Rainwater Pillow TM

Flexible tanks are flexible in more ways than one! Flexible PVC tanks like the Rainwater PillowTM are easy to locate in a variety of locations that ‘hard tanks’ cannot go. Being able to be hidden in crawl spacs and under deck, they give the benefits of underground cisterns without the excavation challenges and cost. With completely customizable sizing, Rainwater Pillows can be made for small residential to large commercial projects.


We offer some standard sized kit systems which may be perfect for your home installation.

Sample Pillow Kits for outdoor irrigation

Includes prefiltration, pump, and fittings needed to do the job. Contact us for details!

1000 gallon kit
10′ x 8′ x 2′                   60 lbs.
2000 gallon kit
13.5′ x 11.8′ x 2′             82 lbs.
4000 gallon kit
18′ x 12′ x 2.5′            105 lbs.

For custom sizes, here are some sample sizes and prices to give you an idea of cost. Almost any other size is possible. Contact us for details:

Pillow Only
7,000 gallon
29′ x 11′ x 3′
15,000 gallon
28′ x 24′ x 3′
20,000 gallon
30′ x 30′ x 3′
25,000 gallon
33′ x 33′ x 3′
50,000 gallon
40′ x 40′ x 3.5′

Here at Ecovie, the big advantages we have seen with Rainwater Pillows is in installed cost versus underground tanks and ease of installation and transport. If you have the right application, this can be a perfect solution. Here is an example of a 30,000 gallon potable rainwater system we designed and installed using Rainwater Pillows, Click Here. Also, check out this application in a restaurant in Atlanta.