PRODUCT COMPARISON • JANUARY 2026
Two leading reverse osmosis brands compared. Real prices, honest pros and cons, and clear recommendations for UK homes.
For most UK buyers: Waterdrop - Local UK support, modern tankless design, faster filtration. For budget-conscious buyers: iSpring - £20-50 cheaper, proven 20+ year reliability. Both remove 99%+ of contaminants including lead, PFAS, and microplastics.
Current UK prices as of January 2026 (Amazon UK & direct)
| Model | UK Price | Type | Flow Rate | Best For |
|---|---|---|---|---|
| Waterdrop G3P800 | £449 | Tankless | 800 GPD | Large families |
| Waterdrop G3 | £399 | Tankless | 400 GPD | Most homes |
| Waterdrop D6 | £299 | Tankless | 600 GPD | Budget tankless |
| iSpring RCC7AK-UV | £329 | Tank | 75 GPD | UV sterilization |
| iSpring RCC7AK | £249 | Tank | 75 GPD | Best value |
| iSpring RCC7 | £199 | Tank | 75 GPD | Budget option |
* Prices from Amazon UK and manufacturer websites, January 2026. Prices may vary.
| Feature | Waterdrop | iSpring | Winner |
|---|---|---|---|
| Price Range | £299-£449 | £199-£329 | iSpring |
| Flow Rate | 400-800 GPD | 50-75 GPD | Waterdrop |
| Design | Tankless (compact) | Tank (larger) | Waterdrop |
| UK Support | Yes | US only | Waterdrop |
| Track Record | ~10 years | 20+ years | iSpring |
| Warranty | 2 years | 1 year | Waterdrop |
| Filter Cost/Year | £60-100 | £50-80 | iSpring |
| Contaminant Removal | 99%+ TDS | 99%+ TDS | Tie |
Modern, tankless RO systems with UK-based support. Higher upfront cost but faster filtration and space-saving design.
Best for:
UK homeowners who want modern design, local support, and don't mind paying a premium for the latest technology.
Proven, reliable RO systems with 20+ years track record. Better value but traditional tank design and no UK support.
Best for:
Budget-conscious buyers who value proven reliability and have adequate under-sink space. Good for smaller households.
For UK buyers in 2026, Waterdrop edges ahead due to local UK support, modern tankless design, and faster filtration speeds (400-800 GPD vs 50-75 GPD). However, iSpring offers better value at £20-50 less and has a proven 20+ year reliability track record. Choose Waterdrop for space-saving and UK support; choose iSpring for budget and proven reliability.
Yes, if you value UK-based customer support, space-saving tankless design, and faster water flow. The £100-150 premium gets you local warranty support, no storage tank to clean, and 5-10x faster filtration. For large families or those with limited under-sink space, Waterdrop's benefits justify the cost.
Yes. Both brands' RO systems remove 99%+ of TDS, lead, chlorine, fluoride, PFAS, and microplastics. Both are NSF certified. The difference is in design (tankless vs tank), flow rate, and support - not filtration effectiveness. Either brand will give you excellent water quality.
Waterdrop has a dedicated UK website (waterdropfilter.co.uk) with local customer support and UK warranty. iSpring is available on Amazon UK but has no dedicated UK presence - support goes through their US headquarters. For UK buyers, Waterdrop offers a smoother experience.
Annual filter replacement costs are similar: Waterdrop £60-100/year, iSpring £50-80/year. Waterdrop's tankless design uses slightly more electricity but produces less wastewater. Overall running costs are comparable at £80-120/year for either brand.
Our Recommendation for UK Homes (2026):
Waterdrop G3 (£399) is our top pick for most UK households - the combination of UK support, tankless design, and fast filtration makes it worth the premium. For budget buyers, the iSpring RCC7AK (£249) offers excellent value with proven reliability.
Disclaimer: Prices and specifications are accurate as of January 2026 and sourced from manufacturer websites and Amazon UK. We may earn a commission from purchases made through affiliate links at no extra cost to you. All technical claims are based on manufacturer specifications and NSF certifications.