☀️ Solar Water Disinfection (SODIS) – UV Water Purification

🧰 WHAT YOU NEED

• 💧 Clear PET plastic bottles (1-2L, no scratches)
• 🌞 Strong sunlight (6+ hours full sun, 2 days if cloudy)
• 📏 Optional: Black surface (speeds up heating)

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⚡ HOW IT WORKS

✅ UV-A rays kill bacteria/viruses
✅ Heat (50°C+/122°F+) enhances purification

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🔧 SIMPLE STEPS

1. 🫙 Fill & Prep Bottles

• Use clear bottles (remove labels)
• Fill 3/4 full, shake to oxygenate

1. ☀️ Solar Treatment

• Lay bottles horizontally on dark surface
• Full sun: 6 hours
• Cloudy: 2 days

1. 🚰 Drink Safely

• Pour into clean cup to avoid recontamination

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⚡ BOOST EFFICIENCY

• Add lemon juice (helps kill pathogens faster)
• Pre-filter if water is murky (use cloth/sand filter)

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⚠️ IMPORTANT NOTES

• ❌ Not for chemical contamination
• ❌ Avoid colored/glass bottles
• ✅ Best for clear water only

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🎥 VIDEO GUIDES

1. SODIS Method Explained (WHO Standards)
   ▶️ Watch Here
2. DIY Solar Water Purification
   ▶️ Watch Here
3. SODIS vs Boiling – Survival Comparison
   ▶️ Watch Here
4. UV Water Purification Science
   ▶️ Watch Here
5. Emergency SODIS in 5 Minutes
   ▶️ Watch Here

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🌍 Perfect for: Emergency prep, camping, and off-grid living!