How to Find and Fix RV Water Pressure Problems

Posted on 01/03/2022 by RV Repair and Maintenance, RV Products, Parts and... 149
How to Find and Fix RV Water Pressure Problems

RVing can be an absolute adventure, but for this, every RVer ensures that he has a steady water supply in his home-like vehicle and that his RV plumbing system is working correctly. We all experience water pressure issues at some point while RVing. Sometimes, the water pressure within the RV changes unfavorably, causing drops of water to come out of the faucets. This may happen in the kitchen or in the shower. It is also possible for the water pressure to get too high sometimes, which is another problem.

Water Pumps and RV Water Pressure

The RV water pump is a useful device for a number of reasons.

To begin with, if your campsite does not provide water or you like to boondock, then you'll have to use a freshwater tank and an RV water pump with a regular water supply. When you want to enjoy camping in the middle of nowhere, you can have access to water in your RV since it is powered by its 12-volt system.  However, you can do much more with a water pump.

Also, the water pump is needed for your bathroom, shower, kitchen, or any other water outlet in your RV.  If your RV's pump is faulty, it could adversely affect your water pressure.  In such a case, repairing or replacing your RV pump will be your best option.

If you own one of the newest RV models, you will have an RV water pump already installed. Your water system and the pump will work efficiently for your daily needs. You may have problems such as low water pressure when the pump stops working due to wear and tear. 

How Do RV Water Pumps Work?

The RV water pump supplies water from a local source to the faucets, showers, bathrooms, sinks, and other water points installed in an RV. In order for the pump to function, you need electricity and enough water in your campervan water tank. If you want your RV's pump to start working, you need to turn on the pump switch. 

An RV water pump offers two benefits. You can use it as your primary source of water or as a backup in case the external water supply has too little pressure. Freshwater will be pumped from the fresh water tank to the lines through the water pump.

How to install an RV water pump

You can easily fix this machine in the RV by following these instructions if you need a new water pump. 

  1. During the installation of an RV water pump, water must first be drained from the tanks. Drain all water from the tanks. To release all water from the water tank, connect a hose at the base. You can empty the fresh water tank with the drain cock by opening the drain valves in RV freshwater tanks. You will then need to disconnect your water pump from the tank.

  2. A second step involves removing a nonfunctional or old water pump. Be sure to disconnect all the wires connected to the pump. You should also disconnect the hoses connected to the pump. Remove all screws and bolts as well. Once this is done, the pump can be removed.

  3. Installing your new pump is the third step. Install the new pump and tighten all bolts with a screwdriver. At this point, the inlet and outlet water hoses should be connected with clamps.

  4.  The fourth step is to connect your water pump to a water tank and electricity. You'll need to fasten everything tightly. You will also need to connect the pump to the RV battery.

  5. It is important that you test the newly installed water pump, just as we do after fixing a problem. Start the RV to check if the pump is working properly. It might make a noise. Otherwise, the electric connection might be faulty. Additionally, you need to check your pipes and connections for water leaks. If you have everything installed correctly, you can fill the tank with water, turn the pump on, open a faucet and you will have water.

RV Water Pressure Problems

RV adventures are full of outdoor fun, but if you experience low or high water pressure problems in your RV, you may find it difficult to perform necessary chores such as dishwashing or bathing. If you find yourself in a situation like this, you should be prepared to handle it professionally. Knowing exactly what causes low and high water pressure is the first step. It is then that the problems can be resolved.

Why is RV water pressure low?

If your water pressure is low, your faucets and showerheads will produce water at a lower volume and speed than they usually would. If you want water, need to brush your teeth, or need cooking utensils urgently in an RV, this situation can be highly inconvenient. Having water drip from your faucets, even if it's not urgent, is frustrating.

The water pressure in the gas or electric water heaters is low, for example. You may find it frustrating when you want to take a hot water shower or wash greasy dishes.  In this case, you may need to have your plumbing, including a hot water heater, toilet drain, holding tanks, or hot water tank drain valve inspected.

 How to check and fix RV water pressure

1. Check the Hose Line

Low water pressure may be caused by a bent hose. To get enough water for your needs, you just need to fix any problems that might exist.

2. Make sure the campsite has enough water pressure

Measure the water pressure at the campsite with a pressure gauge. The low pressure could be caused by low water pressure at the campsite.  In spite of the fact that a pressure regulator can help maintain constant water pressure, it does not have the power to boost the flow of water. Your RV can be fixed by using a booster pump that increases water flow.

3. Check the Water Filter

In order to get a sufficient supply of clean drinking water in your RV, you must install a water filter, but this can also cause low water pressure problems. It may affect how water comes into your faucets and fixtures.

You may need to replace your water filter first if the low water pressure is caused by clogged filters. This will ensure both good water pressure and clean water.  As an example, if you need to replace your water filter or any other plumbing parts such as vent pipes, toilet vents, drain vents, wet vents, or kitchen sink vents, you can get everything you need online by searching "Plumbing Parts".

4. Check the Faucets and Showerheads

When you lose water pressure in a single faucet or shower, this may be due to a problem with the fixture itself, not the water supply. In order to do this, you must remove the faucet or showerhead and check for dirt or debris. The most common cause of a clogged sink is a clogged aerator or a clogged cartridge. Remove the cartridge and clean it thoroughly. 

5. Find the Leaks

RVs may experience pressure problems due to leaks or broken tubes. You must run a leakage test if the connected water valves are fully open. You can fix leaks by tightening again, using patches, sealants, or replacing them. 

6. Check the plumbing vents

Your RV's plumbing system needs a plumbing vent, also known as a vent stack or plumbing stack, to regulate air pressure. The plumbing vent pipe for plumbing air vents is vital to remove gases and odors from RVs, as is the drain valves and pipes for removing wastewater. Check the drainage pipe on the roof to ensure it is properly functioning.  The roof of the plumbing vent is an important part of the system and may need to be replaced. Invest in quality pipe vents and associated accessories.

An RV plumbing system also consisted of air admittance valves. AAV valves prevent the formation of a vacuum in the plumbing system, which may result in water pressure issues.

Why is RV water pressure high?

High water pressure will also put a lot of strain on your RV's plumbing system since it will exceed the required level. It can damage pipes or cause leaks. A pressure regulating tool is needed in this situation. You can use this tool to adjust the water pressure to your liking.

How to maintain safe water pressure in your RV

Your RV's water plumbing and parts may need to be repaired or replaced depending on its model. It is recommended that you have a water pressure somewhere below 60 psi. 


If you want to maintain perfect water pressure in your RV, make sure your water pump is in good condition. If it is outdated, you can install a new water pump yourself using the above instructions. To choose an RV plumbing part, opt for a brand you can trust.  Another reason for low water pressure could be air in the pipes, dirt in the fixtures, a bent hose, or a clogged water filter. To solve a problem, it is necessary to identify the problem exactly.

If you need a new plumbing part such as a plumbing vent pipe, a wet vent, a floor drain with a backwater valve, or any other plumbing accessory, you can visit an online RV Part Shop.

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