How Long Does An RV Water Filter Last?

by Jay | Posted on February 9th, 2023

Are you looking for a reliable water filter for your RV? With so many options, it’s hard to know which is right. This blog post will cover how long an RV water filter should last and what features to look for when shopping around. Keep reading to find out more!

How Often Should You Change Your RV Water Filter?

When it comes to RV water filters, the general rule of thumb is to change them every three to four months.

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This may vary depending on the type of filter, frequency of use, maintenance, and quality of the filter. To ensure that your RV water filter lasts as long as possible, it is important to clean it regularly, use a pre-filter, check and replace cartridges as needed, and store it properly.

In some situations, you may get up to six months out of a filter, but this will largely depend on how often you’re using your RV and how heavily contaminated the water is. With proper care and maintenance, you can ensure that your RV water filter lasts for as long as possible.

What is an RV water filter?

An RV water filter is designed to remove impurities, debris, and chemicals from water before entering the vehicle. The filter usually goes between the water supply and the RV on the RV water hose. 

Depending on the type of filter, it can screen out particles as small as 0.5 microns or even smaller, protecting your family and your RV’s plumbing system from unpleasant tastes and odors and potential health issues. 

Types of RV water filters

There are several types of RV water filters available on the market. The most popular type of filter is the inline filter, which is installed between the water supply and the RV hose. This filter can be used for multiple purposes like gardening, car washing, RVing, navigational purposes, or other needs.

In addition, there are sediment filters, carbon filters, UV filters, and reverse osmosis filters. 

Sediment filters are designed to remove sediment particles from water, while carbon filters are used to reduce bad odor and taste. UV filters use ultraviolet radiation to kill bacteria, while reverse osmosis systems force water through a semipermeable membrane which removes contaminants. 

How does an RV water filter work?

An RV water filter removes impurities like dirt, rust, bacteria, and other particles from your water supply. The filter is typically a canister filled with a pleated paper filter and is typically installed either at the water source or in the RV itself. 

As water flows through the filter, it passes through the pleats of the paper filter, trapping the impurities and allowing clean water to pass through. The pleated paper filter also contains activated carbon, which helps to remove any remaining impurities further. The filtered water is then available for your RV’s drinking and cooking. 

Keeping your RV water filter clean and replaced regularly is essential to ensure clean drinking and cooking water. RV water filters often come with diagrams or instructions on assembling them.

Why do you need to change your RV water filter?

Regularly changing your RV water filter ensures clean and safe drinking water access. Factors such as how often you use your RV, the quality of your water supply, and how often you clean your filter can all affect how long your filter will last. 

To ensure you have access to clean and safe water, it is recommended that you change your RV water filter every six months to ensure optimal performance.

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What is the average lifespan of an RV water filter?

The average life span for any water filter is between 4-6 months for an average household. However, the average life span of an RV water filter is typically between three to four months. This depends on various factors, such as the type of filter, filter size, water usage, and water quality. Camco RV and Marine Disposable Water Filter # CAM40043, for example, will last about three months on average. 

Heavy usage or dirtier water, however, can reduce the lifespan of your filter. Pay attention to the quality of the water flowing through your filter so you can get the most out of it and replace it regularly.

Factors affecting the life span of an RV water filter

The lifespan of an RV water filter depends on various factors, including the filter’s type, the filter’s size, and the amount of water used. For instance, KDF and GAC filters are very effective in treating bad tastes and odors in water, but their life spans may vary depending on the amount of water usage. 

Additionally, larger filters may last longer than smaller ones due to their capacity to handle higher volumes of water. Furthermore, high sediment levels or other contaminants can significantly reduce a filter’s life span. Ultimately, choosing the right RV water filter for your needs and effectively maintaining it can ensure that it lasts for as long as possible.

Factors That Affect How Long an RV Water Filter Lasts

The quality of the water flowing through your RV water filter is an important factor in determining its lifespan.

Type of water filter

When it comes to the type of water filter used, the lifespan of an RV water filter can vary.

Most RV water filters, however, will last for three to four months. The KDF and GAC filters are also effective in treating the bad taste and odor of the water while restricting the growth of bacteria.

These filters are easily hooked up to a water hose and can last around a month with heavy usage or up to six months with lighter use. It’s important to consider the type of filter when determining how often you’ll need to change your RV water filter.

Frequency of usage

If you use your RV more frequently, such as for extended camping trips for weeks at a time, then your RV water filter will need to be changed more often. As water flows through the filter, it accumulates dirt and debris, which can reduce its efficiency.

When used frequently, the filter will need to be replaced more often in order to ensure that it is providing clean, safe water. It is important to check the filter periodically and replace it as needed in order to ensure that the water is safe for drinking and other uses.


To make sure your filter stays in good condition, you should clean it regularly and replace cartridges as needed. It’s also important to store filters properly and use a pre-filter to help prolong their lifespan. Doing these simple maintenance steps will help ensure that your RV water filter lasts for the expected three to four months.

Quality of water filter

Poor-quality water with higher levels of particles or contaminants can clog the filter and reduce its lifespan, while good-quality water will help to extend the life of your RV water filter. You should always check the quality of your water before using the filter to make sure it meets the requirements of your RV water filter.

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Tips to Make Your RV Water Filter Last Longer

One way to increase the longevity of your RV water filter is to clean it regularly.

Clean the Filter Regularly

This can be done by running a vinegar solution through the filter or by using a cleaning solution specifically designed for water filters.

Depending on the type of filter you have, it may need to be cleaned with a brush or other cleaning device, or you may be able to use a simple cleaning solution.

For instance, the Camco RV and Marine Disposable Water Filter is designed to be cleaned with a brush in order to remove any debris that has been trapped by the filter.

Use a Pre-Filter to Prolong the Life of Your RV Water Filter

Additionally, using a pre-filter to catch large particles before they enter the main filter will help reduce the amount of debris and sediment that needs to be filtered, thus extending the life of the filter.

Clear2O’s DirtGuard sediment pre-filter is one of the best options, as it helps to remove particles from the water before they reach the main filter. This can be especially helpful if you’re using your RV in areas with higher levels of sediment and dirt.

By using a pre-filter, your main filter won’t have to work as hard and will last longer, so you can get more use out of it for longer periods of time. Depending on your usage, this could result in six months or even an entire camping season of clean and safe water for outdoor activities or weekend trips.

Check and Replace Cartridges as Needed

Depending on the type of filter you have and the quality of water that is entering the system, cartridges may need to be replaced more frequently than others. If your RV water filter is used often and has a high flow rate, this may cause the cartridge to become clogged more quickly.

If you notice that the pressure of your water supply is lower than usual, it is likely that your filter needs to be changed. Additionally, if the taste or smell of your water changes, this is a sign that the filter needs to be replaced.

Store Filters Properly

To maximize its lifespan, store your RV water filter in a cool, dry place. Exposure to direct sunlight or extremely hot temperatures can reduce the life of your filter. Additionally, make sure that the filter is kept away from any moisture or humidity.

Moisture can cause the filter to become clogged or damaged and reduce its lifespan significantly. It is also important to keep your RV water filter out of reach of children and pets. This will help prevent accidental damage or ingestion of any parts of the filter.


In conclusion, RV water filters are essential for providing safe and clean drinking water on the road. It’s important to understand how RV water filters work and the available types to choose the right one for your needs.

The average life span of an RV water filter is around 3 to 6 months, depending on the type of filter and how often it is used. Factors such as water quality and usage frequency can also affect the life span of an RV water filter. 

To ensure your RV water filters work properly, it’s important to replace them regularly and maintain them properly. With some knowledge and proper maintenance, you can ensure that your RV water filter provides clean, safe drinking water all year round.


Jay is a health and wellness enthusiast with expertise in water quality and nutrition. As a knowledgeable advocate for holistic well-being, Jay successfully manages Type 2 Diabetes through informed lifestyle choices. Committed to sharing reliable and authoritative insights, Jay combines firsthand experience with a passion for enhancing health."