Water in the field is not always safe to drink. We examine some of the problems that can exist, and we survey all lightweight water treatment methods for use against these problems. We also illustrate each method with at least one commercial product, but this is not meant to be a State of the Market survey of products.

Everyone needs to drink water when working. Yes, one can go for days (or weeks in some famous cases) without food, but after a few days without water, you die. However, not all water sources found in the wild are safe (and some at home are a bit questionable too!). So, in Part 1 of this series, we start by discussing what 'stuff' can be found in water sources and whether it is dangerous to you. While this will get a little technical in places, we will try to keep it comprehensible to all.

ARTICLE OUTLINE

  • Abstract
  • Introduction
  • Acknowledgements
  • The Risks - What's in the Water?
  • Dissolved but harmless materials
  • Suspended matter
  • Chemicals
  • 'Bugs and Wogs'
    • Viruses
    • Bacteria
    • Protozoa
    • Nematodes, helminths and larger
  • Is this the End of the Earth?

# WORDS: 5040
# PHOTOS: 17

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