Water
Water Security at Home
Water is the most time-critical gap. You can manage three weeks without food. You get three days without water. Kate started here, and most people should too.
What's your water priority?
3 questions. Kate will point you to the right solution.
What's your main water concern?
“I bought my gravity filter after a two-day burst pipe left us relying on bottled water. It cost me £189. That's the most useful £189 I've spent on this house.”
— Kate, SelfSufficientNow
Water Guides
Guide
Best Gravity Water Filter 2026: Berkey Alternatives, British Berkefeld, and Sawyer
British Berkefeld is the best gravity water filter for UK homes after Berkey's bankruptcy. Alexapure Pro wins for the US. 4 ceramic filters compared.
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Best Gravity Water Filter USA 2026: Alexapure Pro, ProOne, and Berkey Alternatives
Alexapure Pro is the best gravity water filter USA buyers need since Berkey's bankruptcy. ProOne Big+ is the backup pick. 4 ceramic options compared.
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How Much Water Should Your Family Store? The Real Calculation
Answering how much water to store emergency supplies: 5–6 litres per person per day, 2-week target. The 1 litre/day official guidance is dangerously low.
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How to Store Drinking Water Long-Term: Containers, Rotation, and What Kate Learned
Food-grade HDPE containers and 6-month rotation — that's how to store water long term at home. Kate's containers, schedule, and the year-one mistakes to avoid.
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How to Store Drinking Water Long-Term: US Containers, Rotation, and What Kate Learned
How to store water long term usa-style: 5-gallon HDPE jugs, cool storage, 6-month rotation. Kate's complete guide for American households and climates.
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Water Purification Methods Compared: Filters, Tablets, Boiling, and UV
Gravity filter plus boiling covers 95% of home emergencies. Kate ranks all water purification methods: filters, tablets, UV, boiling — what to use and when.
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Rainwater Harvesting: What's Legal, What Works, and Is It Worth It?
Worth it for gardens; not for drinking — Kate's verdict on rainwater harvesting in the UK and US. Legal rules by state and country, what equipment works.
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Best Water Storage Containers: Barrels, Tanks, and Stackable Jugs Compared
WaterBOB for 100 gallons in a bathtub; 25-litre stackable bricks for daily rotation — Kate's guide to water storage containers by household setup.
Read guide →Not sure which gap to close first?
The full quiz covers all five pillars — water, power, food, emergency planning, and warmth.
Take the Full Quiz