Emergency field manual

Clean water first. Then stay found, sheltered, and ready.

A practical guide for hurricanes, floods, outages, and time outdoors—built around the priorities that keep a difficult situation from becoming a dangerous one.

Priority one

Making questionable water safer

Use commercially bottled water whenever possible. When that is unavailable, choose the cleanest source you can and treat it carefully.

Know when treatment is not enoughDo not drink water that may contain fuel, toxic chemicals, radioactive material, heavy metals, or salt. Boiling, bleach, and ordinary camping filters do not remove those hazards—and boiling can concentrate some chemicals. Use a different source and follow local health officials.

Settle and pre-filter

  1. Let cloudy water stand until sediment sinks.
  2. Carefully pour the clearer water into a clean vessel.
  3. Pass it through a clean cloth, paper towel, or coffee filter.

This improves clarity but does not make water safe by itself. Disinfect it next.

Boil

  1. Bring clear water to a full rolling boil.
  2. Keep it boiling for 1 full minute.
  3. Above 5,000 feet, boil for 3 minutes.
  4. Cool naturally and cover in a clean container.

Boiling is the most reliable household method for killing germs when fuel is available.

Disinfect with bleach

  1. Use only fresh, regular, unscented household bleach labeled for disinfection.
  2. Measure by the bleach strength shown on its label.
  3. Stir and wait 30 minutes.
  4. A slight chlorine odor should remain. If not, repeat the dose and wait 15 more minutes.

Never use scented, splashless, color-safe bleach, or products with added cleaners.

Use a certified filter

Read the label: filters differ. Many backpacking filters remove bacteria and protozoa but not viruses, salt, or chemicals. After filtering, disinfect when the source may contain viruses or sewage.

  • Protect the clean outlet from dirty hands.
  • Never cross-connect clean and dirty hoses.
  • Replace cartridges on schedule.

Use purification tablets

Chlorine, iodine, and chlorine-dioxide products have different strengths and wait times. Follow the package exactly. Cloudy or very cold water may require additional preparation or time.

Keep tablets sealed, dry, dated, and out of children’s reach.

Keep clean water clean

  • Use sanitized, food-grade containers with tight covers.
  • Label treatment date and source.
  • Pour—do not dip cups or hands into the container.
  • Keep stored water shaded, cool, and away from fuel or pesticides.
EPA emergency bleach guide for one gallon of clear water
Bleach strengthAmount per gallonContact time
6% sodium hypochlorite8 drops30 minutes
8.25% sodium hypochlorite6 drops30 minutes
Cloudy, colored, or very cold waterDouble the matching dose above30 minutes; repeat once if no slight chlorine odor

Measurements follow current U.S. EPA emergency guidance. Product formulas vary; always check the label and follow local boil-water or do-not-use notices first.

Field order

Use the four-step water workflow

A repeatable system prevents the clean side of your setup from becoming contaminated again.

1

Source

Choose bottled, stored, or the clearest available water away from fuel, runoff, dead animals, and sewage.

2

Clarify

Settle and pre-filter dirt so disinfection works better.

3

Disinfect

Boil, use the correct bleach dose, or follow a purification product label.

4

Protect

Store covered, label it, and keep clean tools separate from dirty-water tools.

Remember the survival priorities

Immediate hazards and serious bleeding come first. Then shelter from severe conditions, safe water, signaling, and food. “Rules of three” are memory aids—not deadlines—and weather, health, and exertion can change them dramatically.

Cordage

Four knots worth practicing before you need them

Practice with real rope until you can tie, dress, load, and untie each knot correctly. Never trust an unfamiliar knot for climbing or life safety.

Fixed loop

Bowline

Creates a loop that does not tighten under ordinary load. Useful for securing a line around a post, hauling light gear, or making a shelter anchor.

CheckTail exits inside the loop and has plenty of length.
BackupAdd a stopper knot when movement could shake it loose.
Adjustable

Taut-line hitch

An adjustable sliding hitch for tent and tarp guy lines. It grips when loaded but can be moved to retension a shelter.

Best useLines under steady, moderate tension.
AvoidSlick rope, critical loads, or rescue systems.
Fast anchor

Clove hitch

A quick way to begin or finish lashing around a pole. Easy to adjust, but it can slip or bind when the load shifts.

CheckBoth turns cross cleanly with no hidden twists.
BackupFinish with half hitches for security.
Mechanical advantage

Trucker’s hitch

Creates tension for securing a tarp or gear. Protect the rope from sharp edges and do not overtighten against fragile structures.

Best useRidgelines, loads, and tight shelter panels.
FinishLock with two half hitches.
Exposure control

Shelter, fire, and camp discipline

Stay dry, get out of wind, and reduce heat loss before spending energy on food.

Shelter

Choose the site before building

  • Stay above flood channels and below exposed ridgelines.
  • Look overhead for dead limbs, leaning trees, and power lines.
  • Use a ground barrier; insulation below matters as much as cover above.
  • Pitch the narrow end into prevailing wind and keep drainage outside.
Fire

Build small, controlled, and legal

  • Use existing fire rings when permitted and clear the surrounding area.
  • Prepare tinder, pencil-size kindling, then larger fuel before lighting.
  • Never use gasoline or burn indoors, in tents, or near generators.
  • Drown, stir, and feel for heat before leaving. If it is too hot to touch, it is too hot to leave.
Storm camp

Separate clean, dirty, and fuel zones

  • Keep water treatment upstream and uphill from washing and waste.
  • Store fuel and chemicals far from water and sleeping areas.
  • Keep food and scented items secured away from the shelter.
  • Mark guy lines and tools so they remain visible at night.
First aid

Stop, assess, and prevent a second casualty

  • Check scene safety before helping.
  • Control severe bleeding with firm direct pressure and call emergency services.
  • Protect injuries, prevent chilling, and monitor breathing and alertness.
  • Carry first-aid training farther than any written guide can.
Food procurement

Hunting, fishing, and wild-food judgment

In most short emergencies, shelter and safe water matter far more than food. Do not turn a manageable situation into an injury, weapons incident, or wildlife violation.

Law and safety still applyHunt or trap only with the required license, in an open season, with legal equipment and permission. Positively identify the animal and what is beyond it before any shot. Never fire toward roads, homes, people, or an unknown background.
Observation

Read sign; do not chase blindly

  • Tracks, droppings, bedding, rubs, feeding sign, and trails reveal travel patterns.
  • Move slowly, use cover, and keep wind moving from the animal toward you.
  • Mark your route and maintain a firm turnaround time.
  • Do not approach wounded or unfamiliar wildlife.
Fishing

Favor simple, legal methods

  • Fish at dawn, dusk, shaded structure, and current seams where legal.
  • Keep hooks covered and maintain distance from power lines.
  • Use gloves or tools around spines, teeth, and unfamiliar species.
  • Clean catches away from camp and water-treatment areas.
Food safety

Cook thoroughly and prevent contamination

  • Keep raw meat separate from ready-to-eat food and treated water.
  • Wash tools and hands with safe water.
  • Discard meat from animals that appear sick or were found dead.
  • When uncertain about a wild plant, mushroom, animal, or waterway advisory, do not consume it.
Energy

Carry dependable calories

Pack shelf-stable food that needs little water or cooking: nut butter, energy bars, canned fish or meat, crackers, and ready-to-eat meals. Preserve fuel and strength rather than gambling on an unfamiliar food source.

Get found

Signaling and navigation

Avoid wandering. Make a plan, leave it with someone, and make yourself easier to locate.

Signal

Use three of anything

  • Three whistle blasts, three light flashes, or three visible markers commonly signal distress.
  • Use a mirror or flashlight toward rescuers without aiming at vehicle operators.
  • Create high-contrast ground markings in an open area.
  • Conserve phone power; text location and status when networks are congested.
Navigation

Map, compass, landmarks

  • Download offline maps before storms and carry a paper backup.
  • Orient the map to terrain and confirm position with multiple landmarks.
  • Record bearings, time, distance, and major turns.
  • If lost and not in immediate danger: stop, think, observe, and plan before moving.

Official water-safety references

Local emergency management, health departments, water utilities, law enforcement, and wildlife agencies may issue instructions that are more specific to your location. Follow those instructions first.