Sergeants Time

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Sergeants Time Training Visitors Book
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Water Purification and Collection
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Visitors Sign-In Sheet
Name Rank Section Date
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Sign-In Sheet
Name Rank Section Date
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Task, Conditions and Standards

• Task Find and provide enough water to survive
  in any environment
• Condition Given a field environment using all
  available equipment.
• Standards Within allotted time setup an Above
  Ground Still, a Below Ground Still and a
  Filtration Device.
• Sources FM 21-76

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Water Sources

• Naturally occurring water sources
• Surface water
• Precipitation
• Subsurface water
• Indicators of possible water
• Abundant vegetation
• Drainage and low-lying areas
• Large clumps of plush grass
• Animal trails

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Water Collection
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Above Ground Still

• Conditions
• Sunny Slope
• Clear Plastic Bag
• Green Leafy Vegetation
• Small Rock

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Above Ground Still

• Construction
• Fill bag with air by turning the opening into
  the breeze or by scooping air into the bag
• Fill the plastic bag half to three-fourths full
  of green leafy vegetation. Be sure to remove all
  hard sticks or sharp spines that might puncture
  the bag.
• Caution
• Do not use poisonous vegetation. It will provide
  poisonous liquid.
• Place small rock or similar item in the bag

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Above Ground Still

• Close bag and tie the mouth securely as close
  to the end of the bag as possible to keep the
  maximum amount of air space. If you have a piece
  of tubing, a small straw, or a hollow reed,
  insert one end in the mouth of the bag before you
  tie it securely. Then tie off or plug the tubing
  so that air will not escape. This tubing will
  allow you to drain out condensed water without
  untying the bag.
• Place the bag, mouth downhill, on a slope in
  full sunlight. Position the mouth of the bag
  slightly higher than the low point of the bag.
• Settle the bag in place so that the rock works
  itself into the low point in the bag.

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Above Ground Still

• To get water from still, loosen the tie around
  the bags mouth so that the water collected
  around the rock will drain out. Retie the mouth
  securely and reposition the mouth securely and
  reposition to allow further condensation.
• Change the vegetation in the bag after
  extracting most of the water from it. This will
  ensure maximum output of water.

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Below Ground Still

• Conditions
• Digging Tool
• Container
• Poncho
• Drinking Tube
• Rock

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Below Ground Still

• Dig bowl-shaped hole about 1 meter across and
  60 cm deep
• Dig a sump in the center of the hole. The sump
  will be the size of the container that you are
  using
• Anchor the tubing to the containers bottom
• Place the container upright in the sump
• Extend the unanchored end of the tubing up,
  over, and beyond the lip of the hole

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Below Ground Still

• Place the poncho over the hole, covering the
  poncho with soil to hold it in place.
• Place a rock in the center of the poncho.
• Lower poncho into the hole until it is about
  40cm below ground level. Make sure the rock is
  directly over the container.
• Place soil around poncho to hold it securely
  and prevent loss of moisture.
• Plug the tube when not in use so that moisture
  will not evaporate.

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Below Ground Still

• If polluted water is your only source of
  moisture, dig a small trough outside the hole
  about 25cm from the stills lip. Dig the trough
  about 25cm deep and 8cm wide. Pour the polluted
  water in the trough.
• You will need at least three stills to meet
  individual daily water needs.

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Water Purification
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Water Purification

• Purify water from lakes, ponds, swamps, springs
  or streams, especially if the water is near human
  settlements or in the tropics.
• Purify water by
• Purification tablets
• Iodine
• Boiling water

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Water Purification

• By drinking non-potable water you may contract
  diseases or swallow organisms that can harm you
  such as
• Dysentery
• Cholera and Typhoid
• Flukes
• Leeches

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Water Filtration
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Water Filtration Devices

• If water is muddy, stagnant, and foul smelling,
  you can clear the water by
• Placing it in a container and letting it stand
  for 12 hours
• By pouring it through a filtering system
• Place several centimeters or layers of
  filtering material such as sand, crushed rock,
  charcoal in bamboo, a hollow log or an article of
  clothing.

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AAR
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Packing List

• ALICE Pack
• LBE (2 1-Quart Canteens Full)
• Kevlar (In ALICE Pack)
• E-Tool
• 2-Quart Canteen (Full)
• Soft Cap
• Poncho
• Cold Weather Gear
• Wet Weather Gear