A Black Friday "deal" is often a normal price next to an inflated list price. Here a water storage tank only counts as on sale when its checked price is at least 15% below its own typical price over the last 90 days, from our price history. The best-rated models are listed too, since many are good value without a sale. See deals in every category.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
On sale now
No water storage tank rated 3.8 or higher is 15% or more below its typical price at the last price check (November 9, 2026). Prices are rechecked through the sales; this list updates when one drops. See the recent price changes.
Best buys at their normal price
The top-rated models in each size. A sale on one of these is worth more than a big discount on a weaker model.
Best Small Water Storage Tanks
- Reliance Aqua-Tainer 7 Gallon, 2-Pack#1 of 11Full review
For camping and small emergency stashes in a proven rigid 7-gallon jug.
Amazon $69.99$69.9914 gal$5Included - RomoTech Domed Tank 16 Gal (Natural)#2 of 11Full review
For a mid-sized translucent reservoir where seeing the level matters more than the price per gallon.
Amazon $143.99$143.9916 gal$90.8 in. outlet - RomoTech Domed Tank 16 Gal (Black)#3 of 11Full review
The 16-gallon domed tank in opaque black, for outdoor use where blocking light keeps algae down.
Amazon $157.99$157.9916 gal$9.870.8 in. outlet
Best Mid-Size Water Storage Tanks
- WaterPrepared 35 Gallon Utility Tank#1 of 8Full review
For a portable 35-gallon drinking-water tank that rides in a truck bed or trailer.
Amazon $157.99$157.9935 gal$4.51Included - Reliance Aqua-Tainer 7 Gallon, 4-Pack#2 of 8Full review
For camping and small emergency stashes in a proven rigid 7-gallon jug.
Amazon $149.99$149.9928 gal$5.36Included - RomoTech Domed Tank 30 Gal (Black)#3 of 8Full review
For a 30-gallon opaque square tank with a 5 in. fill lid and an NSF-certified resin.
Amazon $206.50$206.5030 gal$6.880.8 in. outlet
Best Large Water Storage Tanks
- WaterPrepared 55 Gallon Stackable Tank#1 of 6Full review
For a household that wants a ready-to-use 55-gallon emergency tank with a spigot, at a premium over a bare drum.
Amazon $319.99$319.9955 gal$5.82Included - RecPro 100 Gallon RV Fresh Water Tank#2 of 6Full review
For a fixed 100-gallon potable tank in a camper, bus or off-grid cabin.
Amazon $299.95$299.95100 gal$30.5 in. outlet - RecPro 65 Gallon RV Fresh Water Tank#3 of 6Full review
For a fixed 65-gallon potable tank in a camper, bus or off-grid cabin.
Amazon $249.95$249.9565 gal$3.850.5 in. outlet
