Best Water Powered Sump Pump Reviews in 2024

Top Pick

Liberty Pumps SJ10 SumpJet

  • Water Powered
  • 5.0 out of 5.0 stars

Zoeller 540-0005 FLEX Series

  • Water Powered
  • 4.5 out of 5.0 stars

Superior 92900 Submersible Sump Pump

  • 12V Battery
  • 4.5 out of 5.0 stars

Basepump RB750-EZ Premium

  • Water Powered
  • 4.0 out of 5.0 stars

Basepump HB1000

  • Water Powered
  • 4.0 out of 5.0 stars

Buying Guide for the Best Water Powered Sump Pump

If your home is susceptible to flooding, you likely have a sump pump in your basement or crawlspace. However, what if the power goes out and your primary pump fails?

If you're concerned about your home flooding during extended periods without electricity, a water-powered sump pump may be a more reliable option than a battery backup.

These devices can help give you peace of mind should disaster strike your area. You don’t want to be stuck in a situation where your pumps fail, and you’re left with tons of standing water that has to be removed.

We reviewed the best water-powered sump pumps, including how they work, what to look for, and why you may need one.

What is a Water Powered Sump Pump?

Overall, a sump pump is designed to remove water from any given area. These pumps are necessary for homes that have a flooding problem so that you can keep your areas dry at all times.

Most sump pumps operate using an electric motor and can either be powered by electricity or a battery backup. Water-powered sump pumps, on the other hand, need no such energy supply. Instead, these pumps use what’s called the Venturi Effect. This effect happens when water is forced through a narrow pipe. This will reduce the overall pressure but increase the speed of the water flowing through. In a sump pump, serves as a suction device that eliminates excess water without requiring electricity.

In order for a water-powered sump pump to function properly, a consistent flow of pressurized water is required. That means you have to connect to the city plumbing. Water-powered sump pumps won’t work in a localized system. In many cases, these pumps will use more city water than wastewater, meaning that you will run a high utility bill if it ever comes on.

Overall, these devices are usually installed as a means of providing a backup in case of a power outage. You should never try to rely on a water-powered sump pump for regular draining, as it can increase your utility bills substantially. City water is usually more expensive than electricity, and using excessive amounts of water can lead to system drainage.

Top 5 Water Powered Sump Pumps Compared

1. Liberty Pumps SJ10 SumpJet

In-Depth Review

When picking a water-powered sump pump, one thing that you have to consider is how efficient the system is. Since you’ll be using city water with your sump water, the pump mustn’t use too much in the process. Fortunately, this model from Liberty Pumps is one of the most efficient models out there.

With this unit you can remove up to two gallons of waste for each gallon of city water used, meaning that you can do a lot more without paying the price. Another thing that we like about this system is that it can work with a wide range of water pressures. It can activate when pressure is as low as 20 psi or as high as 100 psi, making it better than most other water-powered sump pumps out there.

NOTE: Pumping performance varies with inlet water source pressure and pumping head.

This pump has a built-in filter to ensure you don’t have to worry about it. Due to the fact that the water coming from your basement or crawlspace will likely be dirty, you don’t want that dirt or sediment clogging your line.

Finally, this unit comes with a check valve, which both prevents backflow and helps reduce the overall noise. Water-powered sump pumps can be quite loud when they kick in, so this can help out a lot.


  • Removes 2 gallons of sump water per 1 gallon used
  • Powered by your municipal water supply and requires no electricity to operate
  • Fully automatic, arrives completely assembled
  • Accepts 20 PSI up to 100 PSI inlet supply pressure
  • High-output flow rates
  • Adjustable stainless hose clamp for easy mounting
  • Built-in screen with removable foot valve
  • Built-in check valve at water inlet
  • UPC approved

Top Uses

  • Backup sump pump
  • Protect your basement in the case of a power outage


  • Compact efficiency design
  • Durable plastic construction
  • Flow rate of 19.8 gallons per minute
  • Works with inlet pressure between 20-100 psi
  • NPT inlet is compatible with most lines and valves
  • Built-in screen filters waste
  • Fully assembled, easy installation
  • Check valve included for less noise
  • Two-year limited warranty


  • In rare cases, the connectors may leak
  • On rare occasions, the system may not suck up wastewater

2. Zoeller 540-0005 FLEX Series

In-Depth Review

When it comes to water-powered sump pumps, Zoeller is one of the most common brands out there. Part of the reason why they’re so popular is that they make a system that’s easy to install, while also being highly reliable and rugged.

This pump is made of high-quality PVC and stainless steel parts so that you don’t have to worry about wear and tear over time.

One reason we like Zoeller Sump Pumps is that they are mounted above water. While this does add a little more complexity to the installation, it also ensures that the pump itself is not sitting in wastewater. This helps extend the life of the system and keeps it working properly.

Check out: Above Ground Pool Pump


  • Materials: PVC and Stainless Steel
  • Maximum Flow Rate: 20 Gallons Per Minute
  • Power Source: Water

Top Uses

  • Backup sump pump
  • Protect your basement in the case of a power outage


  • Durable PVC and stainless steel construction
  • Fast and easy installation
  • Sits high above sump to stay dry
  • Uses up to twenty gallons per minute


  • No backflow or shutoff valve included

3. Superior 92900 Submersible Sump Pump

In-Depth Review

This Superior Pump isn’t water-powered, but it is still a viable backup solution to your primary sump pump. Thus, if you like the idea of having a battery-operated secondary system, this is an excellent choice.

Overall, the pump is simple to install and works well when your main unit stops working. You can connect this pump to almost any deep cycle battery, although absorbed glass mat (AGM) versions are best.

This pump also comes with an integrated alarm so you will automatically know when it kicks in. There is also a mute function so you don’t have to be bothered by it either.

Superior Pumps are built to last. A thick thermoplastic housing protects all internal components, and this pump is built to last a long time.


  • 12 Volt Sump pump moves up to 1,380 gallons per hour
  • Pump will lift water up to 25' of vertical height
  • Tough thermoplastic construction; 10-foot cord length
  • Tethered float switch to automatically turn the pump on/off
  • 1-1/4 inch or 1-1/2 inch NPT discharge for high-capacity pumping
  • Engineered with quality components
  • 100% factory tested

Top Uses

  • Emergency backup sump pump
  • Power outage with flooding


  • Rugged thermoplastic housing
  • Built-in alarm with quiet feature
  • Integrated float switch
  • Battery charger included
  • Works with most deep-cycle batteries
  • Fast and easy installation


  • Battery not included
  • In rare cases, the alarm may continue even when the pump isn’t active

4. Basepump RB750-EZ Premium

In-Depth Review

If you want something that’s easy to install and comes with all of the right components, then you will need the Basepump RB750-EZ Premium Pump. This model is an extremely reliable, very powerful, water-powered backup sump pump system.

One of the most crucial elements is the backflow check valve, which keeps the wastewater from flooding back into your pipes and creating a mess in your home’s plumbing.

This Basepump model comes with all of the necessary installation components. It even comes with an extra-long cord for the float switch. All the connectors and mounts included with this model ensure a quick and easy setup of the pump.

Since this model is ceiling mounted, it’s imperative that you have a long enough system so it will activate sooner rather than later. The float is also highly sensitive, so you don’t have to worry about any flooding.


  • No battery to wear out or maintain
  • No charger to plug in or monitor
  • Included plumbing parts save you time and money
  • Includes battery-powered high-water ALARM
  • Mounts on the ceiling, not in the sump
  • Works with radon-sealed systems

Top Uses

  • Emergency ceiling-mounted backup sump pump
  • Power outages and flooding


  • Durable metal and plastic construction
  • E-Z installation materials
  • High water alarm included
  • Extra long float switch
  • Mounts to the ceiling to stay dry
  • Brass check valve prevents backflow
  • Shutoff valve included


  • Still needs PVC pipe to connect to the water system
  • In rare cases, connectors can leak

5. Basepump HB1000

In-Depth Review

Our final water-powered sump pump is this upgraded model from Basepump. While the 750 version is great for most households, the HB1000 is designed for locations that have to worry about a lot of flooding. One thing about these kinds of sump pumps is that they won’t operate with the same efficiency as your motorized version.

Thus, if your regular pump fails, you may still be at risk of flooding because your backup isn’t removing water as quickly. If you experience heavy flooding and you want to be sure that your backup pump will be closer to what you have already in place, the HB1000 can provide you with peace of mind.

That being said, it will have to use more city water in the process, so be aware that your utility bill can be a lot higher. Nonetheless, this system is more efficient than the 750, and it can work with pressures up to 150 PSI.

As with all Basepump models, this unit also comes with a high water alarm. This alarm is battery-operated, and it will kick in if your space is flooding faster than the pump can remove the water. This way, you can act accordingly.

This is the most reliable & trouble-free float system on the market and it works with radon-sealed systems.


  • Highest pumping rates in the industry
  • No moving parts to break and no maintenance is required
  • No battery to maintain; No charger; No electricity
  • Includes battery-powered high-water ALARM

Top Uses

  • Emergency backup sump pump
  • Power outages and flooding


  • Rugged metal and plastic construction
  • Stays dry by mounting to the ceiling
  • Battery-operated high water alarm
  • High-efficiency operation
  • Uses up to 10 gallons per minute
  • Maximum pressure of 150 psi
  • Extra long float switch


  • May require professional installation

How to Choose the Right Water Powered Sump Pump

Flow Rate

As with any pump, one of the most critical elements is how much water it can move at once. While water-powered sump pumps won’t be as efficient or as powerful as electric models, they can still do an excellent job of getting rid of excess waste.

One thing to consider when choosing this type of sump pump is how efficient the flow rate is compared to the water coming in. Since you have to use city water to make it work, you want to be sure that your system is taking out more than is coming in.

For example, if you can find a pump with a 2:1 ratio, that will help you save more on your utility bill when the pump is in use.

Pressure Settings

Since water-powered sump pumps have to use pressurized water to operate, you have to pay attention to the water pressure in the system. Ideally, you will want a model that can accept both low and high-pressure flows so that it won’t have any trouble turning on when necessary.

You’ll want to pay attention to the minimum and maximum pressure settings that will activate the pump. The greater the range, the more versatile and easy to use it will be.

Also, if it can turn on with little pressure, you may be able to save money on your utility bill. One thing to keep in mind, however, is that lower pressures will remove less water, so your system will be less efficient.

Quiet Check Valves

While this is not part of a basement sump pump itself, it’s usually a good idea to get a quiet check valve as well. When the pump activates, you will hear some loud thunking noises as the water turns on and off. If the system is running for an extended period, this noise can become more and more irritating.

Having this valve in place will lessen the impact of the water, enabling you to get the same performance without constant interruption. Just be sure that your check valve is compatible with your pump before installing it.


As you can imagine, your water-powered sump pump for basement won’t be used very often (at least, it shouldn’t be). Thus, it’s imperative that you get a model that won’t break down over time.

For example, if you get a metal sump pump, it could erode or rust if you’re not paying attention. Metal sump pumps can be excellent if they have a corrosion-proof coating.

Otherwise, we recommend plastic or PVC material. It will stay in pristine condition for years, and it’s durable enough to withstand high pressures.

Who Needs a Water-Powered Sump Pump?

Because a water powered sump pump backup relies on city water to work, you have to make sure that you can connect it to your home’s plumbing. That also means that if you have a self-sufficient system (i.e., you use well water), this type of sump pump is not right for you.

Self-contained water systems can deploy a water-powered sump pump if they can connect the pump to the city water supply. However, in these cases, the cost of doing so can be quite prohibitive. Instead, it will be better to invest in a battery backup, as well as a generator so that you can be sure to have the pump running for longer if the power does go out.

The ideal candidate for a water-powered sump pump is someone who has easy access to city water and wants to ensure that they’re prepared for anything.

Also Read: Best Submersible Pump

Final Verdict

When it comes to the best water backup sump pump, we have to say that our top pick is the Liberty Pumps SJ10. We like that it has such a wide range of water pressure activation, as well as a high-efficiency system. Overall, this pump is expertly constructed, and it will serve as a reliable backup for years to come.