Royal Army College

Lesson Overview

Water is the third survival priority, after protection from the elements and being found, and ahead of food. The elements can kill in hours and food is weeks away, but a person without water dies in days. This lesson covers the two halves of meeting that priority: finding water, and making it safe to drink. Both matter. Water you cannot find is no use, and water you find but drink unsafe can cause illness as dangerous as the thirst it was meant to relieve. The field-health course (MED 210) teaches treatment in depth; this lesson sets the framework.

By the end you will be able to explain why water is a high priority and why dehydration is dangerous; describe where to look for water and which sources to seek; explain why found water must usually be treated and how; and apply water discipline to manage hydration for yourself and your group.

Key Terms

Water as a survival priority: the third priority, after protection from the elements and being found, since lack of water kills in days, before food but after the elements.
Dehydration: the body's lack of water. It impairs the body, judgement, and will before, in days, it kills.
Finding water: locating water by knowing where it collects and seeking the likely sources.
Making water safe: treating found water so it will not make you ill. Taught in depth by the field-health course.
Unsafe water: water carrying harmful organisms or substances that can cause illness. Much found water, especially surface water, is unsafe untreated.
Water discipline: the sensible management of hydration and limited supply, for yourself and the group.

Why water is a high priority

Water ranks third because lack of it kills in days, faster than hunger and behind only shelter and being found. Attend to it accordingly: after protecting yourself from the elements and signalling to be found, and before food.

The danger is not only death. Long before dehydration kills, it weakens the body and clouds judgement and will, so a dehydrated person thinks and acts less effectively at the very moment survival demands their best. That is why you do not wait until you are badly dehydrated to act. Drink early, maintain hydration where water allows, and keep body and mind sharp rather than racing to avoid collapse.

Finding water

Finding water comes down to knowing where it gathers and going to it.

Surface water, streams, rivers, ponds, and lakes, is the most obvious and usually the most available source, though it nearly always needs treating. Water flows downhill and collects in low places, so read the land and follow it down: valleys and depressions are where to look. Rain can be caught as it falls and is often safer than surface water. Other sources, dew and the moisture held in some plants, may help in some conditions but are limited and call for knowledge. The detailed craft of reading ground for water and collecting it is taught and practised in the field, drawing on Navigation and Fieldcraft (FLD 201).

Found water, however, is rarely ready to drink. Surface water in particular carries contamination, which brings us to the second half of the priority.

   MEETING THE WATER PRIORITY (3rd: after elements + being found)

   Why high: lack of water KILLS in DAYS; dehydration IMPAIRS body &
   judgement BEFORE it kills -> attend early; maintain hydration.

   1. FIND WATER:
      - SURFACE water (streams, ponds, lakes): flows downhill &
        collects in LOW GROUND; follow the land down
      - RAIN: collect as it falls (often safer than surface water)
      - other sources (dew, etc.): limited, need knowledge
   2. MAKE IT SAFE (most found water, esp. surface, is UNSAFE
      untreated; can cause ILLNESS as dangerous as the thirst):
      - field-health course (MED 210) teaches treatment IN DEPTH
        (BOILING is the most reliable common method)
      - rule of thumb: treat found water unless sure it is safe;
        BALANCE against severe dehydration with judgement.

   WATER DISCIPLINE: maintain hydration where water allows; manage
   limited water wisely. For oneself AND the group.

Making water safe

Much found water, especially surface water, carries harmful organisms or substances. Drink it untreated and you risk an illness that, in a survival situation, can be as dangerous as the thirst it was meant to relieve: it weakens you, causes further fluid loss, and worsens your position. So treat found water before you drink it.

The most reliable and common method is boiling. Bringing water to the boil kills the organisms that cause illness, and any soldier who can make fire (Lesson 05) can do it. Other methods exist, taught in the field-health course, but boiling is the one to know first and the one fire makes possible.

The rule is simple: treat found water unless you are sure it is safe. There is one judgement to weigh. In extreme dehydration the immediate need for water may outweigh the risk of unsafe water; short of that, make it safe first. The field-health course (MED 210) teaches the methods and this judgement in depth, and you should draw on it.

Water discipline and the group

Water discipline is the sensible management of hydration and supply. Where water is plentiful, maintain hydration: drink enough to keep body and mind effective, since dehydration impairs before it kills. Where water is scarce, make it last and do not waste it. Neither under-drink when you can afford not to, nor squander a limited supply.

You apply this for the whole group in your care, not yourself alone. Find and treat water for all of them and manage the group's hydration sensibly, because the water priority threatens everyone and the leader answers for those in their charge.

In Practice: Finding Water and Making It Safe

A soldier of the Royal Kaharagian Army has sheltered their group from the elements and set out signals to be found. Water is the next task.

Reading the ground, they follow the land down to the low places and find a stream, the most available source here, and catch rain as it falls. But they know surface water is rarely safe untreated, so before anyone drinks they boil it over the fire they have made (Lesson 05), killing the organisms that would otherwise cause illness. No one drinks the stream untreated: the soldier understands that such illness can weaken the group as badly as thirst would.

They then manage the supply. With water at hand, everyone drinks enough to stay effective; were it scarce, they would ration it carefully. Contrast a soldier who could not find water and faced dehydration, or who drank it raw and fell ill: either fails the group. By finding water, treating it, and managing hydration for all, this soldier meets the priority and keeps the group fit to carry on.

Check Your Understanding

Explain why water is the third survival priority and why dehydration is dangerous. Why does it impair the body and judgement before it kills, and why should a soldier not wait until severely dehydrated to act?
Describe where to look for water and which sources to seek. Why does following the land toward low ground often lead to water, and why is found water, especially surface water, usually not safe to drink?
Explain why found water must usually be treated and why boiling is the most reliable common method. What is the judgement between the risk of unsafe water and the urgency of severe dehydration? Then explain water discipline and meeting the priority for the group.

Reflection (write a short paragraph): Treating water before drinking it takes patience, and that patience is hardest exactly when you are thirsty. Be honest with yourself: when parched, would you wait to boil water, or would the urge for immediate relief tempt you to drink it raw and risk illness? Consider why the delay is worth it, that illness from unsafe water can worsen your situation as much as the thirst, while remembering the one exception, that extreme dehydration can outweigh the risk. Describe one way you could build the discipline to do the patient, safe thing over the immediate, comfortable one.

Summary

Water is the third survival priority, after the elements and being found and before food, because lack of it kills in days. Dehydration also impairs body and judgement before it kills, so attend early and maintain hydration rather than racing to avoid collapse.
Find water by knowing where it gathers: surface water in low ground where it flows and collects; rain caught as it falls, often safer than surface water; and limited sources like dew. The craft is practised in the field with Navigation and Fieldcraft (FLD 201).
Treat found water before drinking, because much of it, especially surface water, carries contamination that can cause illness as dangerous as the thirst. Boiling is the most reliable common method and is open to any soldier with fire. In extreme dehydration, weigh immediate need against the risk.
Apply water discipline: maintain hydration where water allows, ration it where it is scarce, and meet the priority for the whole group, not yourself alone.
This builds on the priorities of Lesson 02, uses the fire of Lesson 05 for boiling, and draws on Field Health, Hygiene, and Sanitation (MED 210) for treatment in depth. Fire (Lesson 05) and food (Lesson 06) follow.

Water: Finding It and Making It Safe