4 Vertical Water Storage Tank Picks From 35 to 1,000 Gallons in 2026

A vertical water storage tank stands upright, so it holds more water on less floor. That makes it a good fit for a garage corner, a shed or a narrow strip beside the house. The trade-off is height and weight in one spot. This guide covers four picks and what to check before you buy.

#1. Dunmiers 65-Gallon Vertical Tank: best small vertical tank

Dunmiers 65-Gallon Vertical Tank

Our verdict:

Best small vertical tank

Best for a garage or workshop.

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Made in the USA from UV-stabilized, BPA-free HDPE
Translucent body shows the water level
8-inch lid with breather and a 1.5-inch drain

Keep in mind: the drain plug is not included, and clear plastic lets in light, so keep it out of the sun.

Product details checked September 2026

#2. US Water Systems 35-Gallon Tank: best for closets and sheds

US Water Systems 35-Gallon Tank

Our verdict:

Best for closets and sheds

Best for small spaces.

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Heavy-duty polyethylene, 18 inches wide by 32 inches tall
110 mm wide opening
Child-resistant locking lid

Keep in mind: small capacity.

Product details checked September 2026

#3. WaterPrepared 55-Gallon Stackable Tank: best upright drum with a spigot

WaterPrepared 55-Gallon Stackable Tank

Our verdict:

Best upright drum with a spigot

Best for drawing water without a pump.

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HDPE with a UV-resistant blend
Built-in spigot that takes a garden hose
Stackable shape, about 22 x 23 x 30 inches

Keep in mind: it is heavy and fixed in place once full.

Product details checked September 2026

#4. Elkhart Plastics 1000-Gallon Vertical Tank: best large vertical tank

Elkhart Plastics 1000-Gallon Vertical Tank

Our verdict:

Best large vertical tank

Best for rain collection, well water and off-grid homes.

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Virgin polyethylene, FDA and NSF/ANSI 61 compliant per the maker
Dark UV-resistant body that blocks light
Two 16-inch manway lids, bottom drain fittings and gallon marks

Keep in mind: it needs a prepared pad.

Product details checked September 2026

Factors to consider when choosing a vertical water storage tank

Height. Measure the ceiling or overhang. Leave room to open the lid.
Base. Water weighs about 8.3 pounds per gallon. The base must be flat, level and solid.
Light. Opaque, dark tanks slow algae. Clear tanks show the level but need shade.
Fittings. A drain near the bottom and a wide lid for cleaning.
Drinking use. Look for food-grade or NSF/ANSI 61 listings.

How we picked these vertical water storage tanks

We looked for upright tanks with clear fittings and listed materials, and we checked which ones the maker says suit drinking water. We used Ready.gov's water page for storage rules. We did not test these by hand. Details come from each listing, so check the current page before you buy.

Vertical vs horizontal tanks

Vertical tanks save floor space and suit fixed spots. Horizontal tanks sit lower, which suits trailers and truck beds, and they are less likely to tip on a moving load. For home emergency water in a garage, vertical usually wins. The water storage tanks guide compares both, and the rain water barrel hub covers the full water plan.

Questions people also ask

Why choose a vertical water storage tank?

It holds more water per square foot of floor than a low horizontal tank. That suits garages, sheds and side yards.

Can a vertical tank hold drinking water?

Yes, if it is rated for it. Look for food-grade or NSF/ANSI 61 listings, and replace water you store yourself every six months as Ready.gov advises.

Does a vertical tank need a special base?

It needs a flat, level, solid base that can carry the full weight. Water weighs about 8.3 pounds per gallon, so even a 65-gallon tank is over 500 pounds full.