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Outdoors · O02-01 · Water outdoors

Water Outdoors

Finding, filtering and boiling water on the trail, in a tent and in a camp after an earthquake

25 pages · 11 chapters · 6 worksheets · A4

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Levels this guide covers

72 hours2 weeks3 months1 year+

In short

  • On the trail, an adult needs 2–3 liters (about 2–3 US quarts) a day — more in the heat, on climbs and at altitude.
  • Plan your refills before you go — a spring on the map is no guarantee you'll find water in it.
  • Treat all water from nature: boiling, filter, tablets, UV or SODIS — and know what each method does not remove.
  • Don't ration the water you have — ration your sweat: walk in the cooler part of the day, rest in the shade.
  • Floodwater, water that smells of fuel and green, foamy water are not drinkable even after treatment.

What's inside

  1. 01How Much Water You Need on the Trail
  2. 02Planning Refills Before You Go
  3. 03Where to Find Water
  4. 04Water to Avoid
  5. 05Collecting Water
  6. 06Water Treatment: What Each Method Removes
  7. 07Carrying and Saving Water
  8. 08Water in Winter
  9. 09Water for a Family Camp After an Earthquake
  10. 10The Most Common Mistakes
  11. 11Printable Checklist

Worksheets (appendices)

  1. AI'm Out of Water — What First?
  2. BTreatment Decision Card
  3. CRefill Plan for the Route
  4. DEquipment by Priority
  5. ELocal Information Card
  6. FWorked Example — a Hike and a Camp for Four

Sources are listed on the last page of every guide.

A look inside

The guide's table of contents pageI'm Out of Water — What First?

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