Before you decide upon which RV water filter best fits your needs, it’s important to establish how much clean water you need. Do you want all of your water to be filtered or just your drinking water?
Most campgrounds and RV parks provide chlorinated city water. Others offer well water. If you’re dealing with chlorinated water, a carbon filter in your RV’s filtration system will remove the taste and smell of chlorine from your water. If the water you get is relatively clean, then an inline RV water filter for your kitchen tap will suffice. Regardless of the source, reverse osmosis is the most efficient method for purifying your drinking water, although reverse osmosis tends to remove nutrient-rich minerals – such as calcium, potassium, and magnesium.
Canister systems are the most commonly used water filter for RVs, but they are not the only option.
However, before we go any further, it’s important to first understand some terminology used when talking about RV water filters.
- Microns: Filters are classified by the size of the particles they can remove. The size of particles is measured using microns. To put things in perspective, bacteria range from 0.2 to 2 microns in width and from 1 to 10 microns in length.
- NSF Class I, Class II, Class III, etc.: The National Sanitation Foundation establishes ratings for the effectiveness of filters. Class I filters are the most efficient at removing chlorine from water, followed by Class II, and so on.
- Life: As the name indicates, the life of a water filter is the amount of time you can expect to use your water filter cartridge before having to replace it.
- Flow rate: Filters slow down water flow; they do so to clean the water. Flow rate indicates how many gallons per minute your filter can handle.
- Material: The medium used in constructing the filter.