There can be many different reasons for the presence of these ions in the water and as a matter of fact they are usually found naturally in underground sources. The rocks which surround the water body are composed of Mg, Ca, etc and then we have a high amount of SiO2 which happens to be the most abundant compound on earth. So, we can see that the water could contain amounts of these ions and compounds. Besides this our well’s location near the coast can be responsible for some salts in the water which later disassociate in to the above mentioned ions. So, we can see that there are numerous sources of these ions and it is in fact quiet normal for them to exist in this water.
Although the data we recovered gives us a normal and overall healthy view for any water body but at some instances we can see that the data is quiet inconsistent. When we talk about exposure or interaction with seawater we can see that the well named under “Gulf-34” has some inconsistent values for the ions of Na and Cl. This well is located just 5 km from the coast and its depth happens to be 40 m. The well has reported exceptionally higher values of Sodium and Chloride which indicate that the water in this vicinity could have been in exposure to the seawater. This could be because of many reasons but we can the fact points towards seawater contamination.
We can see that the data reveals that the aquifer has been in contact with Nitrogen exposure and this can be seen in the unusually high nitrate values obtained from the analysis. This exposure could be because of a number of factors but as we have seen in the scenario discussed above the main reason could be the extensive use of fertilizers. The wells that are located near the shore have a lower nitrogen value which is because agricultural lands are usually located away from the sea and hence we can see that the nitrogen levels are high in far areas and this is because of agriculture. This is because of once again the fertilizers which have contaminated the upper aquifer and resulted in overall aquifer contamination.