You bought your dream house on the ocean coast, and you love everything about it except the salty taste of your water. Houses that draw water from coastal aquifers have the unique problem of keeping saltwater out. It's just as easy for saltwater from the ocean to infiltrate into the aquifer as it is for rainwater to percolate downward from the surface. Why do you think your water tastes salty? Consider the factors that usually keep saltwater out of freshwater aquifers. (Hint: How does the density of seawater compare to that of freshwater?) Also, think about the natural conditions that could cause saltwater incursion--the movement of saltwater. What human activities could cause saltwater incursion into a coastal aquifer? Record your answers on a separate sheet of paper.

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High levels of sodium could result from any of the following Local salt deposits eroding into your groundwater Naturally high salinity in your aquifer ... View the full answer