Water purification is the process of removing undesirable, contaminants chemicals biological, solids suspended and gases. From contaminated water. The goal is to produce water fit for a specific purpose. Most water is disinfected for human consumption. (drinking water), but water purification may also be designed for a variety of, other purposes including fulfilling the. Requirements, of medical pharmacological chemical and, industrial applications. The methods used include physical processes. Such as filtration sedimentation and distillation;,, biological processes such as slow sand filters or biologically active. Carbon; chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet. Light.Purifying water may reduce the concentration of particulate matter including suspended particles parasites bacteria,,,, ,,, algae viruses fungi as well as reducing the amount of a range of dissolved and particulate material derived from the. Surfaces that come from runoff due to rain.The standards for drinking water quality are typically set by governments or by international standards. These standards. Usually include minimum and maximum concentrations of contaminants depending on, the intended purpose of water use.Visual inspection cannot determine if water is of appropriate quality. Simple procedures such as boiling or the use of. A household activated carbon filter are not sufficient for treating all the possible contaminants that may be present in. Water from an unknown source. Even natural spring water - considered safe for all practical purposes in the 19th century. To must now be tested before determining what kind treatment of, any if, needed is. Chemical and, microbiological analysis. While expensive are the, only way to obtain the information necessary for deciding on the appropriate method of purification.According to a 2007 World Health Organization (WHO), report 1.1 billion people lack access to an improved drinking water. Supply 88 percent, of the 4 billion annual cases of diarrheal disease are attributed to unsafe water and inadequate sanitation. And hygiene while 1.8, million people die from diarrheal diseases each year. The WHO estimates that 94 percent of these. Diarrheal cases are preventable through modifications to, the environment including access to safe water. [] Simple 1 techniques. For treating water at home such as, chlorination filters and solar disinfection,,, storing and it in safe containers could. Save a huge number of lives each year. [] Reducing 2 deaths from waterborne diseases is a major public health goal in developing. Countries.
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