There are four main reasons why septic systems fail. Some are inexpensive repairs that can be made by the homeowner in an hour or so, but others require more intensive diagnosing and are far more costly to repair. They are highlighted below.
1. Leaking Plumbing in the house
The first and most frequent reasons septic systems fail is because of leaking plumbing in the home! Go through your home and see if you can find any leaking faucets or toilets. Leaking Toilets are the most frequent cause of septic overloading. If you have a leaking toilet, Immediately have it repaired, because by leaving it running, you overload your system.