Waterdrop D4RF Filter for WD-D4-W Reverse Osmosis System
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WD-D4RF Filter for Waterdrop D4 Reverse Osmosis System

  • Replacement for WD-D4-W reverse osmosis filtration system


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Key Feature

  • [Compatible model] WD-D4-W
  • [Revolutionary filter structure] We adopt an innovative technology and design to integrate different filtration materials into a 6-in-1 composite filter. The reverse osmosis water filter uses the least space to achieve an optimized filtration effect.
  • [Crystal clean water] Highly efficient reverse osmosis filter reduces any impurities larger than 0.0001 microns. With this system, you can count on getting clean, fresh drinking water with improved taste.
  • [Worry-free replacement] Replacing the filter is no difficult task. All you need to do is to open the front cover and pull out the filter. Yes! That simple.
  • [All-year-round excellent performance] The reverse osmosis water filter has a 1-year service life, protecting you from water hazards for the entire year.

WD-D4RF Filter for Waterdrop D4 Reverse Osmosis System

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WD-D4RF Filter for Waterdrop D4 Reverse Osmosis System

Model number
Filter life
Up to 12 months or 1,000 gallons
Feed water pressure
14.5-87 psi
Feed water requirement
Municipal tap water
How to chose your RV water filter?
You need to know your water source and water quality at first.
The key to find a suitable water filter for yourself is to know your local water quality. Most RV sources water from municipal tap water. City water suppliers use chlorine to disinfect municipal water and eliminate waterborne-disease carrying bacteria. However, chlorine can leave water with a chemical taste and smell.
Regardless of the water’s source, if you are in a region of the country with hard water, your RV will be exposed to high levels of calcium and magnesium, which can lead to scale build-up and damaged plumbing.
Waterdrop D4 Reverse Osmosis Filter effectively reduces chlorine, sediments, heavy metals, bacteria, chemicals, viruses and more, basically any impurities larger than 0.0001 micron. That means this filter can also reduce TDS and soften your water sources. This system is one of the best water filter for your RV.
Also in some RV parks, they use local well water as source. Well water can possess high levels of sediment, heavy metals, and potentially bacteria and microorganisms. If so, we suggest you to install a pre-filter, blocking out large particles initially. Pre-filtered water without large particles travels into RV can protect water-related appliances in your RV.

How does reverse osmosis filter work?

The water supply in your home gets in under pressure, irrespective of where you live. Reverse osmosis relies on this same pressure to push water through a semipermeable membrane.
Water passes through the semipermeable membrane under pressure. This leads to the separation of the impurities from the water molecules. The impurities are on one side of the membrane, and the water molecules on the other, with the clean water going to your tap without any impurity whatsoever. There are several filtration stages in the RO water filtration process – up to seven sometimes, and these are responsible for the high purity of water.

Can I drink reverse osmosis water everyday?

Yes, it is perfectly safe to drink reverse osmosis water frequently. There are fewer contaminants in the water, so you are safe. The absence of contaminants means you are not prone to health issues like brain damage or anemic conditions in children. Parasites causing diseases are also eliminated from your water sources, providing you with clean and pure water.

Does Waterdrop wholee house reverse osmosis waste a lot of water?

For a traditional RO system, wastewater production is inevitable. However, the Waterdrop D4 RO purifier is powered by advanced technology that keeps the drain ratio at 1:1. Therefore, you can save up to 300% more water than the tanked traditional filter systems. You also spend less on water bills.

How long does a reverse osmosis filter last?

The integrated filter in this system needs to be replaced once every year.

When to replace the filters of this reverse osmosis system?

You should replace it only once a year, depending on the quality of your local water.

Can I connect a water softener with this reverse osmosis system?

Yes, this reverse osmosis system works flawlessly with a water softener.

Is this reverse osmosis water filtration system suitable for well water?

There are high amounts of sediments in well water, alongside harmful bacteria, microorganisms, and heavy metals. To use this reverse osmosis system with well water, kindly install a pre-filter, which will filter out the large particles at the first line.

Can I connect the remineralization filter with this reverse osmosis water filter?

Yes, this reverse osmosis water filter works perfectly with a remineralization filter. All you have to do is buy a suitable remineralization filter and connect it to the system. Simply search for “Waterdrop Remineralization Filter” and add the filter.
Compatible With Waterdrop D4 Reverse Osmosis Water Filtration System
Model Number: WD-D4RF
Revolutionary Filter Structure
Technology is no longer as complex as it used to be. We adopted innovative technology and design to integrate different filtration materials into a 6-in-1 composite filter after comprehensive research on the properties of various materials. The reverse osmosis water filter uses minimal space to optimize the filtration effect, reducing TDS, chlorine, heavy metals, and more.
Powerful Reverse Osmosis Filtration Layer
The accurate RO membrane features 0.0001 micron pore size, effectively reducing TDS value and contaminants such as harmful chemicals, chlorine, VOCs, lead, mercury, arsenic, copper, etc.
All-Year-Round Performance
This is not a filter that you would have to change often. You need not change it for a whole year, and you would still be assured of excellent performance. The reverse osmosis filter has a 1-year service life, protecting you from water hazards for the entire year.
Effortless Replacement
Replacing the filter is incredibly easy. You only need to open the front cover and pull out the filter. This does not even require much time and energy.
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