نتایج جستجو برای: drinking water standards
تعداد نتایج: 675339 فیلتر نتایج به سال:
Background: Internal corrosion and the formation of scale in water distribution pipes are the most important problems for an urban water distribution system. Physical, chemical, or biological factors can lead to these two processes. Internal corrosion and scale formation can impact health, economy, and aesthetics. This study assessed the physicochemical quality parameters and evaluated the pote...
Background and purpose: Fluoride is one of current anions in water and soil, but its level varies in different water supplies. Most of the body's requirement for fluoride is supplied through drinking water, therefore, water utility authorities and monitoring organizations should closely control the level of fluoride in drinking water. The aim of this study was to measure the level of fluoride i...
Background & aims: All around the world, underground water resources are a major part of supplying drinking water due to high quality, easy access, low cost and no need for complicated treatment. On the other hand, lack of proper management can transfer chemical pollutants through industrial and agricultural effluents. In this study, the chemical quality of rural drinking water supplies in Neys...
Distribution and seasonal variation of sixteen priority polycyclic aromatic hydrocarbons (PAHs) were investigated in the drinking water of Tehran, the capital of Iran. Detected single and total PAHs concentrations were in the range of 2.01-38.96 and 32.45-733.10 ng/L, respectively, which were quite high compared to the values recorded in other areas of the world. The average occurrence of PAHs ...
Introduction: Water quality has directly related to personal and public health. Therefore monitoring of water supplies and theirs sanitary conditions is very important. The aim of this study was to investigate the chemical quality of drinking water in Khoy city (West Azarbaijan province, Iran) during 2008 and 2009. Materials & Methods: This resach was a descriptive study. All data of water qua...
This study highlights the severity of arsenic contamination in the Ganga River basin (GRB), which encompasses significant geographic portions of India, Bangladesh, Nepal, and Tibet. The entire GRB experiences elevated levels of arsenic in the groundwater (up to 4730 µg/L), irrigation water (~1000 µg/L), and in food materials (up to 3947 µg/kg), all exceeding the World Health Organization's stan...
Identifying which factors influence household water management can help policy makers target interventions to improve drinking water quality for communities that may not receive adequate water quality at the tap. We assessed which perceptional and socio-demographic factors are associated with household drinking water management strategies in rural Puerto Rico. Specifically, we examined which fa...
Use of holy springs and holy water is inherent in religious activities. Holy spring water is also used extensively for personal drinking water, although not assessed according to drinking water standards. Holy water in churches and chapels may cause infections via wetting of lips and sprinkling on persons. Our aim was to assess the microbiological and chemical water quality of holy springs and ...
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