Common repairs
| Problem | What you notice | Typical cost |
|---|---|---|
| Broken inlet or outlet baffle | Backups, solids in the drain field | $300–$900 |
| Cracked or rotted lid | A soft spot or hole by the tank | $150–$500 |
| Failed lift or effluent pump | Alarm sounding, water not moving | $800–$2,000 |
| Blocked line from the house | Every drain slow at once | $200–$700 |
| Adding risers to buried lids | No problem yet; saves digging later | $300–$800 |
Rough ranges from local quotes. Your contractor confirms after looking.
If your septic alarm is going off
Systems with a pump have a high-water alarm. Press the silence button, cut back on water use, and call. The pump may have failed, or a float switch may be stuck. If you ignore it, the tank can overflow toward the house or the field.
Never go into a septic tank. The gases inside can kill in minutes. Leave inspection and repair to a contractor with the right equipment.
Backups
If the lowest drain in the house is backing up, the tank or the line to it is full or blocked. Most of the time a pump-out and a line clearing fix it the same day. If it comes back within weeks, the problem is usually the drain field.