Clean water is one of the most important parts of RV living. Whether you’re camping in the mountains or staying at a full-service RV park, water quality can vary greatly. That’s why installing a water filter system in your RV is essential. But where should you install it — inside the RV, outside, or both? Let’s look at the best options for performance, protection, and convenience.
Why You Need an RV Water Filter
An RV water filter removes sediment, chlorine, and bacteria that can enter through campground hookups. Without one, your plumbing, water heater, and faucets can build up minerals or contaminants. A filter ensures safe, clean water for drinking, cooking, and showering.
The Three Most Common RV Water Filter Locations
1. At the Water Inlet (Outside the RV)
This is the most popular and convenient location.
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You connect the filter between the campground faucet and your RV’s freshwater inlet using a short hose.
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It filters all water entering your system, including water going into the storage tank.
Benefits:
Easy to install and maintain.
Protects the entire plumbing system from sediment and debris.
Works with any standard garden-hose-style filter.
Drawback:
– Can freeze or get dirty in harsh weather if left outside.
2. Inline Filter Inside the RV
This setup places the water filter under the sink or inside the storage compartment, usually near the pump or water heater.
Benefits:
Protects sensitive appliances like coffee makers, faucets, and showers.
Filters only the water used for drinking or cooking (depending on setup).
Drawback:
– Requires more installation effort and plumbing access.
3. Dual-Stage System (Best of Both Worlds)
For full protection, many RV owners use a two-filter setup:
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A sediment filter outside the RV to block sand and rust.
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A carbon filter inside for better taste and odor removal.
This setup delivers clean, great-tasting water while extending the life of both filters.
Installation Tips
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Always place the filter before the water enters your RV tank or plumbing.
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Use food-grade hoses to avoid contamination.
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Flush new filters before use.
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Replace cartridges every 3–6 months (depending on water quality and usage).
So, where should you install your RV water filter?
For most RV owners, the best location is at the water inlet — it’s simple, effective, and protects the entire system. If you want the highest water quality for drinking, combine it with an interior filter under your sink.
At Custom-way in Artesia, CA, we install and maintain RV water systems, softeners, filters, and full plumbing setups, along with roof repair, remodeling, and collision services.
Call +1 840-205-7314 or email customway.ca@gmail.com for expert help keeping your RV in top shape.