Water
Filtration, storage, sourcing, and treatment. The fastest-failing prep gap for most households — and the cheapest one to fix. Curated guides for everyone from "I should probably store some" to "I source from rainwater off-grid."
Editor's pick this week
Why we picked this
Cuts through the marketing noise on gravity filters. The 12-minute primer to start with.
Berkey filters: a beginner's first hour
All curated · 47 videos
Quick reference
The element-cleaning routine most beginners skip.
Cleaning your filter elements without ruining them
Deep dive
What actually keeps drinkable for 5 years.
Long-term water storage: the 5-year reality
Quick comparison
Side-by-side test in real conditions.
Sawyer Mini vs LifeStraw — bug-out bag
Build guide
DIY rainwater under $300 with parts list.
Rainwater capture for the suburban backyard
Under 5 min
The bleach ratio every prepper should memorise.
Emergency water disinfection: the 8-drop rule
Editor's note
“If you only have a weekend and $200, fix water before anything else. It's the prep with the highest ratio of survival impact per dollar.”
— Cockroach editorial
For families
How much water a household really needs — actual math.
Water budgeting for a family of four
Setup walk-through
Counter-top reverse osmosis without plumbing changes.
RO water for apartments and rentals
Long form
A working homestead well system from drilling to daily use.
Drilling and maintaining a homestead well
Common mistake
Why most barrel setups fail at year three.