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RO Water Filter System Replacement Filter
RO Water Filter System Replacement Filter- detail

RO Water Filter System Replacement Filter WD-D6RF

Model: WD-D6RF
Compatible with Reverse Osmosis Water Filtration System (WD-D6)

  • The composite FIST filter adopts 2 sediment PP layers, 0.0001 µm reverse osmosis membrane layer, and 2 activated carbon block layers.
  • Removes more than 1,000 contaminants and improves the taste of water.
  • Provides you with 12 months or 1,000 gallons of clean filtered water.
  • You can replace the water filter in 3 seconds with a single twist. No tools required.
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Item model number
Flow rate
0.42 gpm
The first PP cotton layer , the activated carbon block layer, the second PP cotton layer, DOW Reverse osmosis membrane layer , and the post-activated carbon block layer 
Product dimensions
6.8*7.7*16.2 inches
Service life
1 year

What contaminants can this filter remove?

• TDS, chlorine, taste and odor, chloramine, scale, turbidity.
• Carcinogens: chromium (hexavalent), chromium (trivalent), cadmium and cadmium compounds, ferric oxide.
• Heavy metals: lead, mercury, barium, copper, radium 226/228, aluminum.
• Microorganic contaminants: cysts.
• Inorganic pollutants: arsenic and inorganic arsenic compounds, fluoride.
• Organic pollutants: asbestos, benzene, formaldehyde, lindane, phenytoin nitrate/nitrite bisphenol A, trichloromethane, chlordane, PFOA & PFOS, etc.

How often do I need to change the filter?

The FIST filter has a 1-year lifetime. Waterdrop D6 Reverse Osmosis System has filter life indicators that will remind you to replace the filter.

Why does the filtered water taste funny?

• The filter is about to expire. Check the indicator reminder to confirm and replace it.
• The system hasn't been used for a while. Turn on the D6 faucet and allow it to flush for a while before drinking.

What will happen if I do not change my filter when the filter is expired?

Over-used filters will degrade the filtration performance, causing contaminants to leak back into the water and adversely affect your health.
Removes 99.99% of Harmful Contaminants
Removes 99.99% of Harmful Contaminants
  • The first PP cotton layer filters out sediment, rust, and other large particles.
  • The activated carbon block layer removes organic matters and chlorine.
  • The second PP cotton layer further removes suspended matter and other impurities.
  • Reverse osmosis membrane layer has a filtration accuracy of 0.0001 μm, intercepting salt, atrazine, nitrates, PFAS, lead, sodium, chromium, benzene, etc.
  • The post-activated carbon block layer removes taste and odor, improving the taste of water.
Huge DOW® RO Membrane
  • With a pore size of 0.0001 µm, this filter stands out amongst others for its better filtration and longer service life. It removes 99% of viruses, harmful chemicals, heavy metals, pesticides, etc.
Huge DOW® RO Membrane
Service Life
Service Life
  • This D6 RO water filter provides you with up to 12 months or 1,000 gallons of clean water for you and your family.
Easy Set-up
  • D6 RO system is designed for DIY installation within 30 minutes.
Easy Set-up
Your Purchase, Your Love
Your Purchase, Your Love
  • Every time you buy a Waterdrop product, we will provide one day of clean water to a child in need.