Septic System Problem - Reality Check Needed
About two and a half years ago, with 4 feet of snow on the ground, our powder room toilet backed up. The plumber sent a guy with a router machine who routed out the blocked stack from the basement. We were only living here part time and he thought the clog was due to weather and no daily use.
Yesterday, the same thing happened again. Our plumber came, said the line was blocked. We opened up the septic system hatch and he routed out the line from the tank end. Water flowed into the tank etc.
However: the tank was not full of water. It hasn't been pumped in 5+ years. He thinks the tank is cracked or gasket is faulty or roots of a weeping cherry tree the PO had planted might have impinged.
He says the tank may need to be replaced, which means losing the tree and digging up the yard. His son does excavations and tanks. I will asked about licensing and bonding and inspections, etc. We are several acres away from anyone else so there are no neighbor issues.
Before we go there on the tank replacement I'm wondering if there are diagnostics for tanks and, if so, what's the drill? Also, where does this land in the cost ballpark -- in general?
Any guidance would be appreciated.