The rural Shijing is eight meters deep, but it is close to the septic tank. Will this affect the water quality?

There used to be a stone well in my uncle's house, next to a pigsty, separated by less than 1 meter, but his well will not be polluted by water quality, and yours may. The reason is this: when our village was not demolished, many villagers in my uncle's house used to draw water, because the well was dug in the middle of a few meters of stones and the water was less than four meters deep. By the well is a pigsty built by my uncle, and there is a half-meter-deep gutter beside the big stone. However, when drawing water, well water will flow into the ditch, even if the tap water is not very smelly. Although it is close to the pigsty, the sewage from the pigsty also flows out through the ditch, but because the ditch is not deep and there are big stones on the side, the water in the well is not smelly, but it smells like mountain spring water. You can see the bottom of the well in summer, and there are miscellaneous stones under it. That well water is a bit wonderful. It is biting ice in summer and smoking in winter. My grandparents grew up drinking the water from that well, and they are all gone 100 years old. My uncle left in his eighties, but that was because he drank. My aunt is still alive in her 90 s, so I think that well must be pollution-free. Then why should I say, why do wells affect water quality? One of the main reasons is that although it is a stone well, yours is not natural, but artificial stone, impurities will definitely penetrate into the well water, and septic tanks are generally deep. The septic tank dug by my family is about three meters. Moreover, septic tanks accumulate for a long time. Although the septic tank will be built with bricks and cement, it will penetrate into the outer layer during long-term soaking. Your well is also artificially repaired, which will definitely have an impact. However, this is all theoretical speculation. I suggest you take some well water to a certain department for testing to see if it has any influence. After all, it's scientific now. You can't blindly conclude that your well water will be polluted by septic tanks just because you haven't seen the function of septic tanks and well water. To sum up, septic tanks and well water are buried deep underground, but there is no odor. However, as far as people's senses are concerned, they will feel uncomfortable first. I suggest you take the well water for testing, and then consult a fairly professional person, which will be better, because it will cost a lot of money to change septic tanks or wells, and I believe professional and scientific data is more appropriate.