The Enduraplas 100 Gallon Black Vertical Water Storage Tank is a compact polyethylene tank built for point-of-use and buffer water storage where floor space is tight. At 43 inches tall on a 30-by-30-inch footprint, it holds 100 gallons in a black tank molded in Converse, Texas and rated to a specific gravity of 1.1. The black resin blocks light to slow algae growth, which makes it a practical choice for outdoor and semi-shaded installs.
Will it work for your site?
This is a vertical water tank with a 30-by-30-inch footprint, so it drops into a corner, a utility closet, or a small pad without the sprawl of a low-profile design. Filled with water it weighs about 834 pounds. Its 1.1 specific gravity rating means it is cleared for contents up to about 917 pounds — that figure is the density ceiling, not spare load capacity, so the tank suits water (roughly 8.34 lb per gallon) with only a thin margin above it. If you are matching capacity to a demand cycle, run the numbers through our Tank Sizing Calculator and cross-check the method in the Tank Sizing Guide.
Where a 100-gallon vertical fits
A 100-gallon vertical tank sits at the small end of bulk storage, well suited as a supplemental water storage tank for rural draw-down or a reuse buffer. Storing anything heavier than water pushes toward the 1.1 ceiling quickly, so size up the tank family for denser contents rather than crowd the rating. If this feeds a private fire-protection stack, treat it as a top-up to an existing larger reservoir — the fire-water reservoir design guide walks the NFPA 22 sizing discipline and cold-climate freeze protection. For grey-water, rainwater, or HVAC condensate aggregation, the water reuse topology guide covers quality-banded storage trains.
The mistake to avoid
The most common error on a small vertical tank is setting it on soil or an undersized pad. Even at 100 gallons, a fully loaded tank concentrates over 900 pounds on a 30-by-30-inch footprint, and uneven settlement stresses the tank wall. Pour or verify a proper pad first — the concrete pad sizing guide lays out the ACI 360R-10 framework — and commission the install with a controlled water fill using the hydrostatic test methodology to catch pad settlement and leaks before the tank goes into service. Refer to the technical drawing on this page to confirm dimensions and connection layout for your plumbing.
This tank ships LTL freight from the Converse, Texas plant, quoted live to your ZIP. Get a rate with the Freight Cost Estimator or call 866-418-1777 to confirm lead time and lock in your order.
