Impervious to corrosion and rust and highly resistant to damage from impact and harsh weather elements, polyethylene plastic tanks are renowned for their durability.
At Greer, we’ve spent years designing each and every one of our tanks to last you a long time under our extreme conditions. Each large plastic water tank is tested and certified for safely storing potable water. They are lightweight, durable, and won’t rust or crack in our Alaskan weather conditions.
Our polyethylene plastic underground tanks are NSF approved for storing potable drinking water and are BPA free.
Click on the tab below to see available sizes.
Underground Plastic Water Tanks Product Details
Standard Features:
- Approved by the NSF for the storage of potable water.
- BPA Free.
- All attachments BPA Free.
- Can be used for rainwater or well water.
- Gray tanks buriable to a depth of 48″
- Blue tanks buriable to a depth of 120″
Gray 4′ Bury Polyethylene Plastic Underground Water Tanks:
| Gallons | Length | Width | Height | Weight |
|---|---|---|---|---|
| 1000 | 102" | 78" | 59" | 250 lbs |
| 1250 | 102" | 78" | 68" | 402 lbs |
| 1500 | 102" | 78" | 77" | 454 lbs |
*48” maximum burial depth
Blue 10′ Bury Polyethylene Plastic Underground Water Tanks:
| Gallons | Length | Width | Height | Weight |
|---|---|---|---|---|
| 1000 | 102" | 78" | 59" | 501 lbs |
| 1250 | 102" | 78" | 68" | 552 lbs |
| 1500 | 102" | 78" | 77" | 608 lbs |
*120” maximum burial depth
FAQs
Greer’s underground plastic water tanks are available in models designed for different burial depths. Gray tanks can be buried up to 48 inches, while blue tanks can be buried up to 120 inches (10 feet). Always follow manufacturer installation guidelines and local soil/backfill requirements to ensure proper support and longevity.
Yes. Our underground plastic water tanks are NSF approved for potable water storage and are BPA free, including all fittings and attachments. This ensures safe storage of drinking water, well water, and rainwater collection in residential, commercial, and remote applications.
No. Polyethylene water containers are impervious to rust and corrosion, unlike steel alternatives. They are highly resistant to impact, harsh weather, and extreme freeze-thaw cycles, making them ideal for underground installation in Alaska and Washington climates.
Greer offers underground polyethylene water tanks in 1000, 1250, and 1500 gallon capacities for both 4-foot and 10-foot burial depths. Each size is engineered for strength, durability, and long-term underground performance.