Onion Emergency Water Storage Tank

Disaster Relief and Emergency Prep

Onion TanksThe Onion Emergency Water Storage Tank is a fast storage solution for fire fighters and emergency responders. Constructed from robust fabrics and a foam ring top these tanks are designed to rise on their own as the tank fills with non-potable or potable water. This emergency water storage tank provides compact storage, easy transportation and fast set up once on location.

Onion tanks are quick to set up, self-rising while filling up with water and easy to take down for transportation. These water storage tanks range from 250 to 10,000 gallons and are made from either a PVC or Elvaloy fabric for drinking water storage or non-potable water storage. Onion tanks can be successfully deployed in military operations, firefighting or FEMA and disaster relief situations such as floods and hurricanes. Keep onion tanks on hand as part of your emergency preparedness plan. Be prepared for emergencies with the onion emergency water storage tank.


If you have questions about products, give us a call at 1-772-646-0597 or request a price quote.

Onion Tank Features

  • Self-Supporting Tank Exterior
  • emergency water storage tankHeavy Duty PVC or Elvaloy Material
  • FDA-approved Potable Water Options
  • Welded Seams for Extended Life
  • Floating Foam Collar - No Inflation Required
  • Standard includes 2 1/2" NST Female Flange
  • 2 1/1" through 6" Camlock or Storz Adapters Available
  • 1 1/2" through 6" Male or Female Flange Also Available
  • Ground and Top Covers Available
  • Low or High Side Walls
  • Sizing & Specifications options

Onion Water Tank Benefits

  • emergency drinking water storageOpen Top for Quick Filling
  • Multi Purpose
  • Quick Access to Store Materials
  • Self-Rising
  • Folds Down for Transportation

Emergency Water Storage Tank Applications

  • Fire Fighting Water Storage
  • onion tanks for emergency water storageWater Storage in Rural Areas
  • Oil Field Water Storage
  • Relief During Major Disasters
  • Mixing Tank
  • Hazardous Waste
  • Potable Water Containment
  • Construction Site Water Supply
  • Military Operations
  • Emergency Water Storage Tank

Low Side Onion Water Tank Specifications

Capacity (Gal) Capacity (Ltr) Base Diameter Filled Height
250 Gallons 946 L 5'10" (1.8 m) 28" (0.7 m)
500 Gallons 1,893 L 7' (2.1 m) 32" (0.8 m)
750 Gallons 2,839 L 8'4" (2.5 m) 33" (0.8 m)
1,000 Gallons 3,785 L 9'5" (2.9 m) 33" (0.8 m)
1,500 Gallons 5,678 L 11'9" (3.6 m) 32" (0.8 m)
2,000 Gallons 7,570 L 13' (3.9 m) 32" (0.8 m)
2,500 Gallons 9,463 L 14'3" (4.4 m) 32" (0.8 m)
3,000 Gallons 11,355 L 15'3" (4.8 m) 34" (0.9 m)
5,000 Gallons 18,927 L 18'2" (5.5 m) 33" (0.8 m)
6,000 Gallons 22,712 L 21'6" (6.6 m) 33" (0.8 m)
10,000 Gallons 37,854 L 26'9" (8.2 m) 33" (0.8 m)

High Side Onion Water Tank Specifications

Capacity (Gal) Capacity (Ltr) Base Diameter Filled Height
500 Gallons 1,893 L 5' (1.5 m) 36" (0.9 m)
1,000 Gallons 3,785 L 8' (2.4 m) 44" (1.1 m)
1,600 Gallons 6,056 L 9' (2.7 m) 44" (1.1 m)
1,800 Gallons 6,813 L 9' (2.7 m) 46"(1.2 m)
2,000 Gallons 7,570 L 11'9" (3.6 m) 48"(1.2 m)
2,500 Gallons 9,463 L 12'8" (3.9 m) 48" (1.2 m)
3,000 Gallons 11,355 L 14'2" (4.3 m) 48" (1.2 m)
5,000 Gallons 18,927 L 16'2" (4.9 m) 60" (1.5 m)
6,000 Gallons 22,712 L 16'2" (4.9 m) 65" (1.7 m)
8,000 Gallons 30,283 L 19'5" (5.9 m) 65" (1.7 m)
10,000 Gallons 37,854 L 19' (5.8 m) 80" (2 m)

*Custom Sizes Available Upon Request

Onion Tank Product Flyer
Install Instructions

Note about Emergency Water Storage Tank: The information contained here is considered accurate. However, no warranty is expressed or implied regarding the accuracy of the data, the results obtained from use thereof, or that any such use will not infringe upon any patent. This information is furnished upon condition that the person receiving it shall evaluate its suitability for the specific application.


If you have questions about products, give us a call at 1-772-646-0597 or request a price quote.

Looking for a different emergency water tank? See: Emergency Water Storage Tank Overview Page.

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