Great thread! I have a question on leach fields and traffic. I just bought a house that is ~7 years old so the septic system and leach field are pretty new. The whole system was set up with 2 houses in mind, only the small one was built and I have no intention of building the bigger one later. I was told and the plans and permits say that 2 tanks were installed along with a leach field designed to accommodate both houses full of people. A 100% reserve leach field was also install, and that is 100% assuming that there are 2 houses connected to the system. From the plans I know that the pipes in the leach field are a minimum of 4 feet deep with gravel completely surrounding them and then soil on top of that. With all of this in mind, how much traffic, people and horses only, would be ok for the leach field. The way the property is set up, hilly and well treed, it is kind of hard to completely avoid the leach field as it is huge. Thanks for the info and ideas!
Oh, I should add that currently there are only 2 people in the house and not likely to be more.