A septic tank typically lasts 20–40 years, but there are warning signs that it may need replacement:
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Frequent sewage backups
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Standing water or soggy areas near the drain field
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Strong sewage odors inside or outside your home
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Slow drains throughout the house
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Visible cracks or leaks in the tank
If these issues keep returning even after repairs, it may be time for a new septic tank.