RomoTech 82123929 Horizontal Square Reservoir Water Tank, 100 Gallon, Made in USA, Natural Poly Tank For Non-Flammable Liquids, UV-Resistant, Ideal for Agricultural Use, RV Water Storage, White
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Availability:
Only 5 left in stock, order soon!
Arrives
Sep 25 – Sep 29
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Size: 100 gallon
Features
- 100 GALLON CAPACITY WITH CLEAR MARKINGS This horizontal square reservoir delivers a true 100 gallon water tank with molded gallon/liter marks; natural translucent poly shows level at a glance for potable water or other nonflammable liquids
- UV-STABILIZED, RUSTPROOF POLY TANK Mediumdensity poly tank resists corrosion and sun; built to live outdoors on farms, work sites, or trailers as a rugged water storage tank that wont warp, fade, or crack through seasons of daily service.
- EASY FILL & DRAIN HARDWARE Oversized 51/2" lid (5" opening), easytighten cap, and builtin bulkhead fitting with 3/4" NPT outlet speed refills, siphoning, and hose hookupsideal as a portable water tank or water tank for pressure washer.
- SECURE FOR MOBILE USE Molded tiedown channels accept saddle straps to lock this square water tank into a truck bed or trailer; a smart truck bed water tank or trailer water tank for mobile detailing, irrigation, and emergency prep.
- MADE IN USA, SPEC'D FOR TOUGH JOBS For nonflammable liquids up to 140F contact temp; easyclean plastic water tank with 100gal capacity and 3/4" NPT outletreliable as an RV water tank for camping, agriculture, or industrial tasks.
Description
In Indiana, a charge of medium‑density polyethylene enters a rotational mold and emerges as a precise 100 gallon water tank—a horizontal square reservoir designed for everyday reliability. The natural, translucent wall lets operators verify fluid level instantly, while molded gallon and liter markings provide an exact read. Outdoors, UV‑stabilized poly resists fading and warping; in service, it won’t rust or corrode. A 5‑1/2" lid (5" opening) and easy‑tighten cap simplify refills, and a built‑in bulkhead fitting with a 3/4" NPT outlet makes fast work of draining, siphoning, or hose connection. Molded tie‑down channels accept saddle straps so this portable water tank rides securely as a truck bed water tank or trailer water tank, ready for farm chores, job sites, and water tank for car detailing setups. Rated for non‑flammable liquids to 140°F, it serves confidently as a potable water tank, a rugged water storage tank, or an RV water tank for extended trips. Made in the USA, it’s engineered for cleanability, durability, and dependable performance wherever you need compact capacity and square‑profile stability.
Product Dimensions: 38 x 30 x 29 inches
Item Weight: 40 pounds
Manufacturer: RomoTech
Item model number: 82123929
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sep 25 – Sep 29
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 50 gallon
Solid build
Reviewed in the United States on July 30, 2026 by DS
Size: 100 gallon
I live off grid and use this to haul my water. I drive a van and this tank fits perfectly into the side doors. It is a great way for me to get 200 gallons without the need of a trailer. It looks great, the material is nice and sturdy. It functions as it should and has not gotten brittle from the sun as I was worried about.
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Reviewed in the United States on July 13, 2026 by John T
Size: 50 gallon
I use this tank to bring fresh water to our RV and I use a second tank to remove wast from the RV. The tanks are well made and a good value. Be careful to have a good pickup location when delivered, these takes are big. It took a few weeks to get them. I would make a few changes to the tanks that would fit my use case. Make the tanks 1.5" lower. I have the two tanks side by side in the bed of my pickup truck. I had to shave off the fins on the black screw in cap on the top of the tanks so I could place the flat rigid pickup bed cover on. I would also place the tank fill port a bit lower so there is less water in the bottom of the tank after it's drained. I got around this by screwing a right angle GHT thread hose adapter on the inside of the fill port of the tank and then pointing the adapter right angle face down. I hooked a $60 12 volt Seaflow SFDP1-030-045-33 pump on it. It now drains the tanks almost dry. I also placed the tanks on a 1/2" board at the front of the tank, elevating the front to drain it better. I will include a picture but understand this is not completed. I will end up with two pumps mounted in the bed of the truck wired to the battery with switches on the dashboard for each pump. I am now working on installing a macerator (Jabsco model 18590-2092) on the RV that will pump the wast to the 50 gal wast tank. One important part is the (BANJO Reducing Coupling, 1 1/2 X 1 In Fpt, Poly). I have not got this part yet but I think it will allow me to connect the macerator to a 1" pipe that will connect to a 1" port I will install on the RV dump tube. I will run a hose from the pump wast outlet to the wast tank in the pickup. I think the whole thing will cost less that $600. Now I will no longer need to pull my travel trailer to get fresh water or to dump wast. I use the pickup truck to do the transfer. In the picture notice I have wired the two take to the bed of the pickup with steel cable and turn buckles. I am a full time RVer so I went to the local post office and set up (with out cost) a general delivery account where Amazon can deliver. I should make a few other points, the upper port on the top of the back side of the tanks I cut my self. I bought the gray threaded port fittings from Az as well. If I were doing the again I think I would put the ports I cut in the take on the top near the back instead on on the back side this is because, you will notice I run the city water through a blue RV water filter before the fresh water enter the tank this filter removed the chlorine so we add a table spoon of Chlorox is no different then the chlorine used to chlorinate drinking water. I also purchase a low cost chlorine testing kit and test the chlorine level after we pump the water into the RV fresh water tank. By placing the port on the top of the tank it would make it easier to pour the chlorine into the tank. I could remove the large black cap form the top the take and put the chlorine in there but found it easier to not fold back the pickup bed cover that farther than shown in the picture.
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Reviewed in the United States on August 17, 2019 by Andrew Hopkins
Size: 30 gallon
Buen Producto!
Reviewed in the United States on July 18, 2026 by Victor B.
Size: 50 gallon
Fits nicely on the back of my side by side and the 55 gal capacity works well. If you’d rather not pull a gallon at a time. I would highly recommend the addition of a transfer station. For a couple hundred more, adding one pmade this tank even better for us.
Reviewed in the United States on October 28, 2025 by uneeq40
Size: 30 gallon
I needed this for tomorrow. The 3/4 female fitting doesn’t work with any 3/4 male fitting I tried four different hoses
Reviewed in the United States on August 22, 2026 by Anonymous
Size: 50 gallon
only reason it's not 5 stars is that it bulges a bit at the seam in the middle... not sure if that will be an issue eventually but it's pretty well made, used it all summer
Reviewed in the United States on February 13, 2026 by That Guy
Size: 50 gallon
Well, no leaks after a 13 months of continuous use. I have read through some of the poor reviews and it appears that "the seam leaking" be a common complaint, but my seam has held up just fine after being filled to the 40 gal mark most of its life so far. I use this tank for a drip feed system for my indoor grow room, and it stays filled around the clock. Being in a bedroom, I would know immediately if even a single drop leaked. I only store plant fertilizer solution in the tank at 6.0 pH - no concentrated chemicals or anything like that. When it arrived, I noticed a date and a name human written in permanent marker - which I assumed was an inspector. The plug did need to be tightened, but I would check the plug on any tank that I buy. For my future tank purchases, I will admit that I plan on driving to a local farm tank supply store since returning a very large item via shipping/freight is crazy difficult even on a good day.
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Reviewed in the United States on April 1, 2025 by J