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The Best Marine Fresh Water Pumps for 2023

Fact checked by William Hart

All of us are certainly aware that water is quite essential for us to live a comfortable and healthier life. Recreational vehicle owners and boaters also highly consider this doubly important. Boating adventures and road trips seriously require a steady and reliable water supply system for bathing, and to stay hydrated. This is why investing in the best marine fresh water pump is critical.

Having a powerful and dependable fresh water pump can guarantee your water pressure is high, and your plumbing remains safe and sound. Aside from delivering water to your vessel, camper or RV’s showers, faucets and sinks; a functional water pump is easy to install and operate.

best marine water pump

Furthermore, you can rely on these water pumps because they operate without much noise, yet they could serve their functions best.

If you are having second thoughts of the right marine fresh water pump for your boat, RV or camper, this post can provide you with the necessary information that you need to consider when shopping for one.

Continue reading our product reviews, buying guides and other marine fresh water pump-related information discussed in this article. In doing so, you can make a confident and well-thought-of final purchase decision. Hopefully, your choice will help you obtain a consistent water supply that would make your outdoor adventures even more fun and exciting.

Top 3 Products

Best Overall

Shurflo 2088-554-144


Compact & Mighty

Bayite Water Pump


Most Durable

Amarine Made Water Pump


Table of Contents

Best Marine Fresh Water Pump Reviews

1. Shurflo 2088-554-144 Fresh Water Pump

This fresh water pump is a practical option for recreational vehicles or any other water delivery usage. If you prefer a more versatile, efficient and easy-to-setup pump, this unit is a perfect pick. It can guarantee greater water pressure and comes with high gallons per minute capacity.

Marine water pumps like this version are reliable to use. They can ensure flushing and more exceptional flow while in use. The water lines connect instantly with much ease. Additionally, they are adept at pumping and operating in a quicker and smoother approach.

For boaters who go for convenient and lightweight design, this option is a must-have. It makes the assembly process less painful. Fundamentally, it is perfect for those who require a more secure fix of their current model. It comes with thermal protection features and is engineered with a three-chamber.

This device features a positive displacement set up to pump three and a half gallons per minute. It switches on naturally as pressure is minimal and halts when a pre-set pressure is obtained. This can self-prime by up to 9 feet and would pump on demand. So, you don’t need to worry about skipping showers or leaving toilet water sitting.

Undoubtedly, this brand is one of the most favorite picks because of its superior flow mechanics and outstanding pressure. It works more efficiently in carrying water to your sink, toilet or shower.

Regardless, take note that this unit seems not quieter as compared to E65 versions. But, it is still more excellent than average in terms of silent operation.
  • Capable of offering more superior water pressure
  • A cinch to assemble and ensures more versatility of use
  • Works more efficiently and ideal for RVs and other water delivery applications
  • Comes with high gallons per minute that guarantees flushing and more excellent flow during use
  • Does a great job of pumping and running quickly and smoothly
  • Not as silent as E65 versions
Overall, this Shurflo marine fresh water pump is a worthwhile investment, as Shurflo is famous for being one of the best brands that engineer reliable fresh water pumps.

2. Bayite 12V DC Fresh Water Pump

This fresh water pump is a good value for the money because it can guarantee limitless uses. Installation is not a painful task for you to deal with, as it is lightweight and comes with excellent fittings. Maintaining the device is also smooth sailing, too, even for novices. Its suction power is good enough to execute its functions. Thanks to its electro-coating feature, it can resist corrosion.

What is more, since this unit comes with sealed switches, it can ward off the dust from entering and avoid incidental moisture. This is a self-priming device, and you can easily mount it above the water tank.

If you are one of those who opt for silent operation, this pump can be your go-to. It has soft rubber feet that provide pump cushions. Furthermore, it executes a good job of minimizing vibrations. If you are able to set it up properly, this model can provide you with extra protection.

This device is a sterling choice because it contains a thermal breaker that automatically cuts off every time you no longer use it. This is made possible by the integral pressure switch. As you can see, this option can help you save more since it merely draws low current.

The precision ball bearings are fused into the unit’s motor. These help avoid corrosion. So, the unit can last long because it can be protected from potentially hazardous elements.

For all that, please be reminded that while this pump works quite well, the continuous and maximum water flow it can offer only amounts to six hours. See to it to take this drawback into account before purchasing one for your boat.
  • Can be used for several different purposes
  • Installation and maintenance is plain sailing.
  • Features an A1 suction power
  • Can inhibit corrosion, dust and moisture penetration
  • Self-priming and can be mounted on top of the water tank
  • Can only provide a maximum of six hours continuous water flow
On the whole, this fresh water pump for boats is small yet comparably functional and affordable than its competitors. Without question, it’s an economical choice that you won’t get disappointed with.

3. Amarine Made Water Pressure Diaphragm Pump

Investing in a top-drawer 12-volt marine water pump must be taken seriously. As you know, some units are defective and incapable of delivering what they are made for. Fortunately, this device from Amarine Made is not as costly as other brands, but it can work better than expected.

If you prefer a water pump that is practical to serve several different purposes, then this product is a superb choice. It can ensure the noise-free operation and is not susceptible to cause leaks and bleeding off issues. Since it features soft rubber mounting, you can position it anywhere you like with much ease.

In addition to this, this device comes with an automatic pressure switch. This means that you could finally say goodbye to tedious work. It does not pose any serious concern whether you use it for spraying sanitizer, water or insecticides.

What is amazing about this option is that since it includes a 35 PSI pressure switch that starts and halts automatically based on your usage. In short, the switch can detect if your water demands exceed 35 PSI, so it will stop the system before restarting it when things return to normal. Thus, it allows you to stay relaxed when going on your adventures.

Besides, the lightweight, compact and small size features of this pump are not commonly found in other options. Hence, this impressive addition is surely worth searching for. This unit will also be functional for agricultural applications. Moreover, it is a piece of cake to carry around, specifically when travelling with your RV or vessel.

Be that as it may, the volume that this device offers may be less for some heavier uses. So, be sure to decide what type of application you’ll use the unit for before buying one.
  • Can be used for many different purposes
  • Not prone to bleeding off or leaking
  • Comes with a soft rubber mounting
  • Does not produce unnecessary noise when running
  • Equipped with an automatic pressure switch
  • The volume it provides might be not sufficient for some heavier applications.
Ultimately, this marine water pressure pump is a standout choice. It can surprisingly provide reliable performance in many different applications.

4. SEAFLO 55-Series Diaphragm Pump

This 12V marine pump is a great investment that boaters can consider for their vessel. Some of the unique features it has include thermal and ignition protection, certified robust pressure switch, 12V and self-priming functions. Besides, it comes with 60 PSI and 5.5 GPM capacities. It is a sure investment because it offers a four-year warranty.

This is one of the most recommended units because it can offer superior volume water flow with minimized pump cycling. Indeed, it can guarantee a smoother flow since it comes equipped with a five-chamber diaphragm. It could also operate dry without getting damaged.

If you prefer a more reliable pump performance, this version will work excellently for your needs. It also features an automatic demand water system pump that has an integral pressure switch. This switch begins functioning and shut the pump off automatically when the spigot is opened and shut.

Luckily, this unit is not complex to set up, service and winterize. It becomes more dependable to use once paired with an accumulator tank made by SEAFLO. Besides, since it has a heavy-duty pressure switch, this can switch the pump on and off more on demand than other similar products.

Such a device is capable of moving an ample amount of water in no time. It will also work exceptionally with a pressure washer. And, it operates well without generating too loud noises. Overall, this version is a good upgrade from the factory unit.

However, unlike other options that have removable in and out nozzles, this water pump comes with fixed screw-on type connectors. So, it is a bit tricky to swap screw type for the push on hose type of nozzles. Be sure to check this minor downside before making the final shopping decision.
  • Designed with 12V and self-priming features
  • Includes a certified heavy-duty pressure switch
  • Supported by a four-year warranty program
  • Made with thermal and ignition protection features
  • Comes with 60 PSI and 5.5 GPM capacity
  • Comes with a fixed screw-on type connectors
In a nutshell, this unit can offer a significant difference in terms of its heavy-duty pressure switch. So, you can rely on its superb performance.

5. Jabsco 31295 Series Water Pressure Pumps

This Jabsco fresh water pump is highly acclaimed for its dry operation and smooth flow capability. The materials used for its construction can withstand corrosion. It does not operate loudly to the point it is annoying to hear. Moreover, it does not require you to use an accumulator tank.

Likewise, since it has an integral bypass feature, this can significantly help reduce pulsation. If you want a well-engineered unit, this option is a must-try. It exhibits rigid build, making it reliable to offer superb performance. And, it is nice to know that such a device can last an extended period.

The pump head is properly sealed from the motor. Generally speaking, the drier you keep this unit, the longer it would last. The pump body features rubber mounting feet, while the housings and case are premium quality plastic. They also come with stainless hardware for assembly. The motor shaft is made of solid stainless material, too.

Many boaters who have tested this unit claim that it works best for a 30-feet vessel with shower and sink. It can provide an ample amount of pressure and shuts automatically when you don’t use it. As for its pumping capabilities, it executes its job well and functions without any hiccups.

Sure thing, this model would be a possible replacement for older water pumps. It is a breeze to set up and comes with more advanced features than the previous versions.

However, since the plastic cylinder that surrounds the body of the motor is not fully sealed, moisture can enter at the seam between the pump head and the body of the engine. Therefore, you’ll need to put a silicone tape or a bead of sealant around the joint to avoid the penetration of moisture.
  • Guarantees soft noise while running
  • Can provide a smoother flow
  • Does not require the use of an accumulator tank
  • Built using corrosion-resistant materials
  • Features a stainless motor shaft
  • The plastic cylinder surrounding the motor body is not completely sealed.
Right to it, this unit is a good bang for your bucks. This is a second to none option for a sailboat fresh water system.

6. Seaflo SFDP1-012-035-21 Water Pressure Pump

The good news is that investing in peerless marine freshwater pumps does not need to be exhausting. Several reliable manufacturers engineer premium quality units for you to select from. Essentially, one of the brands that you can trust in is SeaFlo.

This product is ideal for consumers who do not have extraordinary water requirements. Such a unit is practical for those who own recreational vehicles with up to three water fixtures. You can also use it when transferring, spraying and filtering water. This is reliable, too, in terms of sucking liquids from below the ground, and even in moving the water to your faucets.

Luckily, you won’t have troubles mounting this device on top of the tank because it is self-priming. Not only that but it also has an integral thermal shield that safeguards the motor against any sorts of damages. Moreover, this is a risk-free system that can operate dry. So, you can relax well as it does not pose any hazard to users.

The 35 PSI capacity of this system is useful since the pump stops automatically when it exceeds the limit. Its sturdy pressure switch works well for its function. It restarts in an automatic mode the moment the water pressure returns to normal levels. Besides, the manufacturer supplemented this pump with soft rubber mounts that work great in averting vibrations from annoying your sensitive sense of hearing.

Even though there is no doubt about the quality of this system, take in mind that it can only generate moderate water output. So, if you have unusual water requirements, this option might not be the right pick for your needs. Make sure to be well aware of your water needs before getting one.
  • Equipped with an integral thermal shield that safeguards the motor
  • A practical alternative for many different uses
  • Made with an exceptional self-priming attribute
  • Comes with a compact, lightweight and portable design
  • Features an upper-pressure limit of 35 PSI
  • Does not produce considerable water output
All in all, this fresh water pump is a valuable investment for those who require moderate water output. It is dependable to fulfil its duties.

7. Lippert Components 689052 Water Pump

This unit contains a super robust motor that comes with corrosion-resistant bearings. So, this could last long even if you frequently use it for outdoor applications. It is also electro-coated, which implies that it could sustain a well-polished appearance even if left exposed to various elements. Such an attribute is rarely found in other fresh water pumps nowadays.

In the same way, it features a total of 50 PSI and 3-gallon per minute flow rate. Hence, it could suffice the water needs of typical amenities on RVs. Besides, this device can put up with dry running, so it can stay in good condition even if your tank eventually runs out of water. And if you have a very sensitive ear, this won’t annoy you much because it produces less noise while in use.

Thanks to this system’s thermal breaker feature, it can halt the operation if there is a hazard of overheating. So, you can be at peace that the motor won’t be damaged. The breaker resets in an automatic approach after the temperature goes back to the normal state. You have no major tasks to deal with, so you can simply enjoy your adventure.

You will be impressed by the fact that this system can offer a steady water flow to your recreational vehicle. As compared to other available alternatives, this option is worth considering because of its distinctive and useful attributes.

The package already contains a couple of connectors and a screen filter. This product also has a sturdy internal check valve that resolves backflow concerns. As for the installation process, this is a bolt-on version, so it is easier to handle and set up. Even if it is your first time to install one, you won’t be stressed out.

Nonetheless, you will need to deal with some additional expenses since the hardware required for the installation are not included in the package.
  • Certified well-engineered and resilient to any sorts of damage
  • More reasonably priced than other available options
  • Comes with an incredible suction strength
  • Straightforward to install
  • Can satisfy the water requirements of common amenities on RVs
  • Hardware needed for assembly must be purchased separately
In summary, this marine saltwater pump can deliver its promise in a gratifying approach. You can bank on it, yet it won’t force you to spend extravagantly.

8. Happybuy RV Water Pump

Are you wondering about the most reliable boat fresh water pump troubleshooting alternatives? With exhaustive research, you can find the most suitable option that would cater to your RV or boat’s water requirement. This pump is worth your attention because this won’t break the bank yet it can work like a charm.

Among the available fresh water pump options, this brand is the best in terms of flow rate. It is capable of pumping the unit with a 5.5 gallon per minute flow rate. This is adequate to satisfy the water needs of small-sized households and recreational vehicles. Looking at the device closely, you’ll see that the manufacturer uses premium quality materials for its overall build.

Not to mention, the main body of the unit features one-piece plastic that won’t get damaged anytime soon. The motor is heavy-duty and is accountable for the remarkable water output that this system provides. It comes with a water-resistant cover; that is why it can extend its shelf life.

Apart from these, the unit has a fully sealed pressure switch that allows it to operate in rugged conditions. There are also rubbing mount feet that are ideal for eliminating irking noise, yet these are superb at averting corrosion from rising from below.

Finally, the automatic pressure switch opens and closes in an automatic mode the moment you open or shut the nozzle. Meanwhile, the mechanical shut-off characteristic of this unit switches off as soon as the motor begins to overheat. Isn’t that a very valuable attribute to have?

Nevertheless, some users were not satisfied with the quality of the nozzle. It seems not good for rugged use, so you have no choice but to replace it with a better quality nozzle.
  • Can offer a total of 5.5 gallons per minute flow rate
  • Comes with an automatic shut-off attribute
  • Features an internal thermal shield for much-added motor protection
  • Equipped with fully sealed pressure switch
  • Made with a waterproof cover to extend its shelf life
  • The nozzle is not exceptionally high quality.
To conclude, if you are searching for a fresh water pump that does not weigh heavily on your wallet, yet it could meet your water requirements, go for this option.

9. SEAFLO 42-Series Water Pressure Pump

Are you planning to purchase a reliable and efficient marine engine water pump? Then, it is high time to meet the latest addition to SeaFlo’s diaphragm pumps. This unit is adept at sustaining raw power and could also adapt to conditions where a significant flow is unnecessary.

Since this pump comes with a compact design, it is useful for tight spots. It is capable and can be configured with various types of the inlet. Each comes with unique fittings that can suit any application. There is no need for an accumulator tank because this device contains an internal bypass that lessens pump cycling. This version is applicable for both high and low flow purposes. It is self-priming too and can operate dry without causing any harm.

This model is a good option for those who prefer noise-free operation. It comes equipped with an integral check valve and a four-year warranty program also supports it. Such a unit can generate great pressure, and it also features a pressure shut-off switch that works efficiently and consumes minimal power.

Likewise, this pump includes the required fitting to screw on the device and mount the flex line to the water tank and spigot. The on-demand attribute of the pressure switch conveys that you have pressurized water at your disposal. This is a wonderful pump that never fails to serve its purpose.

The only thing that would somehow make you slightly irked about this water pump is the unresponsive customer service support. It takes a while for them to respond to customer’s queries and concerns. I hope contacting them isn’t a bit of a challenge.
  • Capable of producing high pressure and equipped with a pressure shut-off switch
  • Compact design yet works powerfully for its functions
  • Sustain raw power and adapt to conditions where the considerable flow is not required
  • Made with an internal bypass that works efficiently in minimizing pump cycling
  • Self-priming, could execute its function under low and high flow
  • Contacting the customer service support is a bit annoying.
To round off, this fresh water pump is a decent alternative for the price. If you opt for a pump that can work efficiently, yet does not consume more power; then this is a must-have!

10. Amarine Made 21 Series Water Pressure Pump

You can highly regard this unit as one of the best marine water pumps available today. Many consumers who have used this device have found it a practical option because it can reduce costly expenses. This is a great pump that can work for many different applications. It can operate dry; it is self-priming and can produce a total of 1.2 gallons per minute.

Some of the vital features it has include ignition and integral thermal protection, 35 PSI pressure switch that starts operating and stops running in an automatic mode. This works best for transferring, spraying, dispensing, filtering and circulating liquids.

This device comes equipped with 3/8-inch barb ports. What is more, you can mount it on top of the water tank. It is smooth sailing to connect and does not require considerable power draw. Beyond that, it is a certified professional-grade pump and features a soft rubber mounting. You can practically use this device for RVs, caravans, as well as marine and agriculture applications. It works efficiently and can guarantee a low current draw.

Moreover, it is a certified awesome pump that works in a more robust mode even though it is small. With it, you won’t have a hard time supplying an outdoor sink and shower in your RV, camper or vessel. This unit is a reliable partner to have so you can enjoy your outdoor adventures even more.

Please be reminded that while this unit is a great value for the money and can deliver its promise well, the total output it can generate is only 1.2 gallon per minute. Hence, if you intend to use this for heavier applications, this might not suffice your requirements.
  • Perfect for a broad array of applications
  • Provides 1.2 GPM, self-priming and can operate dry
  • Equipped with an integral 35 PSI pressure switch that starts and halt automatically
  • Can guarantee several cost-cutting advantages
  • Contains integral ignition and thermal shield for much-added protection
  • It can only produce a total of 1.2 GPM output.
To finish off, this option is a supreme unit for those who opt for outstanding water pressure and ease of installation. It can work efficiently to whatever application you wish to use it.

11. OMMO 12V DC Fresh Water Pump

Searching for a first-rate electric water pump for boats won’t be intricate if you refer to tried and tested brands. While it is true that this unit is a new entrant in terms of on-demand water pumps, it becomes an instant favorite due to its superb attributes and utility. It is one of the thumbs-up alternatives for trucks, caravans, campers and other RVs.

Many consumers who have tried this water pump are stunned by its capability to offer limitless uses. It can promise a silent operation so that it won’t disturb your siesta time. It comes with several useful attributes like superior suction power, exhaustive thermal protection, plus a self-priming function. A four-year warranty offer even supports this device.

This pump features a reasonable flow rate of 2-gallon per minute and a total pressure of 85 PSI. You can connect it with outlet and inlet pipes so it could be useful for a wide ray of applications. What’s more, the package consists of an electric sprayer, sprayer fixtures and a vehicle-mounted sprayer. As a result, the unit can excellently supply steady water flow without incurring any damage.

This exhibits a rigid and durable built, and you can set it up using a couple of wire connections. Its premium quality construction makes it resistant to damages, so it is sure to last long. It also has an integral check valve that aims to inhibit reverse water flow.

Nonetheless, inspect the entire device first to see if it is fully sealed and shielded. Some users complained that they experienced minor leaking problems using this device. Luckily, this can be avoided with proper inspection.
  • Quite practical for many distinct uses
  • Does not generate loud sounds while in use
  • Features comprehensive thermal shield, great suction power and self-priming operation
  • Backed up by a four-year warranty program
  • Guarantees ease and convenience of installation and operation
  • Some users claimed that they encountered minor leak issues with this unit.
To top it off, if you prefer to invest in a solidly engineered water pump that won’t be a pain in the neck to set up, this alternative can be your best partner.

What to Look for When Buying a Marine Fresh Water Pump


Here are the important buying considerations you need to ponder on before making the final purchase decision.

  • The types of marine fresh water pumps.

It is critical to learn more about how each type of different marine fresh water pumps works. Some options come with 12V or 24V features.

12-Volt options can run silently. They do not take up more space and consume less power from the batteries than those with high voltage. However, they can only generate lower pressure, which means their water output or gallon per minute is on the lower side.

On the other hand, 24-Volt models are capable of offering more superior water pressure. These units can provide more dependable performance for an extended period. They are best for heavy-duty applications.

Even so, they especially require regular maintenance to execute their functions at a maximum level. These versions also use up significant amounts of energy; thus, they put more load on your batteries.

  • Installation and Size

Even if the performance of your chosen water pump is superb, you can’t consider it an excellent choice if it is troubling to set up. The same goes in terms of size. If the pump cannot fit in the provided space on your vessel, it will be considered as unworkable.

Pick options that are straightforward to set up without any external aid. Options that you can easily transport to the location where you plan to set them up as they are lightweight are ideal, too.

As for the size, take note of the significance of space. We recommend a water pump that you could tuck away instantly in a designated spot.

  • Pressure Rating and Gallons Per Minute

Since both of these features have a huge impact on your vessel’s water output, we have decided to classify them in the same group.

The pressure rating of the water pump tells the amount of resistance it could withstand. This can be found either through PSI or in bar units. On the other hand, GPM indicates the amount of water the pump could churn out in a given time. It is practical to search for versions that come with 1 GPM rating, at least.

On the contrary, if your water requirements are remarkably high, go for options that can offer a total of 2 to 3 gallons of water per minute. Take note that pressure rating plays a vital role in pointing out the performance of your water pump.

  • Noise Level and Suction Power

A vertical suction lift depicts the amount of water your unit requires when running to run more efficiently. Keep in mind that this differs from your water requirements. For example, if you require a minimal amount of water and your device does not need to apply much suction power, then you could do well with a unit that features little suction lift.

As for the noise level, opt for alternatives that are capable of operating with less noise. Five-chamber designs are ideal. Such a model is adept at keeping noise level low due to their sound dampening capabilities.

In case this is impossible, pay attention to the type of mounting that your pump needs. You might prefer the mounting type that utilizes a noise-absorbing system since this aids in allowing the unit to work silently.

  • Pump Cycle and Auto Switch

Such features help in making the entire operation of your water pump as safe as it can be. This is the reason why some consumers select these features, too, although they can add to the cost.

The pump cycle shuts down the device whenever the preset value is obtained. What takes place when the unit continues to offer a flow rate that is lower than the preset value?

This is where the pump cycle becomes more important. Its job is to re-activate the pump as soon as the reading lowers down than that of the pre-set value. It helps ensure that you obtain the maximum flow rate at all times.

When it comes to automatic switches, pumps that have integral automatic switches can provide more protection against overheating. This lies in the manner the automatic switch works.

The moment the water pump obtains the preset water pressure, the automatic switch would shut it off automatically. As you can see, this does not only shield the device but also keeps energy bills lower.

Other Important Factors to Consider


What is a marine fresh water pump?

A marine fresh water pump is generally a type of pressurized water system that comes with a simple design, operates silently and is low maintenance. Such a unit provides cold or hot water at the turn of a spigot.

This device is versatile enough to offer a trickle or a complete flow as per the user’s water requirements. It is essential to pick a model that is appropriate for the number of outlets on your vessel.

How does it work?

The most upgraded versions of fresh water pumps today come with a pressure switch that enables the unit to build up pressure in the freshwater line. So, whenever water is needed, and the spigot is opened, a current of pressurized water becomes available. The pump is responsible for switching on to sustain this pressure as required.

On the other hand, manual water pumps work by being switched on manually through an electric switch before the water is needed. This is because they do not have a pressure switch.

Bear in mind that fresh water pumps are often depicted by the number of outlets they could supply. Additional fixtures or taps in the device may bring about a reduction in flow capacity, extensive pump cycling, or unpredictable flow if opened at one time.

What are the different types of marine fresh water pumps?

Their application or usage designates marine fresh water pumps. They come in various types such as the centrifugal pumps, gear pumps and screw pumps.

Centrifugal pumps are mainly for transporting water through the modification of rotational kinetic energy to the hydrodynamic energy of the water flow.

The rotational energy commonly originates from an electric or engine motor. The water enters the pump impeller close to or along the rotating axis. This is sped up by the impeller, where it flows radially on the surface into a diffuser, or casing where it goes out.

On the other hand, gear pumps make use of the meshing of gears to draw water through displacement. These units are one of the most typical types of pumps for hydraulic water power applications.

Besides, they are broadly utilized in chemical setups to draw high viscosity fluids. There are a couple of primary variations such as the internal gear pump which uses inner and exterior spur gears, and the other one is the exterior gear pump that utilizes two outer spur gears.

Gear pumps are fixed or positively displaced, which implies that they draw a steady amount of water for every revolution. Some of them can work as either a pump or a motor.

Lastly, we have the screw pumps. These utilize one or more screws to transfer solids or fluids along the screw axis. Put simply, one screw rotates in a cylindrical cavity; hence, it can move the material along the spindle of the screw.

Why do you need a boat fresh water pump? (Benefits)

Marine fresh water pumps are great investments because they could guarantee several perks on your outdoor adventures.

Some of the benefits of owning reliable, superbly performing and functional fresh water pumps consist of the following:

  • Enjoy a steady supply of water for your RV or vessel.

Of course, road trips and boating adventures will become more relaxing and comfortable if you have a reliable water supply. If you have this unit aboard, there is no need to step out just to get water.

You can keep your tanks filled with a safe and adequate amount of water. Indeed, the pump will guarantee that your taps won’t run dry.

  • Such units are great space savers.

They generally come with compact, lightweight and portable designs. These features make them easy to store, ideal for tight spaces, and won’t use up much space in your boat or RV. In short, they won’t cause any discomfort or inconvenience.

  • Marine fresh water pumps are a piece of cake to set up.

As compared to complicated pumping units that might call for intricate installation procedures, fresh water pumps for boats makes the setup process a cinch to deal with. A simple look at the manufacturer’s handbook would provide you with what you require to link the device to begin pumping water to your toilets, taps, sinks, showers, and faucets.

  • Pumps purposely made for fresh water tanks are generally energy-efficient.

With these devices, it is unnecessary to worry about pricey water or electricity bills. Some of these units can efficiently operate on the RV or boat’s battery. Other options pump their power from an electrical outlet; however, most of these units are either 12V or lower, so they won’t give you a headache on electricity bills.

Frequently Asked Questions


What are the most trusted marine freshwater pump brands?

The safe bet to get the most reliable and functional fresh water pumps is buying from tried and true brands. So, before going to the local stores or shopping online, make sure to research the best manufacturers in the industry.

Below are a few of the most trusted brands that engineer premium quality fresh water pumps:

  • Shurflo
  • Jabsco
  • Bayite
  • SeaFlo
  • Amarine Made

Now that you’ve learned more about the leading brands, do not be surprised to uncover if most of them are priced higher than their competitors. This is already expected considering you are investing in top-drawer and superbly-performing units.

You may think you are spending lavishly at first; however, you will realize that they are cost-effective investments in the long run. So, you are still a winner even if you initially spend more. Undeniably, you never fail with reliable brands.

How to prime a fresh water pump on a boat?

Priming the pump can be carried out by filling the suction pipe and possibly the pump chamber with water. You can do so by pouring water through the exit spout of the hand pump; and at the same time, you’ll need to stroke the handle in an upward and downward approach.

How do you clean a freshwater tank on a boat?

Here are the guides when cleaning a freshwater tank:

  • Completely drain the fresh water tank.
  • Measure a teaspoon per gallon of bleach designed for aluminum, or you may use vinegar for plastic materials. Put this into the tank and pour fresh water until it becomes full.
  • Allow the solution to sit for one day to sterilize. After that, you can drain the water.
  • Finally, fill the tank with freshwater. Keep draining it several times until vinegar or bleach odor completely disappears.

How to install and use?

As for the installation and operation of marine fresh water pumps, the shape and size of your RV or boat, plus the number of water outlets you need, will figure out the size of the pump and the other vital components of the system. This will also determine the amount of pipework you will require.

You can refer to the manufacturer’s step-by-step installation instructions or schematic diagram provided in the package of the product you bought. This commonly depicts the usual system and demonstrates the way the components are connected.

Alternatively, you can watch some videos on how to set up a fresh water pump for your vessel properly. This is a very easy means that instructs first-timers about the techniques on how to set up and operate the system correctly.

How to care and maintain?

Proper cleaning, sanitizing and maintenance can extend the lifespan of your fresh water pump. So, after cleaning the device thoroughly, as mentioned above, you can disinfect the system. To get started, add a teaspoon per gallon of household bleach, or exactly 8 ounces per gallons of the water in the tank.

Please be guided that this type of bleach is purposely for sanitizing the system only, so it is unsafe for drinking purposes. Afterwards, pressurize the water with the device opened; however, you have to switch off the end outlets. Allow this solution to sit for roughly one day.

Lastly, flush the water with each outlet, beginning with the furthest from the unit. Perform this with all the outlets and do the flushing several times until the entire bleach odor vanishes. Store the device in a safe spot when not in use.


As previously mentioned, being able to obtain fresh water from tanks to the showers, sinks and faucets is a crucial system on any RV, camper or boat. Hence, it is vital to invest in the best marine fresh water pump and have it immediately installed on your vessel and RV.

The good news is that whether you need an electric or manual fresh water pump option, hopefully, this post can assist you to purchase the most appropriate unit for your applications. We aim to help you have the best system that will work best for your outdoor water supply needs. Besides, we also want to ensure that you can save more by considering our product reviews.

We have presented the unique features, pros and cons of each product. So, we hope that you can compare them carefully and decide which of them will best suit your water supply needs. It is our objective to help you narrow down your options and pick the most suitable one.

Do not forget to look through the shopping guides in this post, so you won’t end up wasting time and money. Since there are countless options available these days, being well aware of your needs, the best brands and must-have features and functions of fresh water pumps, and you can’t go wrong.

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