How to Increase Water Pressure in an RV Toilet

How to Increase Water Pressure in an RV Toilet
Having a recreational vehicle toilet with poor water pressure is no fun. Luckily, the problem is usually easy to diagnose. By checking the water supply--or the setting on your RV water pump--chances are you can improve the water pressure. Before checking the water pressure, determine whether your RV is hooked up to an outside water supply or it's getting water from the on-board tank. Then proceed.


Difficulty: Moderately Easy

Toilet Not Hooked Up to Outside Source

Things You’ll Need:
  • RV water pump
  • RV boost pump
  • RV pressure regulator
Step 1
You must use a water pump to retrieve water from your tank. Adjust the pressure knob on your water pump in increments of 5 psi, and test your toilet each time until you achieve satisfactory water pressure. The pump is designed to maintain "normal" pressure ("normal pressure" is defined as whatever psi your pump is set at). The maximum pressure you can apply is limited by the power of the pump.
Step 2
If water pressure in your toilet is still too low, consider adding a boost pump. Consult your water pump's manufacturer to learn what boost options are available. Attach the boost to your pump by following the manufacturer's instructions.
Step 3
Make sure you do not exceed the recommended water pressure. Water pressure that is too high can cause plumbing problems, such as pipes that burst. Although RV plumbing systems are supposed to be built to withstand 100 to 125 psi, it is generally considered safe to exert no more than 65 psi of water pressure on your RV.

Toilet Hooked Up to Outside Source

Step 1
Check the connections on the hookups. Make sure they are secure. Check that the "city water" valve is turned on all the way. This may solve your problem. Also, some RV parks just have poor water pressure, so it may not be your connection's fault. If checking the connections does not work, continue to Steps 2 and 3.
Step 2
Turn on your water pump, and use it in conjunction with the outside water source. This will automatically increase water pressure. When your toilet flushes, or when you turn on the faucet, the pump will go into action. It will increase pressure by pumping more water into your plumbing system.
Step 3
Start with a low pressure setting on your water pump, and increase it by 5 psi as you test your toilet. This should solve the water pressure problems. You may want to buy a water pressure regulator if you are using both the outside water and your tank water. A water pressure regulator will ensure the pressure does not get too high and damage your plumbing.

Article Written By Kelsey Childress

Kelsey Childress runs a freelance creative business called Awen Creative that specializes in SEO Web content, social media marketing and blogging. She has been writing for online and in-print publications for over six years, and has a bachelor's degree in English literature and creative writing from Kansas State University.

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