We all know that water is a key-point why life is existing on the planet Earth, and without water all human beings, animals, birds, marine animals, as well as, plants and trees would be dead. Our green home planet had been the same as Mars if all water would have disappeared. However, people do not care enough about water pollution and do not understand what damage this process might cause.
Sources of Pollution
Water pollution is described as any possible biological, chemical, as well as, physical issues that cause a negative impact on the quality of water and do a harm on any living creatures that are using or living in that damaged water. Water pollution happens when any toxic substances are entering any bodies of water such as ponds, lakes, rivers, seas, or oceans. When the major bodies of water are polluted, the natural underground water reservoirs are affected also, and it can end up in water people are using in daily activities, including drinking and cooking.
All possible water pollutants are classified and distinguished into seven categories. The first category includes biological pollution that can cause disease, as a result, all harmful viruses, bacteria, protozoa, worms, and parasites belong to this category of water pollution. Usually, they are found in sewage water or untreated bodies of water. The second category involves only those bacteria that need oxygen. When these bacteria evolve in a body of water, they are using oxygen and cause oxygen-demanding wastes, as a result, other animals and fishes that live in damaged water are going to die. The third category includes pollutants such as toxic metals, salts, and acids. These substances are not organic and do not melt in water, so they cause the death of any live creatures that live in water, as well as, they are harmful to human beings and can cause dysfunction of the digestive system.
The fourth category is nutrients such as nitrates and phosphates, and the biggest source of this kind of pollutants is agricultural activities. The nutrients cause excessive growth of algae and other water plants, reduce the level of oxygen in a body of water, can cause death to water animals, and these substances are very harmful to kids of young age. The fifth category includes organic pollutants such as pesticides, oil, products of oil, and plastics. These substances can be deadly harmful to water plants, animals, and human beings as well.
Another group of pollutants is called sediment. This is the loose sand, clay, silt, and other soil particles that settle at the bottom of a body of water. Sediment can come from soil erosion, decomposition of plants or animals. Some sediments are a natural product of biological changes. However, the major part occurs because of urbanistic activities. The most dangerous sediment releases come from construction activities. Sediment entering stormwater affects the quality of drinking water. The last group of water pollutants is radioactive substances. This type of pollution comes from radioactive waste produced by nuclear power plants, nuclear weapons, and nuclear explosions. This kind of pollutants are the most danger to animals and human beings as the radioactive contamination can cause serious skin burns, defects of inner organs, genetic damages, birth defects, cancer, and even death.