Water supply

primarily of limestone rocks of high permeability, and is separated into two principal hydro-stratigraphic zones consisting of the Upper Floridan Aquifer (UFA) and the Lower Floridan Aquifer (LFA). The upper Floridan aquifer is the principal source of water supply in most of north and central Florida: “The Upper Floridan aquifer generally consists of the Ocala Limestone and the dolomite and dolomitic limestones of the upper one-third of the Avon Park Formation” (OReilly, et al. 2002). The LFA consists of

Water is one of, if not the most, precious of all natural resources. Without water, life on earth would cease to exist, and as humans, our lives are intricately intertwined with water. Apart from being used for potable purposes, water is also used domestically for washing and cleaning, in agriculture for crop irrigation and in industries as part of the production processes of a variety of materials. In this report, the history of water supply and treatment will be discussed, along with recent technological

It is widely known that water covers almost three-quarters of the Earth's surface. However, it is not widely known that more than 99 percent of Earth's water is unusable by humans and many other living things. Less than one percent of water which supports most of the forms of life we are familiar with. Unfortunately, that one percent of fresh water becomes more polluted every year. The pollutants that fill our waterways each year are largely unknown. Water pollution comes from a number of unique

Analysis and comparisons of several water-supply alternatives for North-west China Introduction: The world’s semi-arid and arid regions are located mainly in North Africa, the Middle East, as well as South Asia. There are also isolated arid areas in Australia, parts of South America and the southern part of North America (Clarke, 1991, p.13). In this report, the problems of arid regions in China will be studied and analysed. The reasons for choosing China as a research target are because the rapid

Los Angeles Water Supply: Past and Future Fresh water composes an incredibly small percentage of the overall water supply in the world; so then why do we take it for granted? We are slowly losing our naturally made rivers, losing ways to import water to dry lands, paying large corporations to supply us with one of life’s essential needs. The idea to supply Los Angeles with water was first discovered by a Spanish man named Gaspar de Portola; he led an expedition to California in 1769. Originally

was made possible only because of two main water sources: surface water, or water that gathers on the ground, such as rivers and streams; and the groundwater, which is pumped out from the ground. The area also ignites interest on producing a small amount of desalinated water, which is still too expensive to be widely applied. Undoubtedly, Groundwater plays a significant role in California water supply. During a normal year, 30% of the state 's water supply comes from groundwater. In times of extreme

more frequent and severe droughts due to climate change has stimulated research into water-saving irrigation strategies aiming at producing more ‘crop per drop’ (Morison et al., 2008). The trend in recent years has been towards conversion of surface irrigation to drip irrigation to improve water use efficiency, plant quality and, crop yield. Drip irrigation systems have increasingly been used to supply irrigation water, fertilizers, and pesticides to a wide range of vegetables, field crops, and fruit

An Issue for California’s Water Supply Now and in the Future: Educating Urban Consumer’s to Reduce Consumptive Usage Michael McCullough California Polytechnic State University San Luis Obispo Introduction Water is essential to sustain life. It is becoming an ever more valuable resource every year as it becomes scarcer. The general problem is that California is in the midst of a severe drought. The specific problem is that the typical urban consumer has little knowledge of how to reduce their

that water will never be used up. There is plenty of water, such as rain, water from the rivers and wells. It seems as if water is always available around us and we never have to worry about water shortage. In fact water is rather limited on the earth. With the rapid increase of population and fast development of industries, water is more needed than before. At the same time, a large amount of water has been polluted and wasted every day. Some big cities in China are facing the problem of water shortage

also taken notice. Joint Monitoring Program for Water Supply and Sanitation, for example is a program spearheaded by the World Health Organization (WHO) and United Nations Children’s Fund (UNICEF). The main function of this is to monitor the progress of the Millennium Development Goal (MDG) on water which is supposed to end this year. Goal Target 7c of the MDG means to halve the number of people without access to sustainable and safe drinking water by 2015. The program started in 2005, and it has