The Enduraplas 7011 gallon green vertical storage tank is built for large-scale bulk water and liquid storage where a single vessel has to hold serious volume. It carries 7,011 gallons on a 144-inch by 144-inch footprint in green polyethylene, and it is rated to a 1.9 specific gravity, meaning the wall is engineered to hold contents up to 1.9 times the density of water. Manufactured by Enduraplas, this vertical storage tank is a workhorse for agricultural water, rural fire reserve, industrial process water, and rainwater aggregation.
Will it work for your site?
Start with the load math before you pour a pad. Filled with plain water this tank weighs roughly 58,472 pounds, and at its full 1.9 SG rating the contents alone can reach about 111,096 pounds. Rate your foundation to that higher 111,096-pound figure, not the water-only weight, so a denser liquid never over-loads an under-spec'd slab. A vertical tank this size needs a level, continuously supported base sized from the full 144 x 144 inch footprint. Confirm the exact height, diameter, and fitting positions on the technical drawing on this page before you set anchor points and site plumbing. If you are laying a new slab, our concrete pad sizing guide walks through the ACI framework for above-ground polyethylene tanks, and you can right-size the vessel to your draw and refill cycle with the Tank Sizing Calculator or the Tank Sizing Guide.
Green tint and rating notes
The green color reduces light transmission into the tank, which helps discourage algae growth in stored water compared to lighter translucent tanks. The 1.9 specific gravity rating gives you headroom above plain water, so the tank is not maxed out simply holding water. For high-volume uses such as rural fire protection reserves, our fire-water reservoir design guide covers reserve sizing and cold-climate freeze protection, and if you are aggregating grey-water, rainwater, or HVAC condensate, the water reuse tank topology guide maps out quality-banded storage trains.
The mistake to avoid
The most common error on a tank this large is underbuilding the foundation. An empty poly tank is light and easy to reposition, but once filled it will not tolerate an uneven or undersized pad; localized settling under six figures of loaded weight can distort the shell. Set the pad first, verify it is level and rated for the full 1.9-SG contents weight, then fill. Confirm your inlet, outlet, and overflow positions against the technical drawing before delivery so your site plumbing lines up on the first try.
This tank ships by LTL freight from the nearest Enduraplas plant, either Converse, TX or Neche, ND, with freight quoted live to your ZIP. Because those two origins sit far apart, your freight cost and lead time depend heavily on which plant is closer to you, which is exactly what our Freight Cost Estimator resolves when you enter your ZIP. For an instant quote or help confirming capacity, footprint, and delivery access, call 866-418-1777.
