The Enduraplas 100 Gallon Green Vertical Storage Tank is a 100-gallon polyethylene vertical storage tank built for clean-water and general bulk-liquid duty where a compact 30-inch footprint matters. It stands 43 inches tall on a 30 x 30 inch base, so it fits tight pump houses, equipment sheds, and trailer decks while still giving you a full 100 gallons of capacity. The molded-in green color reduces light penetration to slow algae growth in stored water, and the rotomolded body carries an Enduraplas 1.9 specific-gravity rating - meaning the wall thickness is sized to hold contents up to 1.9 times the weight of water without stressing the tank. That 1.9 rating is the reason to choose this tank over a lighter-walled 1.0 specific-gravity water-only model: it gives you the headroom to store heavier-than-water liquids, not just water.
Will it work for your site
Sizing is where most water-storage mistakes start, so run the numbers before you set this tank. Filled with water, a 100 gallon load weighs roughly 834 pounds, and the tank is rated to carry contents up to 1,585 pounds. Use those figures to plan your stand, pad, or platform - a small vertical storage tank like this still needs a flat, fully supported base under the entire 30 x 30 inch footprint, not a few blocks under the edges. The 1.9 specific-gravity rating gives you real margin above plain water, so if you are storing a denser liquid you have room to work with, but always confirm the contents weight stays under the 1,585-pound rating. When you site it under a shelf or inside a trailer, remember the 43-inch figure is the tank body - leave clearance above it for the lid and any top fittings shown on the technical drawing. If you are unsure how this 100 gallon size maps to your daily draw or refill cycle, the Tank Sizing Calculator and Tank Sizing Guide walk you through it.
Confirm fittings before you plumb it in
See the technical drawing on this page for fitting locations and exact dimensional callouts before you order plumbing. Confirm the inlet and outlet thread sizes and whether a gasketed bulkhead fitting is included for your setup - match your fitting and gasket hardware to the connections shown on the drawing rather than assuming a thread size. Getting this right up front saves a return trip to the supply house once the tank is on site.
Common sizing and setup mistakes to avoid
The most frequent error on a tank this size is treating it like a throwaway drum and skipping the base prep. Polyethylene flexes under load; an unsupported or uneven base concentrates stress and shortens tank life, so a full-bearing pad is not optional. If this tank will live outdoors in a cold climate, plan for freeze protection - a slim 100 gallon vertical column gives up heat quickly. Our guide on concrete pad sizing for above-ground polyethylene tanks covers the support details, and if this is part of a rural fire or remote water-supply setup, the fire-water reservoir design guide is worth a read. For greywater, rainwater, or HVAC condensate capture, see our water reuse tank topology guide.
Freight and ordering
This vertical storage tank ships LTL freight from a single plant in Converse, TX, quoted live to your ZIP code - there is no second warehouse to shorten the lane, so the closer you are to South Central Texas, the lower your freight cost. Buyers in the Northeast and West should pull a number before assuming a price. Get an exact quote with the Freight Cost Estimator, or call us at 866-418-1777 and we will line up the best lane for your delivery. Listed price covers the tank only; LTL freight is quoted separately to your ZIP.
