HerHusband wrote on Tue, 03 May 2016 14:55:30 +0000:

We are required to have our septic system inspected every three years,
but I haven't had to pump my septic tank since 1999. Even then it wasn't
really needed, they just pumped out of routine when the inspection
program was started.

I was wondering about that because my septic system is about 100 feet or
so away and down a hill so I guess it's 20 feet below the house.

I don't even know where the cleanouts are. I haven't touched it since I
moved in 10 years ago, and, well, who knows how long it was in use before
that.

So, how do they "inspect" it anyway?
I presume I have to find the cleanout and then open it, and then what?

Do you just look?