10 Best 100 Gpd Reverse Osmosis System in the UK 2025
Updated on 16/07/2025
#1
Recommended
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- Water remineralization and alkalization ensure optimal pH levels above 7.5, restoring essential minerals and enhancing taste.
- Produces 600 gallons of water per day, meeting the high demand of large households with fast fill times.
- Advanced water-saving technology achieves a 1:1.5 drain to pure ratio, saving up to 450% more water than traditional systems.
- Smart LED display shows real-time TDS levels and filter lifespan, allowing for easy monitoring and maintenance.
- Tankless design saves space under the sink and prevents secondary contamination, ensuring ultra-pure water supply.
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- Water remineralization and alkalization ensure optimal pH levels above 7.5, restoring essential minerals and enhancing taste.
- Produces 600 gallons of water per day, meeting the high demand of large households with fast fill times.
- Advanced water-saving technology achieves a 1:1.5 drain to pure ratio, saving up to 450% more water than traditional systems.
- Smart LED display shows real-time TDS levels and filter lifespan, allowing for easy monitoring and maintenance.
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#2
Value for Money
15% Off
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- Removes up to 99% of over 1,000 contaminants including chlorine, fluoride, and lead, ensuring safe drinking water.
- Equipped with a booster pump for efficient performance, maintaining high throughput and reducing wastewater compared to non-pumped models.
- Features a UV filter with an automatic Flow Sensor Switch that conserves energy and extends the lifespan of the UV lamp.
- Includes a brushed nickel faucet, a transparent filter housing for easy inspection, and multiple pre-filters for effective contaminant removal and mineral restoration.
- Designed for easy DIY installation under a standard kitchen sink, with all necessary components and instructions provided, ensuring a reliable and low-maintenance setup.
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- Removes up to 99% of over 1,000 contaminants including chlorine, fluoride, and lead, ensuring safe drinking water.
- Equipped with a booster pump for efficient performance, maintaining high throughput and reducing wastewater compared to non-pumped models.
- Features a UV filter with an automatic Flow Sensor Switch that conserves energy and extends the lifespan of the UV lamp.
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#3
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- [No Installation & High Efficiency] - This iSpring RCD100 countertop Reverse Osmosis system does not need any plumbing or installation. Simply plug it in and start enjoying clean drinking water right away. This Reverse Osmosis countertop is suitable for use in any location with an available power outlet, including offices, bedrooms, kitchens, RVs, and more. With 100 GPD capacity, this RCD100 is perfect to meet the needs of small to medium families. The advanced wastewater circulation technique also enhances the filtration performance, achieving a 2.5:1 pure to drain water ratio. Water flow rate: 0.16 GPM.
- [Instant Hot & Customizable Temperature] - The RO system countertop features water filtration and instant heating to meet various temperature demands. Equipped with 4 temperature modes (Room Temperature, 120°F, 185°F, and 205°F), this countertop RO water filter system provides immediate access to water at the desired temperature, making it convenient for preparing baby formula, coffee, and tea. Featuring a child safety lock, the RCD100 water dispenser is the perfect addition to any household. Stay hydrated throughout the day with our effortless filling and usage system. Notes: The required incoming water temperature: 5 - 25℃
- [Most Impurities Reduction] - As iSpring’s next-generation countertop Reverse Osmosis water filtration system, it removes up to 99% of over 1,000 harmful contaminants like vinyl chloride, chlorine, fluoride, lead, arsenic, PFAS, asbestos, calcium, sodium and more. This ensures access to fresh and filtered drinking water. The Reverse Osmosis water filtration system countertop features a built-in UV light, providing added protection. Please note: this RO system is intended for city water, not well water.
- [Smart Panel & Filter Life Monitor] - The smart panel display of iSpring RCD100 allows for easy monitoring of the filter lifespan and provides timely reminders when a replacement is needed. The LED screen further offers a real-time temperature display and low water level reminders, providing a complete picture of the filtration status. Access fresh water with a single touch and customize the drinking experience with four temperature modes. Notes: Press and hold the "Room Temp" button to override the cycle limit and dispense water continuously or until the filtered water tank is empty, whichever comes first. Press the same button again to exit override mode.
- [Low Maintenance] - The RCD100's twist-and-lock design makes filter replacement a breeze. This reverse osmosis system countertop also has an automatic self-cleaning mode. In this way, the countertop Reverse Osmosis system automatically initiates a flush sequence upon first-time use. After filling the tank, this RO water filter flushes for 30 seconds. All features work together to provide peace of mind and confidence when drinking water
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- [No Installation & High Efficiency] - This iSpring RCD100 countertop Reverse Osmosis system does not need any plumbing or installation. Simply plug it in and start enjoying clean drinking water right away. This Reverse Osmosis countertop is suitable for use in any location with an available power outlet, including offices, bedrooms, kitchens, RVs, and more. With 100 GPD capacity, this RCD100 is perfect to meet the needs of small to medium families. The advanced wastewater circulation technique also enhances the filtration performance, achieving a 2.5:1 pure to drain water ratio. Water flow rate: 0.16 GPM.
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#4
26% Off
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- NSF/ANSI 58 certified with a 6-stage filtration system that removes up to 99% of over 1,000 contaminants, including chlorine, fluoride, lead, and arsenic, ensuring safe drinking water.
- Includes a specialized alkaline remineralization stage to restore essential minerals and maintain natural alkalinity for improved taste compared to standard 5-stage systems.
- Features low maintenance with transparent housing for easy visual checks, long-lasting pre-filters, and a final polishing filter for enhanced water quality.
- Designed for easy DIY installation with all necessary components included, supported by clear instructions and lifetime technical support for leak-free setup.
- Backed by a 1-year warranty and lifetime support, this reliable system provides high-quality drinking water at home, reducing plastic waste.
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- NSF/ANSI 58 certified with a 6-stage filtration system that removes up to 99% of over 1,000 contaminants, including chlorine, fluoride, lead, and arsenic, ensuring safe drinking water.
- Includes a specialized alkaline remineralization stage to restore essential minerals and maintain natural alkalinity for improved taste compared to standard 5-stage systems.
- Features low maintenance with transparent housing for easy visual checks, long-lasting pre-filters, and a final polishing filter for enhanced water quality.
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#5
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- 3-stage filtration system with PP sediment filter, activated carbon cartridge, and reverse osmosis membrane, suitable for both residential and mobile use.
- RO membrane with 0.0001-micron pore size removes over 99.99% of harmful contaminants, including TDS, chlorine, lead, and heavy metals, making it ideal for tropical fish and other aquatic environments.
- Equipped with a built-in pressure gauge for easy monitoring of system performance and timely membrane replacement.
- Produces up to 100 gallons of purified water daily, with a T-faucet diverter for simultaneous use of tap and RO water.
- Nearly pre-assembled for quick installation, requiring only about 10 minutes with included user manual and all necessary components.
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- 3-stage filtration system with PP sediment filter, activated carbon cartridge, and reverse osmosis membrane, suitable for both residential and mobile use.
- RO membrane with 0.0001-micron pore size removes over 99.99% of harmful contaminants, including TDS, chlorine, lead, and heavy metals, making it ideal for tropical fish and other aquatic environments.
- Equipped with a built-in pressure gauge for easy monitoring of system performance and timely membrane replacement.
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#6
13% Off
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- 4-stage reverse osmosis water filtration system with 0.0001 micron precision, effectively removes arsenic, lead, fluoride, mercury, cadmium, and more; ideal for aquariums and residential use
- Deionization filter uses mixed bed ion exchange resin to further reduce total dissolved solids (TDS) to near 0 ppm
- System capacity of 100 gallons per day at 60 psi, producing approximately 260 ml per minute; NSF-certified RO membrane ensures healthy, pure water with a 1:2 pure to waste water ratio
- Includes quick connect fittings, color-coded tubes, and a detailed installation manual for simple DIY setup; no professional installation required
- Compact and versatile design suitable for apartments, RVs, and travel, providing access to pure water without needing a faucet or tank
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- 4-stage reverse osmosis water filtration system with 0.0001 micron precision, effectively removes arsenic, lead, fluoride, mercury, cadmium, and more; ideal for aquariums and residential use
- Deionization filter uses mixed bed ion exchange resin to further reduce total dissolved solids (TDS) to near 0 ppm
- System capacity of 100 gallons per day at 60 psi, producing approximately 260 ml per minute; NSF-certified RO membrane ensures healthy, pure water with a 1:2 pure to waste water ratio
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#7
10% Off
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- 6-Stage Reverse Osmosis system effectively reduces contaminants such as arsenic, lead, fluoride, mercury, and more, with a filtration capability down to 0.0001 microns.
- Equipped with a 6th stage Mineral Filter that reintroduces essential minerals like calcium, magnesium, and potassium for improved taste.
- Includes NSF-certified components: quick push fittings, storage tank, and RO membrane ensuring safe and pure drinking water.
- Capable of producing 75 gallons per day; compatible with most under-sink cabinets; features a 2.8-gallon tank with a 1:2 pure water to wastewater ratio.
- User-friendly installation with color-coded tubing and comprehensive video instructions, eliminating the need for professional help.
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- 6-Stage Reverse Osmosis system effectively reduces contaminants such as arsenic, lead, fluoride, mercury, and more, with a filtration capability down to 0.0001 microns.
- Equipped with a 6th stage Mineral Filter that reintroduces essential minerals like calcium, magnesium, and potassium for improved taste.
- Includes NSF-certified components: quick push fittings, storage tank, and RO membrane ensuring safe and pure drinking water.
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#8
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- Constructed with high-quality polyamide composites to ensure safe drinking water by effectively removing impurities.
- Made from 100% food-grade composite material that meets NSF/ANSI 58 standards for safe drinking water, ensuring high permeability.
- Achieves a desalination rate of up to 97%, effectively eliminating heavy metals, organic materials, and harmful minerals from water.
- Compatible with various standard sizes (50GPD to 600GPD) for easy replacement in most reverse osmosis filtration systems.
- Packaged dry to extend shelf life, with a typical lifespan of 24-36 months based on water quality and usage.
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- Constructed with high-quality polyamide composites to ensure safe drinking water by effectively removing impurities.
- Made from 100% food-grade composite material that meets NSF/ANSI 58 standards for safe drinking water, ensuring high permeability.
- Achieves a desalination rate of up to 97%, effectively eliminating heavy metals, organic materials, and harmful minerals from water.
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#9
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- Reduces over 1,000 water pollutants, including 98% of lead, chlorine, and fluoride, ensuring high water purity by eliminating total dissolved solids (TDS).
- Incorporates innovative pump technology for consistent filtration performance, suitable for applications like aquariums, laboratories, and dental facilities even in low-pressure conditions.
- Features a high-performance 150 GPD RO membrane for rapid water filtration that meets demanding efficiency needs.
- Includes a specialized deionization filter that provides exceptional removal of various contaminants, achieving water with zero or near-zero TDS.
- Backed by a 30-day money-back guarantee and a 1-year limited warranty, with dedicated customer support from the USA.
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- Reduces over 1,000 water pollutants, including 98% of lead, chlorine, and fluoride, ensuring high water purity by eliminating total dissolved solids (TDS).
- Incorporates innovative pump technology for consistent filtration performance, suitable for applications like aquariums, laboratories, and dental facilities even in low-pressure conditions.
- Features a high-performance 150 GPD RO membrane for rapid water filtration that meets demanding efficiency needs.
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#10
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- Reverse osmosis system designed for aquariums
- Available in three stages for effective filtration
- Compatible with tropical fish, marine fish, and discus
- Features three membrane options: 50, 75, or 100 GPD
- 100 GPD membrane offers high water purification capacity
- Designed for both freshwater and saltwater systems
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- Reverse osmosis system designed for aquariums
- Available in three stages for effective filtration
- Compatible with tropical fish, marine fish, and discus
- Features three membrane options: 50, 75, or 100 GPD
- 100 GPD membrane offers high water purification capacity
- Designed for both freshwater and saltwater systems
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