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Water Filtration Guides & Resources

Expert tips, product guides, and insights on water for a cleaner lifestyle at home and outdoors.

How to Read PFOS and PFOA Water Filter Test Reports

How to Read PFOS and PFOA Water Filter Test Reports

  • by Pete Miller — Purewell Water Specialist
A “PFOS/PFOA tested” report answers a narrow question. Learn the six fields to check before trusting a filter claim.

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"What Can Gravity Water Filters Reduce? An Evidence Guide to the Claims"

"What Can Gravity Water Filters Reduce? An Evidence Guide to the Claims"

  • by Pete Miller — Purewell Water Specialist
Direct answer: What a gravity water filter reduces depends on the exact cartridge, the target contaminant, the test method, and the conditions — not on the brand or the tank. A responsible claim names all four. This guide shows how...

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PFAS Water Filter Claims: A UK Buyer’s Evidence Checklist

PFAS Water Filter Claims: A UK Buyer’s Evidence Checklist

  • by Pete Miller — Purewell Water Specialist
PFAS evidence guide / UK A practical way to check the exact cartridge, named substances, test conditions, capacity and maintenance evidence before you buy. By Pete Miller — Purewell Water SpecialistPrepared 23 September 2026 6 checksModel · substance · evidence...

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Purewell countertop reverse osmosis water filter

Countertop Reverse Osmosis Water Filters UK: What They Remove, Cost & Which to Choose

  • by Pete Miller — Purewell Water Specialist
By Pete Miller — Purewell Water Specialist · Updated September 18, 2026 Countertop reverse osmosis water filters in the UK at a glance A countertop reverse osmosis (RO) water filter is the most thorough point-of-use option you can run without...

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Does a Water Filter Remove PFAS? Carbon, RO & Gravity Compared

Does a Water Filter Remove PFAS? Carbon, RO & Gravity Compared

  • by Pete Miller — Purewell Water Specialist

Not all filters tackle PFAS. See which technologies (activated carbon, RO, gravity) actually reduce "forever chemicals" — and what to check.

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PFAS in London Tap Water 2026: Levels, Risks & What Actually Helps

PFAS in London Tap Water 2026: Levels, Risks & What Actually Helps

  • by Pete Miller — Purewell Water Specialist
  • 1 comment

Are there PFAS in London tap water in 2026? Latest monitoring, health context and the filters that reduce 'forever chemicals'.

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Thames Water PFOS Trial: What London Households Should Know

Thames Water PFOS Trial: What London Households Should Know

  • by Pete Miller — Purewell Water Specialist

Thames Water and UK suppliers face growing PFOS/PFAS scrutiny. Understand what it means for your tap water and how filtration helps.

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