Water quality is serious business, and even regular visitors may not know what’s in the water at a campsite.

Many RVers see having water filtration in your RV as a need.

Although reverse osmosis systems are undoubtedly the greatest water filters available, do RVs need them? Join us as we investigate further!

A Reverse Osmosis System Is What?

A unique kind of water filtration system is called a reverse osmosis, or RO, system.

For use on naval ships, this kind of water filtration system was first created to remove salt from the ocean.

On boats, these devices are often referred to as water makers.

Some of the cleanest water one may get from a household water system is reported to be produced by reverse osmosis systems.

The only systems that can remove dissolved particles from water, including salts, metals, colors, minerals, and more, are those that use osmosis.

The majority of reverse osmosis systems are point-of-use, or limited to a drinking water faucet.

This is because the system usually requires a storage tank and produces clean water at a very sluggish rate.

Reverse Osmosis: How Does It Operate?

We must first comprehend conventional osmosis in order to comprehend reverse osmosis.

This phrase may come to mind if you took biology in high school.

This is so because semipermeable membranes are normally crossed by osmosis.

Fluid always naturally flows upward from regions with lesser dissolved solids.

While excellent for biology, this does not assist humans in filtering anything.

The idea of reverse osmosis is rather straightforward.

By forcing pressured water across a semipermeable membrane that traps pollutants, the method removes contaminants.

Water is pressured and driven naturally backwards through the process in reverse osmosis.

Reverse osmosis systems often include many filters, each of which is intended to remove a different impurity.

These may include dissolved sediments, chlorine, or other substances that might taint or degrade the quality of the water.

The RO membrane serves as the system’s main filter.

Since this particular membrane is so thin, water must be forced through it under strong pressure.

A reverse osmosis system has a.0005 micron filtration, when most water filters only have a.5 micron filtration size.

Due to its fineness, it has to be flushed or otherwise “cleaned” often by water flowing over it.

This is known as brine water or rejected water.

Many of the contaminants that you are attempting to remove from the water are present in this brine water.

The brine is often poured down the drain, but sometimes it is recycled and sent through the RO filter once more.

The water is often collected in a tank once it has been cleansed so that it may be utilized later for drinking.

The RO process may be extremely sluggish, thus this tank is utilized so that you don’t have to wait a half-hour to fill a glass.

Can An RV Use RO To Filter All Of Its Water?

The freshwater tank in the RV makes it feasible to use whole RV RO systems.

Because the RO system is sluggish at producing water, as we discussed before, the majority of RO systems employ a tank to hold the clean water.

An RV is prepared to operate a RO system, although this is seldom done in a home since it requires installing substantial tanks and pumps.

Pressurized city water is used throughout a whole RV reverse osmosis system to push water through RO membranes.

The freshwater tank of the RV receives 1 to 5 gallons of RO system output every 30 minutes.

When necessary, the RV will next utilize its onboard water pump to pump this clean water.

A sensor alerts a valve to shut the RO water supply when the tank is full in order to avoid overfilling.

The grey tank and the sewer are both filled with used brine water.

Choosing A Reverse Osmosis System For Your RV Might Be Confusing.

Because the reverse osmosis system must be connected to a tank sensor that turns off the reverse osmosis when the tank is full, whole RV RO systems become somewhat more difficult.

These systems are likewise restricted to around 100 gallons per day, although an RVer can generally get by with this amount of water.

Installing a whole RV reverse osmosis system is challenging.

Even though the whole reverse osmosis system for an RV may seem fantastic, these systems are often the most costly and generate the most effluent.

If you have access to municipal water, a complete RO system is fantastic, but it will not be effective for fast filling an RV.

The tank may take a whole day to fill with RO water, and you must dispose of the brine.

Normally placed right under your RV sink, drinking water-only devices filter water just before it exits your faucet.

Although these systems are less expensive and generate less trash, they do nothing to stop pollutants or other troublesome water-related elements from getting into your appliances or plumbing fixtures.

This little drinking faucet would be the point of usage.

Last but not least, a countertop system is the simplest method to get RO drinking water.

These systems provide great water quality and are economically priced.

RVers love the AquaTru system because it makes getting high-quality water so much easier.

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Reverse Osmosis Systems for RVs: Pros and Cons

Although reverse osmosis systems for RVs offer certain advantages, not all RVers should use them.


Reverse osmosis is the best option if you want the purest drinking water you can obtain.

For your piece of mind, this comprehensive treatment may be necessary if you routinely utilize unreliable water sources.

You may also use your drinking water to create clean, transparent ice.

The water also tastes horrible in many locations where RVs go, but the only way to consistently get excellent water is with RO water.

Additionally, your system is inexpensive to maintain after installation.

Other than the odd filter replacement, it won’t need much money or upkeep to function.

Depending on the filter, the typical RO membrane will last between 1,500 and 3,000 gallons of water.


For those RVers interested in a reverse osmosis system, cost is sometimes the biggest obstacle.

The cost of getting the appropriate tools and hiring someone to install them might be rather high.

These systems squander resources as well.

The device wastes many more gallons of water during the filtration process for every gallon of cleaned water.

The squandered water might be harmful when you just have a limited amount of water.

It’s also crucial to remember that RO water removes practically all of the water’s components, including minerals.

These minerals, which are crucial for the body’s appropriate balance, may actually be eliminated from your body through dilution when you consume RO water.

This issue may be resolved by reintroducing minerals using a product like Cone Trace.

putting water in a glass after using a pitcher

You may substantially reduce the amount of time you spend off the grid by utilizing a RO drinking water system while it’s not connected.

This is because there will be significant water waste.

Brine (wastewater) has been sent back to the fresh water tank on occasion.

However, as it concentrates minerals in the fresh tank, this might lead to issues like mineral building and deposits in other parts of the freshwater system.

Does Investing in a Reverse Osmosis System for Your RV Make Sense?

A reverse osmosis system is a fantastic option to assure water quality if you often travel or spend a lot of time in your RV and utilize various water sources.

Additionally, it’s a great option for RVers who want the purest, cleanest water imaginable.

These systems may not be worth the price to acquire, install, and operate for occasional travelers, individuals wanting to save water, or RVers who keep connected to a clean, dependable water supply.

Reverse osmosis systems for RVs may be a useful tool for maintaining your health and keeping your vehicle secure while traveling.

Although they’re not for everyone because of the waste, expense, and upkeep needed.

For our own drinking water, we don’t utilize a RO system; instead, we employ a multi-stage filtering system with UV purification as the last stage.

Reverse Osmosis RV Water Filter Videos Suggestions From Youtube

Best RV Water Filter System – Reverse Osmosis – Full Time RV Living – NoFixedAddress
Installing an RO Water Filtration System into an RV | Full Time RV Living –
Living A New Dream
RV Reverse Osmosis RO Systems Explained and a Tour by Jack Mayer – RVHaulers with Gregg

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Written by Bob Matsuoka
Bob Matsuoka is a blogger and founder of RVing Beginner blog. He has been blogging for over five years, writing about his own family’s RV adventures, tips for people who are interested in buying an RV or taking their family on an adventure by RV.