In the field, after providing shelter, you should accumulate a sufficient amount of drinking water, because without it you can't live more than a few days. It may happen, that you will have to camp in a place, where there is no safe and reliable source of fresh water. However, you can survive in the most critical situation by catching rainwater, picking up the dew, by digging a hole in the ground or by condensing water vapor emitted by plants. Water from precipitation, obtained from soil or plants, has this huge advantage over natural reservoirs, that it is almost always clean and does not require decontamination. It is best to collect such water at dawn.
Catching the rainwater
You should always set up rainwater tanks when camping. You should also try, so that the water that flows from the roof of a hut or other shelter is not wasted by soaking into the ground. A makeshift gutter can be made for this purpose, which rainwater will flow to a bucket placed under it or a hole dug in the ground and lined with plastic. Catching rainwater also makes sense then, when you crashed near a stream or river, as rainwater does not need treatment, nor cooking (unless there is acid rain in the area). A sheet made of waterproof material is best suited for catching rainwater, which should be stretched over as large an area as possible and tightened tightly. Attach the corners of the sheet to the ground with sticks, and collect the running water in a vessel.
The rainwater can be caught in a sheet of impregnated material stretched just above the ground. It should be so tense, so that the water would run in a stream to a vessel placed at one of the corners. During heavy rainfall, remember to change the vessel frequently, which is quickly filled with water.
The air cools down at night, and the water vapor condenses on the blades of grass, leaves and stems of shrubs or car windows. This morning dew evaporates instantly, as soon as the sun begins to shine in the sky. Lots of animals, plants and insects live because of the dew, using it to replenish the body's water reserves. Man can also follow in their footsteps.
1 You can collect the dew with a handkerchief, which, when placed on tall grass, will absorb the resulting moisture. Dew should be harvested at dawn, for after the sun rises, the droplets evaporate immediately. Many inhabitants of arid regions of the Earth have used this method for centuries.
2 The wet handkerchief should be wrung over the dish. We repeat this activity, until we get the right amount of water.
Digging a hole
If we dig a deep enough hole in wet or muddy ground, water will start to collect at its bottom. The hole should be approx 30 cm deep. When a lot of water collects in the hollow, we choose it with a bucket. Initially, the water will be very dirty, later, however, the well will begin to fill with cleaner water, which is drinkable after filtering.
Before you start digging a hole, take a look around. Never draw water from the ground, which smells musty, neither of the places, on the surface of which green sludge accumulates. Such water will certainly be contaminated. Also, do not collect water near places, where you came across carrion. Always clean the water, before you drink it.