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Water Filtration Guides & Resources

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

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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Countertop Water Filters UK: Gravity vs RO — Which Is Right for You?

  • by Pete Miller — Purewell Water Specialist
By Pete Miller — Purewell Water Specialist · Updated September 18, 2026 Countertop water filters in the UK at a glance A countertop water filter sits on your worktop and treats water at the point of use, but the label...

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Water Filter Certifications: NSF 42, 53, 58 & 372

  • by Pete Miller — Purewell Water Specialist
Evidence guide / US edition What NSF/ANSI 42, 53, 58 and 372 tell you—and how to verify the claim on the filter you actually buy. By Pete Miller — Purewell Water Specialist · Published September 17, 2026 42Taste & odor...

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Purewell vs Berkey: Filters, Costs & Buying Guide

  • by Pete Miller — Purewell Water Specialist
Comparison guide / US edition A practical comparison of filter options, everyday use and the evidence to check before you buy. By Pete Miller — Purewell Water Specialist · Published September 17, 2026 AI-assisted kitchen illustration based on a Purewell...

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Water Filtration System for Home: How to Choose the Right Type

Water Filtration System for Home: How to Choose the Right Type

  • by RENJIE

Choosing the right water filtration system depends on your water source, filtration goal, available space, and daily water use. This guide compares gravity, reverse osmosis, under-sink, whole house, and portable systems so you can choose a practical setup for...

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Ceramic Water Filters: How They Work & What They Remove

  • by Pete Miller — Purewell Water Specialist

How ceramic water filters work, what they reduce (sediment, particles) and what they can't (PFAS, chlorine) — plus ceramic vs carbon and RO compared for UK homes.

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Best Gravity Water Filter UK: What to Look for in 2026

  • by Pete Miller — Purewell Water Specialist

Compare gravity water filter systems for UK homes: filtration media, capacity, flow rate, running cost and replacement filters — plus which size suits your household.

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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

  • 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

  • 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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Gravity Water Filter Systems Compared: Berkey, BOROUX, Alexapure & Purewell

  • by Purewell
Compare the best gravity water filter systems of 2026. Purewell vs Berkey, Boroux, ProOne, Alexapure, Waterdrop, Doulton & Culligan — why a 0.01-micron UF membrane matters, and how to pick the right size.

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Non-Electric vs. Electric RO Systems: What Homeowners Should Know

Non-Electric vs. Electric RO Systems: What Homeowners Should Know

  • by RENJIE

Most high-flow tankless RO systems use electricity for booster pumps, monitoring, auto-flushing, or smart features. Non-electric RO systems use household water pressure instead, which can reduce power needs and pump noise but may depend more heavily on local water...

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