How to Properly Connect the RV City Water Inlet

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The RV city water inlet is an easy way to provide pressurized water into your RV unit. The RV city water inlet on the outside of the RV makes it possible to hook up to an outside source, such as a campground or residential faucet using a hose, and have pressurized water running on the inside.

To hook up to the RV city water inlet you must first remove the outside cap and get a hose that is designed for drinking water. A specialized RV drinking water hose is drinking water safe and made of materials approved by the National Sanitation Association, which contains no toxins rubber or lead. Attach the hose to the unit directly or you can use an elbow connector to make it easier to get connected and disconnected to the RV city water inlet.

Once connected to the RV city water inlet, pressurized water will come into your unit bypassing the water pump. This provides pressurized water to faucets, showers and toilets. On newer models with an enclosed service center, you can also fill the freshwater tank by switching the valve inside near the tank.

Be careful of the pressure when connecting to the RV city water inlet, because some campgrounds use wells with a pump and can have high pressure levels. Even outside garden hoses can have high pressure levels. It may be necessary to connect a regulator to the hose before attaching it to the RV unit. This will keep the water pressure coming into your RV around 40 to 60 psi. Another suggestion is to attach a filter to remove any sediment and water contaminants before the water enters the unit.

Having pressurized water coming into your RV will give you the water you need to cook, take showers and use the bathroom. Definitely one of the benefits to connecting to a water source while taking an RV vacation.

Another video from RV Repair Club shows you how to install a quick release adapter to your RV city water inlet to make it easier to connect to water sources.

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5 Responses to “How to Properly Connect the RV City Water Inlet”
  1. Jim Manning

    This vid should be replaced. Tell us to put the pressure regulator at the tap; one filter at the coach; and a finer filter under the sink for drinking water.

    • Customer Service Techs

      Hi Jim. Thanks for watching the video and for the feedback. We love getting comments from our community. You bring up some really good points. This particular video was intended to be more of a general overview of the city water system and some suggestions to improve water quality/taste. We have actually shot some more in-depth videos that show installing the pressure regulator at the tap and an in-line filter that will be posted to the site in the future, so you’re points are right on the mark. And we’ll certainly be shooting more segments around water systems in the future. Again, thanks for watching and love the comments…keep them coming!

      Safe travels!


  2. brenda luis

    We have brand new 2018 5th wheel we were trying out the water ..we weren’t sure if we had anti freeze from dealer in lines… while connecting to city water…we have water in bathroom and toilet..but our kitchen sink is in the rear of camper… no water…we have the bypass off..which is located in compartment of storage….. any suggestions on why this is happening???

    • Customer Service

      Hello Brenda,

      The bypass valve typically is designed for the water heater so you can drain the water heater and bypass around it to add antifreeze. This way you don’t need 6 gallon of RV antifreeze in the water heater. It should not have anything to do with the water lines going to the kitchen? I would believe there must be a shut off valve in line to the kitchen? Follow the lines from the kitchen working up to the water pump and I would think you can find the valve.


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  3. Michael

    I see someone already suggested that r pressure regulator should be a faucet, minimizes possible hose bursting.