Waterdrop X8 Reverse Osmosis System (Tankless, Under Sink)

How much space does the Waterdrop X8 require under my sink?

The X8 measures 42.5 x 46.2 x 15.9 cm and saves 70% more space than traditional tank-based systems. It requires a standard electrical outlet under the sink and fits in most kitchen cabinets. The compact tankless design eliminates the need for a storage tank, making it suitable even for smaller kitchen spaces. You'll need clearance for the inlet and outlet connections plus easy access for the 3-second filter changes.

What contaminants does the 9-stage filtration system remove?

The system effectively reduces chloride, lead, TDS (Total Dissolved Solids), fluoride, PFOA, PFOS, sand, odours, taste issues and salt. The 0.0001μm reverse osmosis membrane captures particles 1000 times smaller than bacteria. It's certified to NSF/ANSI 58 standards for TDS reduction and NSF/ANSI 372 for lead-free materials. The multi-stage approach ensures comprehensive purification whilst maintaining beneficial mineral content when used with the optional remineralisation filter.

How often do I need to replace the filters and what do they cost?

Filter replacement schedules vary by stage: the F1G pre-filter lasts 6 months, the F2 carbon filter lasts 12 months and the main RO membrane lasts 24 months. Replacement costs are approximately £30 each for the F1G and F2 filters and around £200 for the main RO membrane. The smart faucet displays filter life remaining and alerts you when replacement is needed, preventing you from using expired filters.

Can I install this system myself or do I need a plumber?

Most people can install the X8 themselves in approximately 30 minutes using the included instructions and components. You'll need basic DIY skills to connect the water supply, install the faucet and plug in the electrical connection. The system includes all necessary fittings and tubing. However, if you're uncomfortable working with plumbing connections or don't have an electrical outlet under your sink, professional installation may be preferable.

How does the smart faucet TDS monitoring work?

The intelligent faucet features a digital display that shows real-time TDS (Total Dissolved Solids) readings in parts per million (ppm). This indicates water purity levels - lower numbers mean purer water. The display helps you monitor filter performance and water quality changes over time. When TDS levels start rising, it indicates filters may need replacement. The system typically produces water with TDS levels between 13-16 ppm from UK tap water.

What's the difference between this and traditional tank-based RO systems?

Traditional systems store filtered water in a pressurised tank, which can harbour bacteria and takes up significant space. The X8's tankless design provides fresh, on-demand filtration without storage risks. It delivers faster flow rates, saves 70% of cabinet space and eliminates the possibility of tank contamination. The trade-off is that it requires electricity to operate the pump, whereas tank systems rely on water pressure alone.

How much water does the system waste and is it environmentally friendly?

The X8 operates with an efficient 2:1 pure water to drain ratio, producing two cups of clean water for every cup of wastewater. This is significantly better than many RO systems that waste 3-4 cups per cup of pure water. The 800-gallon daily capacity means you can eliminate plastic water bottles, reducing environmental impact. The wastewater can be collected and used for garden irrigation or cleaning purposes.

Will this system work with my existing kitchen tap setup?

The X8 comes with its own smart faucet that requires a separate hole in your sink or worktop. If you prefer to use your existing tap, you can purchase a 3-way tap separately, though you'll lose the TDS monitoring functionality. The system connects to your cold water supply under the sink and doesn't affect your existing hot water tap. Some users successfully integrate it with existing 3-way taps using appropriate connectors.