نتایج جستجو برای: drinking water quality
تعداد نتایج: 1275719 فیلتر نتایج به سال:
Background and purpose: Heterotrophic plate count (HPC) is commonly used to assess the general microbiological quality of drinking water. HPC must be less than 500 colonies per milliliter in drinking water. The aim of this study was to compare the heterotrophic bacteria of bottled water and drinking water distribution system and their relationship with water quality parameters. Materials and m...
Backgrounds and Objectives:Safe drinking water providing is one of the main purposes in the community. Development and improvement of community is related to the public health. In this study !we studied the bacteriological quality of 116 villages under coverage of the water and wastewater companies in rural areas of Saqqez in.1386Material and Methods:Drinking water of these rural areas have pro...
the aim of this study is to investigate drinking water contamination and to identify potential sources of contamination during the water production, delivery process and in water tanks in the kindergartens of gaza strip governorates. the samples were taken from water tanks in the kindergartens, water tankers and private desalination facilities in the gaza strip and analyzed for chemical and bio...
Introduction and purpose: Assessment of water quality assessment is an appropriate measure an important step for the optimal and efficient use of drinking water resources. This study aimed to investigate of drinking water quality in Torbat Heydariyeh County using IWQIS software in 2018. Methods: In the present study, 234 samples of groundwater resources were taken from different areas of the c...
background: the objective of the study is examining the microbial quality of drinking water in kashan’s villages, and determining the usage of safe water in rural population in terms of microbial quality in the second-half 2007. also the role of kashan rural water and wastewater company (krwwc) in improving drinking water quality in kashan rural areas was investigated. methods: in this descript...
Contents 1. Introduction 2. Drinking water quality standards and their development 2.1. WHO drinking water quality guidelines 2.2. Health related chemicals 2.3. Microbiological aspects 2.4. Acceptability aspects 2.5. Development of national drinking water quality standard 3. Wastewater quality standard 4. Water quality consideration in various water uses 4.1. Agricultural water use and preventi...
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background and purpose: today, by increasing different pollutants, the continuous monitoring of surface waters is essential. dorudzan dam is one of the main sources of surface water in fars province, iran; hence, the current study investigated the quality of dorudzan reservoir for drinking and irrigation consumptions. materials and methods: in this study, various physicochemical parameters [ph...
the purpose of this study was to compare the dez river water quality in the dezful hydrometric station for human drinking water, industry and agriculture. this study by cross-sectional method used data from the period of 39 years. sampling was carried out on the basis of physical and chemical parameters were determined. the results with world health organization standards, charts schuler and ag...
Drinking water quality was investigated at source and corresponding point-of-use in 2 peri-urban areas receiving drinking water either by communal water tanker or by delivery directly from the distribution system to household-based groundtanks with taps. Water quality variables measured were heterotrophic bacteria, total coliforms, E. coli, conductivity, turbidity, pH, and total and residual ch...
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