Cathy, how old is your house? Older homes here had that awful cast iron piping (drains) or clay pipes that are notorious either for rusting out or disintegrating, and when that happens the waste water/stuff backs up instead of going where it should. I'm surprised you had it inspected and they said it was ok if it is doing what yours is doing. We just replaced a whole cast iron pipe drain in a house which meant digging a trench through the house and removing the pipe.
Do you have trees nearby the septic tank or the drainfield? Roots will travel to where there is water and keep things from flowing. Snaking drains will chew up the roots in the way, but I think that's a temporary fix as the roots will regrow. Some drain specialists can come and put a scope camera down a drain and look around and tell you what's wrong with the pipes.
My best guess is it's a problem in your pipes or the drainfield has failed. Pumping out the tank is a temporary fix. Yeast isn't going to fix your problem. I see it advertised but when I asked DH he went
a good working system doesn't need such things. We don't put stuff down a drain we don't have to, like stuff in the kitchen, even if it's small.
Is yours a gravity system? Is it lower than your house so everything flows to it or do you have a pump somewhere to pump it up. We have a pump and if our float switch fails it doesn't pump things into the tank. We've had to change ours twice already.
I sure hope you get some relief with it soon.
Welcome to
Donna!
I've been working on emptying the 2017 stuff out of the files and getting it ready for the 2018 files. I'm about half-way through, don't know why it's taking so long this year.
Kathryn, I'm curious what happened to your house too while you were gone...it must have been something.