Quick Answer
You can bury a poly water storage tank, but it's essential to follow specific guidelines to prevent damage, ensure structural integrity, and maintain the tank's lifespan.
Site Preparation and Tank Selection
When planning to bury a poly water storage tank, choose a tank specifically designed for underground use, typically made from HDPE (High-Density Polyethylene) or PVC (Polyvinyl Chloride). Ensure the tank is large enough to meet your water storage needs and select a tank with a suitable burial depth rating. For example, a 1,000-gallon tank might be suitable for burial up to 6 feet underground.
Burying the Tank
Dig a hole slightly larger than the tank, considering the tank’s diameter and height. Add a 4-6 inch layer of sand or gravel at the bottom of the hole, followed by a 2-3 inch layer of geotextile fabric to prevent soil from entering the tank. Place the tank in the hole, ensuring it’s centered and level. Fill the surrounding soil, compacting it in 2-3 inch layers to prevent settling.
Post-Burial Maintenance and Considerations
After burying the tank, inspect the site for any signs of water seepage or structural damage. Regularly check the tank’s condition, including its walls, bottom, and connections. Consider installing a sediment trap or filter to prevent debris from entering the tank. If you plan to bury the tank in a frost-prone area, use insulation or a protective coating to prevent damage from freezing temperatures.
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