal leg tanks versus vertical towers—depends on available footprint and whether gravity pressure or pump delivery is preferred. When daily water consumption exceeds 400 gallons, or when multiple spray bars operate simultaneously, the 500-2,000 gal Water Tank class reduces refill frequency and supports distributed manifold systems. Projects confined to pedestrian access or rooftop placement may require this smaller class despite higher volume needs.

What this size handles

  • Dust suppression for a single saw-cutting crew on a roadway shoulder
  • Hand-wash station supply for a 10-person demolition crew over a weekend
  • Concrete-curing water for slab pours under 1,000 sq ft
  • Equipment washdown at a small excavation staging area
  • Temporary potable water backup during utility service interruption
  • Spray-bar feed for a compact street-sweeper or small excavator attachment

Safety & operation

  • Verify load capacity of forks, pallets, and ground surface before positioning filled tanks; water weight approaches 4,000 lb at 500-gallon capacity.
  • Secure vertical tanks with straps or tie-downs on uneven terrain to prevent tip-over during filling or high winds.
  • Inspect polyethylene and fiberglass shells for UV degradation and stress cracks before each fill cycle, especially on aged units.
  • Use potable-rated tanks and hoses exclusively for drinking water; industrial tanks may leach chemicals unsuitable for human consumption.

Transport & logistics

  • Horizontal leg tanks (200–300 gal) typically load onto pickup beds or utility trailers without special tie-downs.
  • Vertical tanks to 500 gallons fit standard flatbed trailers; taller models require clearance checks for overhead wires and bridges.
  • Forklift delivery common for leg tanks; operator positions forks under molded channels or reinforced base rails.

Power & supply

  • Gravity-fed systems require no power when tank elevation provides adequate head pressure for spray nozzles or hose bibs.
  • Electric transfer pumps (120 V, 5–10 A) common for filling from hydrants or for pressurized distribution to remote points.
  • Diesel- or gas-powered pumps used when filling from ponds, streams, or water-truck tankers without electrical hookup.

Frequently asked

What distinguishes a leg tank from a vertical tower in this size class?
Leg tanks rest horizontally on molded or welded supports, offering a low center of gravity and forklift channels; vertical towers maximize capacity within a small footprint and provide natural head pressure for gravity feed. Both formats appear throughout the up-to-500-gallon range.
How many refills per day does a 500-gallon tank require for typical dust control?
A single water-spray bar on an excavator or skid-steer consumes 5–15 gallons per hour; a 500-gallon tank supports 6–10 hours of intermittent spraying, meaning most small sites refill once daily or every other day depending on soil conditions and activity intensity.
Can tanks in this size class supply pressure washers directly?
Gravity flow from elevated tanks may feed low-pressure washdown nozzles, but gasoline pressure washers (2,000+ psi) require a dedicated transfer pump with adequate flow rate—typically 2–4 GPM minimum—to prevent cavitation and maintain steady inlet pressure.

Compare popular models

Find by spec →

Normalised to the same units. A dash means the figure was not published.

ModelLoad capacityMax height
Baker Tank Mix Tank System 420 gal37 ft (11.3 m)
Baker Tank Double Wall Tank 420 gal37 ft (11.3 m)
Chem-Tainer TC3845LC – 200 Gallon Round Horizontal Bulk Storage Tank 200 gal3.8 ft (1.2 m)
Chem-Tainer N-44800 – 100 Gallon Norwesco Free Standing Water Tank 100 gal3.2 ft (1.0 m)
Den Hartog HZ0055-23 55 gal3.2 ft (1.0 m)
Den Hartog HZ0070-23 70 gal3.7 ft (1.1 m)

Related equipment

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Sources

Every specification is verified against the manufacturer's published data, with the source linked for reference.

Up to 500 gal Water Tank

157 models · Page 1 of 4 · Every spec cited to source

Den Hartog OP0055-2DC
Den Hartog OP0055-2DC
Den Hartog · Open Top Containment Tank
2 gal
Chem-Tainer TC1114AA – 5 Gallon Open Top Flat Bottom Cylindrical Tank
Chem-Tainer · Open Top Cylindrical Tank
5 gal
Chem-Tainer TC1113CA – 5 Gallon Cylindrical Cone Bottom Tank
Chem-Tainer · Cone Bottom Tank
5 gal
Den Hartog SP0006-FU
Den Hartog SP0006-FU
Den Hartog · Fuel Tank (XLPE)
6 gal
Chem-Tainer TC1021AA – 7 Gallon Open Top Flat Bottom Cylindrical Tank
Chem-Tainer · Open Top Cylindrical Tank
7 gal
Den Hartog VT0010-12
Den Hartog VT0010-12
Den Hartog · Vertical Tank – Dome Top
10 gal
Den Hartog SP0012-FU
Den Hartog SP0012-FU
Den Hartog · Fuel Tank (XLPE)
12 gal
Den Hartog SB00015
Den Hartog SB00015
Den Hartog · Spot Sprayer Tank
15 gal
Den Hartog VT0020-16
Den Hartog VT0020-16
Den Hartog · Vertical Tank – Dome Top
20 gal
Chem-Tainer DC-900020-1.2-BLK – 20 Gallon DuraCast Vertical Water Tank (Black)
Chem-Tainer · Vertical Water Tank
20 gal
Den Hartog VT0025-18
Den Hartog VT0025-18
Den Hartog · Vertical Tank – Dome Top
25 gal
Den Hartog HZ0025-23
Den Hartog HZ0025-23
Den Hartog · Horizontal Round Tank
25 gal
Den Hartog SB00025
Den Hartog SB00025
Den Hartog · Spot Sprayer Tank
25 gal
Norwesco Spot Sprayer Tank 25 gal
Norwesco · Spot Sprayer Tank
25 gal
3 ft (0.9 m)
Plastic-Mart Ronco Plastics 30 Gallon Marine and RV Water/Waste Holding Tank (R-B140)
Plastic-Mart Ronco Plastics 30 Gallon Marine and RV Water/Waste Holding Tank (R-B140)
Plastic-Mart · Marine and RV Water/Waste Holding Tank
30 gallons
3.2 ft (1.0 m)
Den Hartog SB00030
Den Hartog SB00030
Den Hartog · Spot Sprayer Tank
30 gal
3 ft (0.9 m)
Chem-Tainer TC2218LC – 30 Gallon Round Horizontal Bulk Storage Tank
Chem-Tainer · Horizontal Round Tank
30 gal
Den Hartog FS0035-18
Den Hartog FS0035-18
Den Hartog · Free Standing Horizontal Tank
35 gal
Chem-Tainer TC2435DC – 35 Gallon Double Wall Tank
Chem-Tainer · Double Wall Tank
35 gal
Den Hartog VT0040-18
Den Hartog VT0040-18
Den Hartog · Vertical Tank – Dome Top
40 gal
Den Hartog SB00040
Den Hartog SB00040
Den Hartog · Spot Sprayer Tank
40 gal
3 ft (0.9 m)
Chem-Tainer TC1851IW-BLACK – 45 Gallon Vertical Water Tank (Black)
Chem-Tainer · Vertical Water Tank
45 gal
Chem-Tainer TC1851IC – 45 Gallon Vertical Bulk Storage Tank (Commercial)
Chem-Tainer · Vertical Bulk Storage Tank
45 gal
Dura-Cast Products Open Top Round Tank 50 Gallon (501050)
Dura-Cast Products Open Top Round Tank 50 Gallon (501050)
Dura-Cast Products · Open Top Tank
50 gallons
Den Hartog LP0050-RT
Den Hartog LP0050-RT
Den Hartog · Low Profile Rectangle Tank
50 gal
Den Hartog VT0055-20
Den Hartog VT0055-20
Den Hartog · Vertical Tank – Dome Top
55 gal
Den Hartog VT0055-23
Den Hartog VT0055-23
Den Hartog · Vertical Tank – Flat Top
55 gal
Den Hartog HZ0055-23
Den Hartog HZ0055-23
Den Hartog · Horizontal Round Tank
55 gal
3.2 ft (1.0 m)
Chem-Tainer TC2236AA – 55 Gallon Open Top Flat Bottom Cylindrical Tank
Chem-Tainer · Open Top Cylindrical Tank
55 gal
Den Hartog CB0055-23
Den Hartog CB0055-23
Den Hartog · Cone Bottom Tank – Flat Top
55 gal
Den Hartog FS0055-23
Den Hartog FS0055-23
Den Hartog · Free Standing Horizontal Tank
55 gal
Chem-Tainer TC2038IW-BLACK – 55 Gallon Vertical Water Tank (Black)
Chem-Tainer · Vertical Water Tank
55 gal
Chem-Tainer TC2038IA – 55 Gallon Vertical Bulk Storage Tank (Industrial)
Chem-Tainer · Vertical Bulk Storage Tank
55 gal
Chem-Tainer TC2038IC – 55 Gallon Vertical Bulk Storage Tank (Commercial)
Chem-Tainer · Vertical Bulk Storage Tank
55 gal
Chem-Tainer TC2236CA – 55 Gallon Cylindrical Cone Bottom Tank
Chem-Tainer · Cone Bottom Tank
55 gal
Den Hartog OP0055-23
Den Hartog OP0055-23
Den Hartog · Open Top Containment Tank
55 gal
Den Hartog SB00060
Den Hartog SB00060
Den Hartog · Spot Sprayer Tank
60 gal
3 ft (0.9 m)
Den Hartog LP0060-RT
Den Hartog LP0060-RT
Den Hartog · Low Profile Rectangle Tank
60 gal
Den Hartog VT0065-23
Den Hartog VT0065-23
Den Hartog · Vertical Tank – Dome Top
65 gal
Den Hartog DW0065-28
Den Hartog DW0065-28
Den Hartog · Dualline Double Wall Tank
65 gal
Den Hartog FS0065-24
Den Hartog FS0065-24
Den Hartog · Free Standing Horizontal Tank
65 gal
Chem-Tainer TC2342IC – 65 Gallon Vertical Bulk Storage Tank (Commercial)
Chem-Tainer · Vertical Bulk Storage Tank
65 gal
Den Hartog HZ0070-23
Den Hartog HZ0070-23
Den Hartog · Horizontal Round Tank
70 gal
3.7 ft (1.1 m)
Den Hartog FS0070-24
Den Hartog FS0070-24
Den Hartog · Free Standing Horizontal Tank
70 gal
Den Hartog VT0075-23
Den Hartog VT0075-23
Den Hartog · Vertical Tank – Flat Top
75 gal
Den Hartog HZ0075-24
Den Hartog HZ0075-24
Den Hartog · Horizontal Round Tank
75 gal
3.9 ft (1.2 m)
Den Hartog HE0085-36
Den Hartog HE0085-36
Den Hartog · Elliptical Tank
85 gal
3.9 ft (1.2 m)
Dura-Cast Products Open Top Round Tank 90 Gallon (501090)
Dura-Cast Products Open Top Round Tank 90 Gallon (501090)
Dura-Cast Products · Open Top Tank
90 gallons
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