Water quality is our primary metric. Every product is evaluated on what matters most — how clean the water coming out actually is, based on certifications, manufacturer specs, and independent lab data.
We overhauled our scoring system to put water quality at the centre of every review. The most important question is simple: how clean is the water this filter produces?
Our overall score now weights water quality metrics at 85%. Secondary factors like design, maintenance, and price still appear — they're useful context — but they don't drive the headline number.
How effectively does the filter remove contaminants? Evaluated against removal rates for chlorine, heavy metals, PFAS, bacteria, limescale, and microplastics from NSF/ANSI certification data and manufacturer specs.
50% of overall scoreDoes the filter produce water at a healthy pH? We evaluate the expected output pH range. Filters that maintain or restore water to the 6.5–8.5 optimal range score higher here.
20% of overall scoreDoes the filter preserve or restore beneficial minerals like calcium and magnesium? Filters with remineralisation stages or those that don't strip minerals score higher.
15% of overall scoreThese factors are still scored and shown on every product page — they matter for practical decisions. But they are not part of the primary headline score.
Construction quality, aesthetic appeal, space efficiency, and whether the unit fits standard European kitchen dimensions and plumbing configurations.
How easy is filter replacement? How often? Are replacement parts available in Europe? Can a non-technical person install and maintain it?
Upfront cost, ongoing filter replacement costs, and cost per litre over the expected lifespan. We calculate the true 3-year cost of ownership.
How fast does the filter produce water? Shown as supplementary context but not scored — flow rate is a practical consideration, not a quality metric.
Our scores — for both primary water quality metrics and the overall score — map to these tiers:
| Score Range | Rating | What It Means |
|---|---|---|
| 9.0 – 10.0 | Excellent | Best in class. Highly recommended for most households. |
| 8.0 – 8.9 | Very Good | Strong performer with minor trade-offs. Recommended. |
| 7.0 – 7.9 | Good | Solid option for specific use cases. Worth considering. |
| 6.0 – 6.9 | Adequate | Gets the job done but better options exist at the price point. |
| Below 6.0 | Not Recommended | Significant issues that make it hard to recommend. |
AquaReach is specifically designed for people living in the Mediterranean. That means our reviews account for factors that generic review sites ignore:
AquaReach earns revenue through affiliate links. When you purchase a product through our links, we may receive a commission at no extra cost to you. This does not influence our scores or rankings. See our full affiliate disclosure for details.
Each product goes through a structured evaluation process:
Have questions about our methodology? Want to suggest a product for review? Email us at aquareach@polsia.app.
Positive stories about rivers, restoration, and clean water across the Mediterranean and beyond.
The Council of the EU officially adopted the European Water Resilience Strategy, committing to restore rivers, lakes, and wetlands and guaranteeing clean, affordable water for all Europeans by addressing pollution at the source.
wareg.org ↗Eight obsolete river barriers were removed at Plitvice Lakes National Park — the first dam removals in Croatia's history — reconnecting 7.6 km of river and restoring habitat for the endangered Danube trout.
damremoval.eu ↗A 30-metre dam on the Liri River was dismantled by Rewilding Apennines, freeing over 11 km of waterway. Thousands of juvenile Mediterranean trout were released to repopulate the restored river.
rewildingeurope.com ↗MedINA published Greece's first practical roadmap for removing river barriers — a critical step that unlocks funding and policy support for dam removal across the Mediterranean region.
med-ina.org ↗Authorities in Spain's Basque Country began breaking down a 43-metre-high dam on the Leitzaran River — one of the largest obsolete dams in Europe — letting the river flow freely for the first time in decades. The EU-backed LIFE Kantauribai project will reconnect fish habitats and restore the ecosystem.
euroweeklynews.com ↗A landmark report found 23 countries removed river barriers in 2024 — up 11% year-on-year. Spain dismantled 96 dams, France 128, Finland 138, bringing the EU closer to its goal of 25,000km of free-flowing rivers by 2030.
theguardian.com ↗The European Commission adopted the European Water Resilience Strategy in June 2025, with the European Investment Bank pledging €15 billion (2025–2027) for water restoration. The strategy sets a path to clean, affordable water for all Europeans by 2050.
environment.ec.europa.eu ↗