When you purchased your property you were required to purchase title insurance, this sounds as if your septic system is on your neighbor's property, which should have been disclosed to you prior to purchase. The best way to proceed is get the advice of a attorney specializing in land title work. Best of Luck I had this problem before.
But what you do is get Lawyer and survey the property and have them find all information and background on the house and land. However, if you have a two house connection with one septic sewer, the Lawyer will find out the law regarding those. If a person who sold you that house still has the house next door to you and still owns it, the lawyer can ask them get their own new Septic system.
I hope this help.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.