Eassy on contamination of drinking water
Answers
Explanation:
Ground water is always under threat and attack because of the escalation of cultivation, urbanization and industrialization. Over one third of Canadians use ground water as drinking water.
Ground water is water that is located and stored under ground's surface. It is used in many different ways; for example, agriculture, drinking and industrial processes.
Water contamination is any changes to water's biological, physical or chemical properties that will make the water harmful, and unfit for drinking or using.
If the contaminated water is drank by humans it will cause damaging and dangerous health effects.
major water contaminants are
Disease causing agents: virus and bacteria
Oxygen-demanding wastes: Fecal matter that causes bacteria to decompose them and leads in the reaction of oxygen levels in the water (due to need of oxygen for decomposition)
Inorganic water soluble compounds: toxic metals, acids, and salts
Suspended residues: Oil
Radioactive water soluble compounds: Urea, Uranium
water contamination is usually the result of human activities; they can be grouped in to two categories;
1. Point source indicates that the pollution is originated from a direct place. For example; factories and power plant, pipes and ditches that all discharge their wastes directly in to lakes or rivers are considered point source.
When factories dump their contaminated waste water in to the lake the water becomes polluted with the substances and chemicals dissolved in that waste water.
Some other point source contamination are ; septic tanks, landfills, uncontrolled hazardous wastes, oil leaks, organic compounds, metallic ions, acids and bases.
Answer:
Contamination of Drinking Water
The Safe Drinking Water Act defines the term "contaminant" as meaning any physical, chemical, biological, or radiological substance or matter in water. Therefore, the law defines "contaminant" very broadly as being anything other than water molecules. Drinking water may reasonably be expected to contain at least small amounts of some contaminants. Some drinking water contaminants may be harmful if consumed at certain levels in drinking water while others may be harmless. The presence of contaminants does not necessarily indicate that the water poses a health risk.
Only a small number of the universe of contaminants as defined above are listed on the Contaminant Candidate List (CCL). The CCL serves as the first level of evaluation for unregulated drinking water contaminants that may need further investigation of potential health effects and the levels at which they are found in drinking water.
The following are general categories of drinking water contaminants and examples of each:
- Physical contaminants primarily impact the physical appearance or other physical properties of water. Examples of physical contaminants are sediment or organic material suspended in the water of lakes, rivers and streams from soil erosion.
- Chemical contaminants are elements or compounds. These contaminants may be naturally occurring or man-made. Examples of chemical contaminants include nitrogen, bleach, salts, pesticides, metals, toxins produced by bacteria, and human or animal drugs.
- Biological contaminants are organisms in water. They are also referred to as microbes or microbiological contaminants. Examples of biological or microbial contaminants include bacteria, viruses, protozoan, and parasites.
- Radiological contaminants are chemical elements with an unbalanced number of protons and neutrons resulting in unstable atoms that can emit ionizing radiation. Examples of radiological contaminants include cesium, plutonium and uranium.
So, we should save water for our existence.
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