While it may seem unnecessary at first, there are many uses for a 100 gallon water tank. Some people may need a 100 gallon RV water tank for camping or a 100 gallon water tank for pressure washing. Some may just want to make sure they have a large supply of clean water in case an unexpected emergency happens. Whatever your reason, we’ll take a look at some of the top 100 gallon water tanks on the market today and provide the pros and cons so you know the best choice for your family.
Need a 100 Gallon RV Water Tank?
Since having a 100 gallon water tank for your RV is one of the most popular uses today, that’s where we’ll start. While an RV will typically come with a water tank when you buy it, over time the tank can wear down and leak. So most people searching for a 100 gallon RV water tank are looking to replace one that’s already leaking (or about to). Some may also want one to have a backup on hand – just in case.
RecPro offers RV water tanks in all sizes, including 100 gallons. The RecPro 100 Gallon RV Water Tank is corrosion and rust proof. It’s made in the USA from durable, FDA approved polyethylene and its seamless design gives you the ability to rotate the tank to fit into place – stand it straight up or place it on its back. It also adds to the water tank’s stability: there are no unexpected leaks or seams to split open.
The RecPro 100 gallon RV water tank measures 81 x 11 x 26 inches. The walls are 1/8 of an inch thick and its inlet is 2 inches long with a 1.25 inch diameter.
While it is a top choice for RVs, you can also use this 100 gallon water tank for boats, livestock trailers or many other uses.
RomoTech 100 gallon plastic water tank
Another Made in the USA 100 gallon plastic water tank is made by RomoTech. Measuring 38 x 30 x 29 inches, this water tank is more square than the 100 gallon RV water tank from RecPro. While you could use this for an RV, most people use this one as a 100 gallon fresh water tank for watering plants and gardening. The outlet accepts a typical garden bibb faucet which you can then attach a hose to.
The heavy plastic water tank offers thick walls on the RomoTech that won’t bow when filled. The low drain hole means you get most of the water out when you’re finished.
Capturing Rainwater With Your 100 Gallon Water Tank
Another common use for a 100 gallon water tank is using it to hold rainwater which can then be used for non potable purposes such as watering plants. If that’s what you need, you should check out the VINGLI 100 gallon collapsable rain barrel. The top of this rain barrel has a two zipper lid and a water inlet filter to let rainwater from your gutters in. There’s a low spigot with a switch at the bottom as well as a another spigot for a bucket or watering can about 1/3 of the way up.
The VINGLI 100 gallon water tank is made from a PVC frame and anti-corrosion PVC mesh fabric. This allows it to be lighter weight and less expensive than some of the other water tanks we mention here, but keep in mind its primary purpose is as a rain barrel, not something you’d use for drinking or cooking water. It’s probably also not the 100 gallon water tank for pressure washing you’re looking for if that’s important to you. But it is foldable, portable and storable, so if those features are important to you, it’s worth checking out.
100 Gallon Water Tank for Pressure Washing Options
If you’re looking at a 100 gallon water tank for pressure washing, the question you need to answer is do you want to use a water pump or not? No, a water pump is not necessarily required to use a 100 gallon water tank for pressure washing as shown in this video:
The key when using a 100 gallon water tank for pressure washing without a pump is to make sure the valve on the water tank is as low as possible. It’s also ideal to have your water tank upright so that there’s more pressure pushing down. (the RecPro tank can do this) In the video, he’s using a 220 gallon tank which means more downward pressure, but a 100 gallon water tank should still work. The pressure washer should provide some suction as well. Make sure you don’t run out of water in your 100 gallon water tank while the pressure washer is on! Running a pressure washer without water can damage the machine. (your 100 gallon water tank will be fine)
Another option when using a 100 gallon water tank for pressure washing is utilizing a pump.
Using a 100 Gallon Water Tank With Pump
If you’re trying to find a 100 gallon water tank with pump, your best bet is to purchase one of the 100 gallon water tanks mentioned above and then purchase a pump separately. The manufacturing process for a 100 gallon plastic water tank is a lot different than the process for an electronic water tank pump. You want to go with the manufacturer that’s best at what they do.
The Shurflo water pump will connect to a 100 gallon water tank and provide you with 3.5 gallons per minute at 45 PSI. The check valve prevents reverse flow, which is important, and it only weighs about 5 pounds. One complaint people have about this water pump is that it’s noisy so you wouldn’t want to use it to take a shower when other people might be sleeping nearby. It uses 12 volts and you’ll need to wire it directly into your electrical system. It doesn’t plug into an outlet.
If you’re looking for a quiet option with a standard plug, there are a couple of Seaflo water pumps that will connect to your 100 gallon water tank with a hose on one end, suck it out of the tank and put it wherever you want. These range from 3.3 gallons per minute to 5.5 gallons per minute and from 45 PSI to 60 PSI. Plugs into a standard wall outlet with pre-installed power plug.
What’s the Best 100 Gallon Water Tank?
What do you think is the best 100 gallon water tank and/or water pump? Let us and our readers know in the comments below!
Last update on 2023-02-05 / Affiliate links / Images from Amazon Product Advertising API. WaterFilterly is user-supported. We might receive a commission on any purchase you make through clicking links on this page.