One factor would be the amount of rainfall in the area. If not a lot of water would rain in a specific area than the ground water amount would be very low, and if there were a lot of rain in the area the water amount would be high. Another factor could be the amount of plants in the area. If there were little plants in the area, the plants would suck up the water but not very much of it. But if it was an area with a lot of plants, the plants would suck up a big amount of water.
fertelizer run off from farms
The salt dissolves which causes it to evaporate then it melts down and it becomes in the ground, which is in the groundwater.
filter it through a charcoal filter / commercially available water filter, then boil it for 30 mins to kill any harmful bacteria - this should do it, add iodine for further disinfecting if in doubt but this will taste awful,
Ground off and runoff are both precipitation and fresh water. Since they are fresh water, people use groundwater and runoff for households and drinking waters sometimes.
Groundwater is stored in an aquifer. It's basically a big pool of water underground. This is where most wells go down to.
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A watershed has the greatest effect on the quality of ground water. If the watershed is contaminated, the nearest water source will also be contaminated.
R. A. Engberg has written: 'Groundwater quality atlas of Nebraska' -- subject(s): Groundwater, Maps, Water quality
irrigation
M. J. M. Vissers has written: 'Patterns of groundwater quality' -- subject(s): Mathematical models, Aquifers, Groundwater, Environmental geochemistry, Quality, Groundwater flow
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W. Jesse Schwalbaum has written: 'Understanding groundwater' -- subject(s): Groundwater, Quality
Limestone
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aquifer
R. M Spechler has written: 'Detection and quality of previously undetermined Floridan aquifer system discharge to the St. Johns River, Jacksonville, to Green Cove Springs, northeastern Florida' -- subject(s): Water quality, Quality, Groundwater, Groundwater flow
Kenneth W. Neely has written: 'Nitrate in Idaho's ground water' -- subject(s): Environmental aspects of Nitrates, Groundwater, Nitrates, Pollution 'Ground water quality characterization and initial trend analysis for the Treasure Valley shallow and deep hydrogeologic subareas' -- subject(s): Groundwater, Quality 'Nitrate overview for the statewide ambient ground water quality monitoring program, 1990-2003' -- subject(s): Groundwater, Quality
It depends on how much pesticide you are spraying of course. If you are spraying an over exceeded amount then, yes it can reduce the groundwater quality.Hope this helped!*~*