The cistern tanks are not designed to be used above ground. They must be put in the ground. You have to backfill the tank with sand or gravel. Under the tank, there has to be a 6" bed of sand or gravel in soil terrain and a 12" bed of sand or gravel in rocky terrain. It has to have a minimum of 8" to 36" sand or gravel on top of the tank. You also need between 12" to 18" of sand or gravel to fill in around the side walls of the tank. Backfilling should be done uniformly around the tank. Never backfill at one end only.
Title: Can the Cistern tanks only be used buried in the ground?
Description: Information on burying the cistern tanks.
Last Edited: 1/16/2023
The information contained in this article is for general information purposes only. The information is provided by
United States Plastic Corp. and while we endeavor to keep the information up to date and correct, we make no representations or
warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with
respect to the website or the information, products, services, or related graphics contained on the website for any purpose.
Any reliance you place on such information is therefore strictly at your own risk.
In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss
or damage, or any loss or damage whatsoever arising from loss of materials, time or profits arising out of,
or in connection with, the use of this information.