.....they still have problems.
Several years ago two luxury homes were built in the woods behind, and below me. Both are a couple hundred yards away so we still have privacy.
Both homes are in the near-one million dollar category, beautiful. But, I'm sure they have nearly that much again invested in ground preparation. They are near a creek and the land is rock, solid, very solid rock. They had a large track-hoe with a jack hammer working every day for months. That had to cost big-big bucks.
Plus the homes are low on the hill and near the creek. Meaning their sewage systems had to have lifts and pump uphill to the septic field. I know one of the homes has had repeated problems. First, the check valve was installed backwards----twice.
Now, about a week ago they had a restoration company working in one. A large trailer hauled away piles of carpet and furniture, all very expensive stuff, I'm sure. Today they are back with a large pumper truck and more equipment. I can only surmise that the system had to have failed and they got a house full of 'stuff'. I can't imagine how unpleasant it must be to have a situation like that.
Septics and wells are the only things in a home in our rural area that need county or state inspection. This one, IMHO, was flubbed by all involved.
I'll again surmise, that system is going to need more big bucks spent to make it a reliable working system.
BTW, fortunately, 'stuff' runs downhill and I am uphill from them.