When normal services collapse, disease becomes the real boss. In any SHTF (shit-hits-the-fan) situation, small hygiene habits do more to save lives than heroics. Here’s a simple, no-frills guide to keep illness from spreading through your group.

Make hand hygiene non-negotiable. Most crisis-borne illnesses—diarrheal diseases, respiratory bugs, skin infections—ride on dirty hands. Create a handwash station near the cooking area and another near the latrine. Use soap and clean water; when water’s tight, use alcohol-based sanitizer (≥60% alcohol). Wash before preparing food, before eating, after toileting, after handling trash, and whenever you return from tasks.

Guard your water like medicine. Safe water is the backbone of disease prevention. Boil water rolling for at least one minute (longer at high altitudes). If fuel is scarce, use reputable filters rated for bacteria and protozoa, and add a chemical step (chlorine or iodine tablets) as directed. Store purified water in clean, sealed containers—label them and keep them off the ground.

Separate the dirty from the clean. Create zones: sleeping, cooking, washing, and waste. Don’t let wastewater or trash creep near food prep. Keep animals (and pests) out of living and kitchen spaces. Elevate gear on pallets and maintain clear footpaths to cut down mud and contamination.

Build a basic latrine the right way. Place it downhill and at least 200 feet from water sources and 200 feet from the kitchen. Cover each use with a scoop of soil or ash to control odor and flies. Provide a handwash setup right outside. Post simple instructions so everyone understands the routine—even kids.

Control vectors early. Flies, mosquitoes, and rodents spread disease fast. Remove standing water, bag and cover trash, and set traps. Use netting for sleep areas if mosquitoes are active. Keep food sealed; clean spills immediately.

Keep food safe. Cook thoroughly, eat hot, and cool rapidly. Don’t mix raw and cooked foods or reuse unwashed cutting boards. If in doubt, throw it out—food poisoning can cripple your team.

Clean smart, not hard. Daily wipe-downs of high-touch surfaces (door handles, tables, latrine touchpoints) with a disinfectant go further than occasional deep cleans. Wear gloves for dirty tasks; wash hands after removing them.

Quick checklist

Soap, sanitizer, and a handwash station

Water treatment method + labeled storage

Latrine set up correctly with ash/soil cover

Trash sealed and removed from camp

Daily surface disinfection and pest control

In chaos, consistency wins. Keep the routines tight, and disease won’t get the upper hand.