This is something that really worries me.
Our house has 2 septic tanks. One is solely for the kitchen and laundry room and the other is for 4 bathrooms but there are only 2 of us in the house.
Should I just pray and hope that everything will be continue to be OK or should I take pre-emptive action and go digging for it before something really bad happens.
ETF, is there a way under your house to change what drains to which tank?
If there is, and assuming both tanks and drainage fields could temporarily handle all the waste for the entire house, I would do some plumbing now so that if one tank malfunctions, you could switch some valves and divert everything to the good tank.
By doing the plumbing now, you will continue to have a working sewage system even though one tank is out of commission.
Most of us only have one septic system, so when something happens to the tank or drain field, nothing in the house that generates waste can be used, which in many cases, means we have to live somewhere else while the problem is resolved.
To me, that is a major inconvenience. If I were fortunate enough to have two septic systems, in an emergency, I would want to be able to divert everything to one of the tanks.
Bob