Sovereignty Module: Purify the Source
Complete Water Purification and Treatment: From Contaminated to Clean
Clean water is the most critical survival resource. This campaign covers contamination types, purification methods, filter construction, and water testing.
Chapter 1: Water Contamination
| Contaminant | Source | Health Risk | Size | Removal Method |
|---|---|---|---|---|
| Bacteria (E. coli, Cholera) | Fecal contamination | Diarrhea, dysentery, death | 0.2-5 microns | Filtration, boiling, chemical, UV |
| Viruses (Hepatitis A, Norovirus) | Fecal contamination | Liver disease, gastroenteritis | 0.02-0.1 microns | Boiling, chemical, UV (not most filters) |
| Protozoa (Giardia, Cryptosporidium) | Animal/human feces in water | Severe diarrhea | 1-15 microns | Filtration, boiling, UV |
| Parasitic worms | Contaminated water/soil | Various organ damage | Visible to microscopic | Filtration, boiling |
| Chemical (pesticides, heavy metals) | Agricultural/industrial runoff | Cancer, organ damage | Molecular | Activated carbon, distillation |
| Sediment | Erosion, runoff | Harbors pathogens | Variable | Settling, filtration |
| Turbidity | Suspended particles | Reduces disinfection effectiveness | Variable | Settling, filtration |
Chapter 2: Purification Methods
| Method | Bacteria | Viruses | Protozoa | Chemicals | Turbidity | Difficulty | Speed |
|---|---|---|---|---|---|---|---|
| Boiling (1+ min) | Yes | Yes | Yes | No | No | Very low | Moderate (fuel needed) |
| Chlorine (bleach) | Yes | Most | Some (not Crypto) | No | No | Very low | 30 min wait |
| Iodine | Yes | Most | Some | No | No | Very low | 30 min wait |
| Ceramic filter | Yes | No | Yes | No | Yes | Low | Slow (drip) |
| Hollow fiber filter | Yes | No | Yes | No | Yes | Low | Fast (pump/gravity) |
| Activated carbon | Some | No | No | Yes (many) | Some | Low | Fast |
| UV light (SteriPEN) | Yes | Yes | Yes | No | No | Very low | 1-2 min |
| Solar disinfection (SODIS) | Yes | Yes | Yes | No | No | Very low | 6-48 hours |
| Distillation | Yes | Yes | Yes | Yes (most) | Yes | Moderate | Very slow |
| Slow sand filter | Yes | Partial | Yes | Some | Yes | Moderate (build) | Slow (continuous) |
Chapter 3: Filter Construction
Bio-sand filter: 1) Container: 5-gallon bucket, barrel, or concrete box. 2) Bottom layer: 2 inches of washed gravel (1/4 inch). 3) Middle layer: 2 inches of coarse sand. 4) Top layer: 18-24 inches of fine sand (0.15-0.35mm). 5) Standing water: 2 inches above sand surface (must stay wet). 6) Outlet pipe: from bottom gravel layer, exits above sand level (controls water level). 7) Diffuser plate: placed above sand to prevent disturbing surface. 8) Biological layer (schmutzdecke) forms on sand surface over 2-3 weeks. 9) This biological layer is the primary purification mechanism. 10) Flow rate: 0.1-0.4 gallons per minute. 11) Removes 90-99% of bacteria, 99%+ of protozoa, 50-90% of viruses. 12) Must run continuously (don't let it dry out; kills the biological layer).
Activated carbon filter: 1) Make charcoal (hardwood, burned in low-oxygen environment). 2) Crush charcoal to small granules (not powder). 3) Activate: soak in calcium chloride solution or steam at high temperature (optional; improves absorption). 4) Pack crushed charcoal in tube or container (PVC pipe, bamboo, bottle). 5) Water flows through charcoal bed. 6) Removes: chlorine, many chemicals, some heavy metals, taste, odor. 7) Does NOT reliably remove bacteria or viruses. 8) Replace charcoal when taste/odor returns (absorption capacity exhausted). 9) Best used as final stage after biological or ceramic filtration.
Chapter 4: Emergency Methods
| Situation | Best Method | Backup Method | Time Required |
|---|---|---|---|
| Clear stream water | Filter + chemical treatment | Boiling | 30 min (chemical) or 5 min (boil) |
| Muddy water | Settle + filter + treat | Settle + boil | 2-4 hours (settle) + treatment |
| No fuel, no chemicals | SODIS (solar) | Improvised filter | 6-48 hours |
| Saltwater | Distillation (solar still) | None practical | Hours to days |
| Chemical contamination | Distillation or activated carbon | Avoid source | Hours |
Solar still (emergency): 1) Dig hole 3 ft wide, 2 ft deep. 2) Place collection container in center of hole. 3) Place tubing from container to outside hole (drinking tube). 4) Cover hole with clear plastic sheet. 5) Seal edges with soil (airtight). 6) Place small rock on plastic above container (creates low point). 7) Sun heats ground, moisture evaporates. 8) Moisture condenses on plastic (cooler surface). 9) Condensation drips into container. 10) Production: 1-3 cups per day (survival quantity only). 11) Can add vegetation or contaminated water to hole to increase output.
Chapter 5: Water Storage
| Container | Material | Capacity | Cost | Durability | Light Protection |
|---|---|---|---|---|---|
| Glass bottles | Glass | 1-5 gallons | Low | Fragile | Varies (clear = none) |
| Food-grade plastic | HDPE (#2) | 1-55 gallons | Low | Good | Good (opaque) |
| Stainless steel | Steel | 1-10 gallons | Moderate-high | Excellent | Excellent |
| Ceramic crock | Fired clay | 1-10 gallons | Moderate | Moderate | Excellent |
| IBC tote | HDPE | 275 gallons | Low-moderate | Good | Poor (translucent) |
| Cistern (concrete) | Concrete | 500-10,000+ gallons | High | Excellent | Excellent |
Reference Card
- Boiling is the gold standard (boiling for 1 minute kills all biological pathogens; if in doubt, boil). 2. Filter first, then treat (remove sediment and turbidity before chemical treatment or UV; particles shield pathogens). 3. No single method removes everything (combine methods: filter for protozoa + chemical for viruses + carbon for chemicals). 4. Clear water is not clean water (crystal-clear water can contain deadly bacteria and viruses; always treat). 5. Bio-sand filters need time (the biological layer takes 2-3 weeks to establish; don't expect full effectiveness immediately). 6. Activated carbon removes chemicals (charcoal filtration is the best field method for chemical contamination; but it doesn't kill pathogens). 7. Store water in the dark (light promotes algae growth; use opaque containers or store in dark location). 8. One gallon per person per day (minimum for drinking; 2-3 gallons when including cooking and hygiene; plan storage accordingly).