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Flexible Rain Water Tanks

Rainwater Storage Tanks From 25 to 210,000 Gallons Made in the USA

Flexible Rainwater Storage Tanks are a unique option for storing and collecting rainwater. Designed to feature a low overall storage height, these collapsible rainwater harvesting tanks can effectively be stored in small areas, such as crawl spaces, basements, or under decks. Pillow Tanks for rainwater offer a great collection system, while keeping stored liquids safe and out of the way. Sizes start at 25 gallons and can be as large as 210,000 gallons depending on your needs.

How Flexible Rainwater Bladder Tanks Work:rainwater storage tanks in many sizes

Standard design of most of our smaller pillow tanks features two standard fittings:

  1. Bulkhead Fitting located on the top of the tank for fill/discharge
  2. Bulkhead Fitting located on the side of the tank for fill/discharge

These dual fittings allow the customer to simultaneously attach both a fill and a discharge connection to the tank. For rainwater collection, common layout features a fill hose that stretches from a downspout to a tank fitting. Filters may be added during this process to help eliminate leaves or other large times from the rainwater tank. Connected to the second fitting is a discharge hose and pump. Discharge hoses typically pump water to utilities or other equipment where water is intended to be reused.

Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.

Collapsible Rainwater Harvesting Tank Applications

There are many different reasons for collecting and storing rainwater. While many people intend to reuse collected water for utilities or sprinkler systems, others have created filtration systems that allow the water to be reused for drinking purposes. For this reason, fabrics used to construct the tanks can be either potable water grade or standard non potable grade. Whether you are looking to store extra water during droughts or reuse rainwater to save in costs, we have a tank that can work for you.

rain water storage tank

Rainwater Bladder Tank Typical Uses:

For sizing information view our Small Pillow Tank Sizes or Large Pillow Tank Sizes.

Flexible Rainwater Tank Benefits

  • Wide Range of Available Sizes
  • Low Profile for Tight Storage Spaces
  • Perfect for Under Decks & Basements
  • Custom Fittings to Meet Site Requirements
  • Drinking Water Compatible Materials Available
  • Built to Meet your Site Specifications
  • Equipped with UV Resistance for Outdoor Storage
  • Wide Range of Available Capacities
  • Barrel Ends Available (Rounded Corner Pillow Tanks)
  • Multiple Fitting Options

Rainwater Pillow Tank Technical Specifications

Fabric: Fabrics used for rainwater storage tanks can be made with a couple of different fabrics depending on the intended use of the water stored inside the tank. The standard fabrics used are polyurethane, polymer alloy, and
E PVC coated materials. For reuse in spraying, washing, or utilities, a standard water grade fabric will be used. If
you will be using the rainwater for drinking water purposes, tanks will then be built with an NSF 61 and FDA rated
fabric that can safely store potable water.

Contact Time: The contact time for your specific rainwater storage tank can range depending on the material used
for your tank. Contact times can vary between 1 and 7 years. It should be noted, however, that the contact times are not an indication of functionally, but rather a point in time where the fabric on your tank may start to change due to weathering or chemical process. This has no bearing on the longevity of a tank.

Fittings: Standard fittings on the tanks will feature a 2" fill and drain fitting, with options from 3/4" to 3" and 4" to 6" also available.

Optional Fittings

Packaging: The packaging for these rainwater storage tanks is largely decided based on the intended use and mobility requirements of your tank. We offer a variety of solutions based on your application, including carry bags, totes, wooden treated crates, or as specified (additional costs may apply for unique packaging).

To help ensure the longevity and lifespan of your tank, ground cloths, berms, or rub pads can be placed underneath the tank to add additional abrasion resistance and ground protection.

Read customer inquiries about rainwater storage tanks regarding:

Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.

Small Rainwater Storage Tanks

flexible rainwater tanksTypical design for smaller rainwater tanks will look similar to the 75 gallon model shown on the right. On the top will be the first fitting and on the side above the seam will be the second fitting. If required, alternative fitting sizes and styles can be added to meet specific requirements for your site.

 

Capacity (gallons)
Capacity (Liters)
Length
Width
Height
25 gallons 94 liters 36" (0.9 m) 24" (0.6 m)

8" (0.2 m)

50 gallons 189 liters 52" (1.3 m) 36" (0.9 m) 9" (0.23 m)
75 gallons 283 liters 54" (1.37 m) 42" (1 m) 9" (0.23 m)
100 gallons 378 liters 66" (1.68 m) 48" (1.2 m) 9" (0.23 m)
150 gallons 567 liters 60" (1.5 m) 60" (1.5 m) 12" (0.3 m)
250 gallons 946 liters 84" (2.1 m) 60"(1.5 m) 14" (0.36 m)
275 gallons 1,040 liters 72" (1.8 m) 80" (2 m) 16" (0.4 m)
300 gallons 1,135 liters 84" (2.1 m) 66" (1.68 m) 14" (0.36 m)
500 gallons 1,892 liters 108" (2.7 m) 84" (2.1 m) 16" (0.4 m)
600 gallons 2,271 liters 120" (3 m) 84" (2.1 m) 16" (0.4 m)
700 gallons 2,649 liters 114" (2.9 m) 99" (2.5 m) 16" (0.4 m)
800 gallons 3,028 liters 72" (1.8 m) 120" (3 m) 24" (0.6 m)
900 gallons 3,405 liters 72" (1.8 m) 132" (3.35 m) 24" (0.6 m)
1,000 gallons 3,785 liters 132" (3.35 m) 108" (2.74 m) 16" (0.4 m)
1,500 gallons 5,678 liters 168" (4.27 m) 120" (3 m) 18" (0.46 m)
2,000 gallons 7,570 liters 174" (4.4 m) 126" (3.2 m) 22" (0.56 m)
2,500 gallons 9,463 liters 174" (4.4 m) 144" (3.6 m) 24" (0.6 m)
3,000 gallons 11,356 liters 180" (4.57 m) 162" (4.1 m) 24" (0.6 m)
4,000 gallons 15,141 liters 216" (5.5 m) 168" (4.27 m) 27" (0.7 m)
5,000 gallons 18,927 liters 234" (5.94 m) 186" (4.72 m) 27" (0.7 m)

Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.


Large Rain Water Storage Tanks

Capacity (gallons)
Capacity (liters)
Length
Width
Height
5,500 gallons 20,820 liters 20' (6.1 m) 17' (5.2 m) 2.25' (0.7 m)
6,000 gallons 22,712 liters 21' (6.4 m) 18' (5.5 m) 2.25' (0.7 m)
6,5000 gallons 24,605 liters 20.8' (6.34 m) 18' (5.5 m) 2.5' (0.76 m)
7,000 gallons 26,498 liters 19' (5.8 m) 20' (6.1 m) 2.5' (0.76 m)
7,500 gallons 28,391 liters 20' (6.1 m) 20' (6.1 m) 2.5' (0.76 m)
8,000 gallons 30,283 liters 19' (5.8 m) 19' (5.8 m) 3' (0.9 m)
9,000 gallons 34,069 liters 20' (6.1 m) 21' (6.4 m) 3' (0.9 m)
9,500 gallons 35,961 liters 21' (6.4 m) 21' (6.4 m) 3' (0.9 m)
10,000 gallons 37,854 liters 21' (6.4 m) 23' (7 m) 3' (0.9 m)
20,000 gallons 75,708 liters 33' (10.1 m) 25' (7.6 m) 3.5' (1.07 m)
30,000 gallons 113,562 liters 36' (11 m) 32' (9.75 m) 3.5' (1.07 m)
40,000 gallons 151,416 liters 37' (11.3 m) 40' (12.2 m) 4' (1.2 m)
50,000 gallons 189,271 liters 42' (12.8 m) 43' (13.1 m) 4' (1.2 m)
70,000 gallons 264,979 liters 48' (14.6 m) 42' (12.8 m) 4' (1.2 m)
80,000 gallons 302,833 liters 77' (23.47 m) 30' (9.1 m) 5.5' (1.7 m)
106,000 gallons 401,254 liters 88' (26.8 m) 35' (10.7 m) 5.5' (1.7 m)
125,000 gallons 473,176 liters 58' (17.7 m) 59' (18 m) 5' (1.5 m)
150,000 gallons 567,812 liters 78'(23.77 m) 58' (17.7 m) 6' (1.8 m)
210,000 gallons 794,936 liters 75' (22.8 m) 73' (22.25 m) 6' (1.8 m)

Have a Cistern Rain Water Storage Tank that is Leaking?

cistern linersCheck out our Cistern Liners. Made from the same reliable fabric as these storage units, liners are available in custom sizes to match these dimensions and storage requirements of your existing tank.

Cistern Liner Advantages:

  • Easy to Fold and Ship
  • Sized to the Exact Specifications of your Tank
  • Designed for the Liquid being Stored in the Tank

We offer several water storage tanks for collecting, harvesting, and storing rainwater. To view more rainwater collection tanks, please check out the Cistern Water Tank Page.

Questions? We can help! Call our team at +1-772-646-0597 or fill out our quote request form to discuss your requirements.