PROTECTING YOUR WATER SUPPLY
PROTECTING YOUR WATER SUPPLY Rain and snow are the original sources of all our drinking water. Raindrops are formed from the heavy vapour arising from the sea. As clouds pass over the land, they condense into drops of rain or flakes of snow, depending upon the temperature of the atmosphere. We are all familiar with the fact that a rainstorm clears the air, washing it clean and free from dust and smoke. Raindrops are usually free from germs, although they may contain a little dust and perhaps a few harmless microbes. Trouble starts when the raindrops strike the surface of the earth. The rain that collects on cultivated fields, farmyards and city streets contains many different kinds of gems, some of which are harmful to man, many of these gems have come from the digestive organs of animals and human beings and may cause serious intestinal diseases. But the trouble is not always with the water that falls onto the ground. People who use tanks and cisterns must also be careful . ...