Sure sounds like all the signs of a failing leach field, partly plug up line to it or a messed up distribution box.
How did they "inspect" it?
Unless they dig up the D box and removed the lid or ran a camera down the lines all they did was look for standing water on top of the ground.
It's called a clean out, not a wash out, and there never should be standing water in it.
I believe I asked you this question before, where you there when they pumped out the tank? A sure sign of a fail leach field is as there pumping it out water comes rushing out of the over flow back into the tank from the leach field.
It was common years ago for them to use what's called Orangeberg or even terracota clay tiles for the leach fields, both are subject to damage and roots could just grow right into them.
How did they "inspect" it?
Unless they dig up the D box and removed the lid or ran a camera down the lines all they did was look for standing water on top of the ground.
It's called a clean out, not a wash out, and there never should be standing water in it.
I believe I asked you this question before, where you there when they pumped out the tank? A sure sign of a fail leach field is as there pumping it out water comes rushing out of the over flow back into the tank from the leach field.
It was common years ago for them to use what's called Orangeberg or even terracota clay tiles for the leach fields, both are subject to damage and roots could just grow right into them.