The Chem-Tainer 4000 gallon vertical water storage tank holds 4,000 gallons of fresh water on a footprint just 102 by 102 inches, standing 125 inches tall. It is rotationally molded from polyethylene with a 1.0 specific gravity rating, which means it is built and warranted for water and other contents up to the weight of water - the staple of bulk water storage, rainwater collection, and reserve supply for rural, agricultural, and light-industrial sites. If you are sizing a vertical storage tank for water storage, this is the large end of the single-tank range before you step into multi-tank trains.
Will it work for your job
Two numbers decide whether your pad and your site can take this tank. Filled to capacity with water, it carries 33,360 pounds - that is the full water weight and the maximum rated contents weight, since the tank is rated at 1.0 specific gravity. All of that load sits on a 102 by 102 inch footprint, so the pad underneath has to be flat, level, and engineered to carry better than 16 tons concentrated over roughly 72 square feet. For pad design on a tank this size, our concrete pad sizing guide for above-ground polyethylene tanks walks through the ACI 360R-10 framework before you pour. At 125 inches tall you also need overhead clearance for the lid and fill access.
Fittings and the technical drawing
Outlet, fill, and vent configuration is not standardized in our data for this SKU, so confirm the fitting positions, sizes, and gasket material directly from the technical drawing on this page, or call 866-418-1777 before you order. Check the outlet and fill locations against your plumbing run, and confirm the delivery site can stage and offload a tank standing 125 inches tall - no fittings or handling hardware are quoted with the tank itself. This is a single-component water storage tank; we will not guess at thread sizes we do not hold in our records.
Sizing and the 1.0 SG limit
The 1.0 specific gravity rating is the line you do not cross. This tank is rated for water and for liquids no heavier than water. Put a denser liquid in it - many fertilizers, brines, and chemical concentrates weigh more than water per gallon - and you exceed the wall and fitting design load even though the tank looks full at the same level. For water storage that is a non-issue; for anything denser, confirm the contents weigh 1.0 SG or less, or call 866-418-1777 to select a 1.5+ SG industrial tank. Our Tank Sizing Calculator and Tank Sizing Guide help you match capacity, footprint, and weight to your site before you commit.
Common applications
At 4,000 gallons this is a workhorse for reserve and reuse storage. For rural fire-protection reserves, our fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate freeze protection. For grey-water, rainwater, and HVAC condensate aggregation, the industrial water reuse topology guide shows how vertical storage tanks like this one fit into quality-banded storage trains. Comparing brands at the next size down? See our Snyder vs Norwesco vs Chem-Tainer 2000 gallon vertical storage tank comparison.
This tank ships LTL freight from Hummelstown, PA, quoted live to your ZIP. Because it ships from a single eastern point, freight scales hard for western ZIPs on a tank this size and weight - get your exact rate before you budget with the Freight Cost Estimator, or call 866-418-1777 to lock in delivery. Plan a clear path for the truck and offloading equipment, and confirm your staging point before the tank arrives.
