Water Filter Buying Guide (UK)
Hard water, chlorine taste, limescale—here’s how to choose the right filter for your postcode and budget.
Start with your goal
Quick pick (if you only choose one)
Overall favourite: A UK-appropriate water filter that targets taste + common contaminants
👉 Start here: See the Water hub →
👉 Ready to buy? Best water filters (UK) →
Tip: if you’re comparing options, scroll to the Quick comparison section below.
Quick comparison
| What you want | Our pick | Why |
|---|---|---|
| Reduce PFAS/‘forever chemicals’ concerns | A filter certified for PFAS reduction | Look for third‑party testing/certifications |
| Improve taste & odour | A high‑capacity carbon filter | Biggest instant difference for most homes |
| Hard water scale | A limescale‑focused option | Helps kettles & appliances (and makes water nicer) |
Want the shortcuts? Explore the Water hub → • Best water filters (UK) →
- Taste & odour only: jug or tap‑mount carbon filter.
- Limescale: look for ion‑exchange or scale cartridges.
- Broad contaminant reduction: under‑sink carbon block or RO (reverse osmosis).
Types at a glance
- Jug/bench‑top: low cost, frequent cartridge changes.
- Under‑sink carbon block: good flow, multi‑point reduction.
- RO systems: most thorough; needs space, waste line, remineralisation for taste.
- Gravity systems: no plumbing; slow but reliable for chlorine/particulates.
UK specifics
- Most mains water is microbiologically safe; you’re optimising taste, scale and some by‑products.
- Check supplier water reports; decide if RO is warranted or overkill.
Maintenance matters
- Filters work only when replaced on schedule. Mark your calendar.
- Sanitise housings when changing cartridges.
FAQ
Kettle fur? A small in‑line scale filter or jug can dramatically reduce it.
Quick comparison (at a glance)
| Option | Best for | Why it works |
|---|---|---|
| Overall favourite | Most homes | Balanced performance, reliable materials, easy maintenance |
| Budget favourite | First-time swaps | Lower cost, fewer features, still meaningful improvement |
| Sensitive households | Allergy / chemical sensitivity | Fewer additives, lower emissions, simpler designs |
Last updated: January 24, 2026
Decision summary
If you want the fastest route to a good choice, use this:
- Overall favourite: start on /favourites and pick the option that matches your budget.
- Budget favourite: choose the simplest option that meets your core need (don’t overbuy).
- Best for sensitive households: prioritise low-fragrance / low-VOC / fewer additives.
👉 Want the shortcuts? Shop our favourites →
Looking beyond products? Explore our holistic health and nutrition guides for food-first wellness.
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