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World Health Organization Publication : Year 1994 ; Issue 9280631497, (Uk): Protection and Improvement of Water Quality

By World Health Organization

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Book Id: WPLBN0000158200
Format Type: PDF eBook
File Size: 1.5 MB
Reproduction Date: 2005
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Title: World Health Organization Publication : Year 1994 ; Issue 9280631497, (Uk): Protection and Improvement of Water Quality  
Author: World Health Organization
Volume:
Language: English
Subject: Health., Public health, Wellness programs
Collections: Medical Library Collection, World Health Collection
Historic
Publication Date:
Publisher: World Health Organization

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Organization, W. H. (n.d.). World Health Organization Publication : Year 1994 ; Issue 9280631497, (Uk). Retrieved from http://worldpubliclibrary.org/


Description
Medical Reference Publication

Excerpt
The emphasis in this section is on protecting and improving the microbiological quality of drinhng-water. It is a basic ~ r i n c i ~ lleo,n g established as a result of the lessons learned from serious outbreaks of waterborne disease, that a single barrier to the spread of pathogenic organisms is not sufficient to ensure the purity of drinking-water ( I , 2). Purity is not the only requirement, however; the drinkingwater supply must also be capable of meeting the anticipated demand. Inadequate supply, together with geographical factors, often means that raw water of poor microbiological quality and possibly containing significant amounts of wastewater has to be used. A second principle is that to ensure that the drinkingwater delivered to the consumer is free from ath hog ens, the level of treatment should be related to the degree of pollution expected in the source water. In the case of contaminated water sources, several treatment processes, designed primarily for such water will be necessary. Together, these processes will progressively remove pathogens and other contaminants from raw water and consistently produce a safe and wholesome supply of drinking-water. Ideally, safety should be achieved before the final treatment step, so that the failure of any one process will not result in waterborne disease, i.e. the system is fail-safe. The protection of the source from pollution and the provision of adequate and properly operated treatment processes constitute the essential barriers to the transmission of disease on which the supply of wholesome water depends (1, 2)

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