The Enduraplas 340 Gallon Dark Green Vertical Water Storage Tank is a polyethylene vertical tank built for above-ground bulk water storage on farms, remote sites, and light industrial properties. It holds 340 gallons in a compact 40-inch by 40-inch footprint and stands 74 inches tall, so it fits through standard gates and tucks against a wall or under an eave while keeping a small ground print. Its dark green, opaque walls limit light penetration to discourage algae growth in stored water. This Enduraplas vertical water storage tank ships LTL from Converse, TX, which is the closest, lowest-freight origin for Texas and the Southwest, with the cost quoted live to your ZIP. It is the tank to look at if you need a vertical storage tank for water storage that has to sit outside and stay put.
Will it work for your install?
The specs that drive the install are weight and footprint. Filled with plain water the tank carries roughly 2,836 pounds, and at its 1.1 specific-gravity rating the maximum rated contents weight is 3,119 pounds. Plan the pad for the full load, not the empty shell: a 40 x 40 inch footprint concentrates that weight on a small area, so a level, full-contact base is not optional. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide before you commit to a location. For the pad itself, see our guide on concrete pad sizing for above-ground polyethylene tanks, which walks through the ACI 360R-10 framework.
Fittings and sizing it into a larger system
Confirm port locations against the technical drawing on this page before you order, and use gaskets and fitting materials rated for your stored liquid and for water-like service within the 1.1 SG limit. If a fitting detail is not called out, confirm locations and sizes with us at 866-418-1777 before ordering rather than guessing. At 340 gallons this tank is a workhorse for a single-point supply, a pressure-tank feed, or one cell in a banked storage train. If you are aggregating grey-water, rainwater, or HVAC condensate, our write-up on industrial water reuse tank topology covers how to band quality and sequence treatment across multiple tanks. For private fire protection, our fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate freeze protection.
The mistake to avoid
Two things sink polyethylene water installs. First, skipping acceptance testing: fill and prove the tank before you trust it. Our hydrostatic test methodology guide covers water-fill discipline, pad-settlement monitoring, and hold-time math so you catch a fitting leak or a settling pad on day one instead of after the tank is in service. Second, respect the 1.1 specific-gravity rating: this is a water tank suited to water and light, water-like liquids within that limit. For liquids heavier than 1.1 SG, such as many fertilizers and chemicals, step up to a 1.5- or 1.9-SG-rated vertical tank instead of pushing this one past its rating.
This tank ships LTL freight from our plant in Converse, TX, with the cost quoted live to your ZIP code. Get your number from the Freight Cost Estimator or call us at 866-418-1777 and we will quote it for you and help confirm the right size for your site.
