Tips to Increase Water Pressure in Your RV

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Low water pressure is a frustrating, albeit common, issue in RVs.

Have you ever tried to rinse the shampoo out of your hair with little to no water pressure? (Hint: it’s not fun)

Surprisingly, troubleshooting the issue isn’t as challenging as you might think.

Step 1: Determine If the Issue Is the Campground Water Supply

If you’re connected to city water, start by checking the pressure coming from the campground.

If you have a water pressure regulator with a gauge:

• Check the gauge at the spigot
• If pressure is low before the water enters your RV, the campground supply is limiting flow
• Regulators do not increase pressure, so low readings here mean the issue is external

If you do not have a gauge:

1. Fill your freshwater tank at least halfway
2. Disconnect from the campground water hookup
3. Turn on your RV’s water pump
4. Open one faucet at a time, starting with the one farthest from the pump

If pressure improves when using the pump, your RV plumbing is functioning normally and the campground supply is the issue.

In either case, switching to your onboard tank and pump is often the simplest solution when campground pressure is weak.

Step 2: Inspect the Water Hose Carefully

Hose issues are easy to overlook and surprisingly common.

Even a single kink or tight bend can restrict flow enough to make pressure feel weak throughout the RV. Some hoses also collapse internally under low pressure, especially older or inexpensive ones.

Check the entire length of the hose for:

• Sharp bends or twists
• Sections pressed against the ground or concrete
• Tight coils that restrict flow

Straighten the hose fully and test again.

Using a drinking-water-safe RV hose also matters. Household hoses and worn RV hoses can reduce flow more than expected.

Step 3: Check the City Water Inlet Screen

Many RVs have a small mesh screen inside the city water inlet. That screen is designed to catch sediment from campground water, but it clogs easily.

When it does, pressure drops across the entire system.

To inspect it:

1. Disconnect the water hose
2. Shine a flashlight into the city water inlet
3. Look for debris, sand, or mineral buildup

If the screen is dirty, remove it carefully and rinse it clean. Once reinstalled, test your pressure again.

This step gets missed often and solves more pressure complaints than most people expect.

Step 4: Check the Water Filter

A clogged water filter restricts flow to every faucet in the RV. If your water pressure has slowly gotten worse over time, the filter should be high on the list.

Sediment, minerals, and fine debris from campground water build up inside filters and reduce flow long before they look dirty on the outside.

How to check:

1. Remove the water filter from the system.
2. Briefly test the water flow without the filter installed.
3. Compare the pressure at the faucet.

If pressure improves, the filter is restricting flow and should be replaced.

General guidance:

• Replace disposable filters every six months, or sooner if the flow drops
• Heavy sediment areas can clog a filter in just a single trip
• Carrying a spare filter prevents problems on the road

Step 5: Inspect the Water Pump and Pump Strainer

If pressure is weak when using your onboard pump, the pump system deserves a close look.

Most RV water pumps have a small inlet strainer that catches debris before it reaches the pump. That strainer can clog and reduce flow, even if the pump itself is working.

To inspect:

1. Turn off the water pump and disconnect power if needed
2. Remove the inlet strainer
3. Rinse out any debris and reinstall it securely

After cleaning, turn the pump back on and test the pressure.

A healthy RV water pump usually delivers steady pressure in the 40–50 PSI range. If pressure pulses heavily, surges, or remains weak after cleaning the strainer, the pump may be worn or failing.

Step 6: Check Valves and Bypass Settings

Partially closed or mispositioned valves are a frequent cause of low water pressure, especially after winterization or recent maintenance.

Common trouble spots include:

• Water heater bypass valves
• Winterization valves near the pump
• Manual shutoff valves added during repairs or upgrades

A valve that is not fully open can restrict flow to the entire system. Verify that all valves are set to their normal operating positions.

If you recently de-winterized, this step is worth double-checking.

Step 7: Look for Leaks or Air in the System

Low pressure is not always caused by water loss that you can see.

Small leaks or loose fittings, particularly on the suction side of the water pump, can allow air into the system. This leads to weak pressure, sputtering faucets, or inconsistent flow.

Inspect:

• Fittings near the water pump
• Connections behind cabinets or access panels
• Areas that were recently serviced

If you hear the pump cycling on and off with no faucet open, air intrusion or a leak is likely present.

Tighten fittings or replace damaged lines as needed.

Step 8: Confirm the Freshwater Tank Level

If you are running off the onboard pump, verify that the freshwater tank is not empty or nearly empty.

Low water levels can allow air into the system, which reduces pressure and causes sputtering at faucets.

Simply fill the RV water tank with freshwater if needed, then open each faucet one at a time until the flow stabilizes. This helps purge air from the lines and restores normal operation.

It’s a simple check, but one that gets overlooked more often than people like to admit.