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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 Purify Water Without Power: UK Emergency Options

How to Purify Water Without Power: UK Emergency Options

  • by Pete Miller — Purewell Water Specialist
By Pete Miller — Purewell Water Specialist · Last Updated: October 2026 A power cut doesn't usually stop your tap, but it can knock out the pumps and treatment steps that keep water safe — and it stops any electric...

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Be Ready UK: How Much Water to Store for 3 Days

Be Ready UK: How Much Water to Store for 3 Days

  • by Pete Miller — Purewell Water Specialist
By Pete Miller — Purewell Water Specialist · Last Updated: October 2026 The UK government's Be Ready campaign (launched by the Cabinet Office in October 2026) asks households to keep at least 72 hours of essential supplies. For drinking water...

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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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"Is a 2.25-Gallon Gravity Water Filter Right for Your Household?"

"Is a 2.25-Gallon Gravity Water Filter Right for Your Household?"

  • by Pete Miller — Purewell Water Specialist
Direct answer: A 2.25-gallon countertop gravity filter is a common size for household drinking and cooking water. Among the in-stock 2.25-gallon systems here, the BO Series 2.25 documents a household guidance of roughly 3–5 people. Whether it fits your home...

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"Berkey Alternative Evidence Checklist: How to Verify What a Gravity Filter Actu

"Berkey Alternative Evidence Checklist: How to Verify What a Gravity Filter Actually Reduces"

  • by Pete Miller — Purewell Water Specialist
Direct answer: When you shop for a "Berkey alternative," the single most useful step is not picking a brand — it is verifying the claim. A defensible gravity-filter claim names the exact filter model, the specific substance it was tested...

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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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Purewell countertop reverse osmosis water filter

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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Purewell K Series gravity water filter

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

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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