It has been suggested that it is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily. Pollution has many other sources and costs. In today's world, sewage water pollution is one of the major problems faced by most cities. If a water source becomes contaminated due to pollution, it can lead to health issues in humans, such as cancer or cardiovascular conditions. This has increased water treatment costs by almost $4.00 per 1,000 gallons, according to the EPA "Primary treatment" removes about 60 percent of suspended solids from wastewater. Point source pollution refers to contaminants that enter a waterway via a single, identifiable source, such as a waste water treatment pipe or a factory chimney.Non-point source pollution is when the contamination is coming from many scattered locations. The processes in a water treatment plant are shown in the illustration. Inadequate sewage collection and treatment are sources of water pollution. The most deadly form of water pollution, pathogenic microorganisms that cause waterborne diseases, kills almost 2 million people in underdeveloped countries every year. This treatment also involves aerating (stirring up) the wastewater, to put oxygen back in. Poor drinking water treatment and unfit water can always cause an outbreak of infectious diseases such as cholera etc. First, pollution increases water treatment prices. The external cost of pollution caused by automobiles has been estimated well over $50 billion a year, with some estimates as high as $234 billion. Secondary treatment removes more than 90 percent of suspended solids. Additionally, avoid using pesticides and herbicides in order to prevent groundwater contamination. This is due to the additional energy costs and chemicals to filter and clean the water. Humans are affected by pollution and can contract diseases such as hepatitis through faecal matter in water sources. Sewage Water Pollution: A Deadly Threat to Biodiversity. Water is an essential resource for all life on Earth. In many developed cities, waste or sewage treatment is very efficient and designed to minimize pollution of water bodies. Surface Water Pollution Causes . Water pollution is controlled by treatment of wastewater. 7.4 Water Treatment Resolution of the global water pollution crisis requires multiple approaches to improve the quality of our fresh water and move towards sustainability. Water Pollution Water pollution is any chemical, biological, or physical change in water quality that has a harmful effect on living organism or makes water unsuitable for desired uses. Dilution. Related Topics: Examples of non-point source pollution … Bodies of water can become polluted in a number of ways. Water pollution and treatment PPT 1. Source-water protection is the first step in water treatment, with the natural and engineered processes following. (The next page explains that process) There are also lots of organizations and groups that help educate people about the dangers of water pollution. The methods used for the treatment of wastewater depend upon the characteristics of the particular wastewater ( sewage treatment), contaminants present and final mode of disposal. Economically, it makes good sense to find remedies for environmental pollution. Increased Water Treatment Costs . The ecosystem can be critically affected, modified and destructured because of water pollution. Prior to industrialization, the pollution of rivers and streams was not as significant a problem. To reduce water pollution, use natural cleaners like vinegar and baking soda in place of toxic chemicals like bleach and ammonia. As solid material decays, it uses up oxygen, which is needed by the plants and animals living in the water. 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