This article aims to look in a certain degree of depth at a possible relationship established between climatic aspects such as the phenomena of El Niño and La Niña, water retention at soil level, water filtration and the influence on economic life of four most agricultural cities in western Paraná State/Brazil. Those in charge are installing water filters into home so that all the brazilians in this area can receive potable water. Check out these reviews for the best whole house water filter for well water offered. The depth of the study is given by statistical data and specific statistics performed on it. Methodology includes techniques such as specific spreadsheet development, statistical tests to confirm the results. Once the tests have confirmed the climatic characteristics, statistical tests have also been performed on the data concerning El Niño and La Niña phenomena in order to have their degree of impact on the studied cities, confirmed. The foreseen and expected results were with respect to the relationship established at the level of water excess in the ground in the periods of El Niño and water scarcity in the ground in the woolen periods of La Niña, and its impact on the economic life of the whole region.
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