how much does it cost to move a septic system
Septic System Replacement Cost. The cost of septic system replacement depends on the type of system installed. Here are the average ranges: 1  Gravity fed drainfields of all types: $5,000 to $10,000, or an average of $7,500. 2  Mounds: $10,000 to $50,000, or an average of $30,000.he cost of septic system replacement depends on the type of system installed. Here are the average ranges: 1  Gravity fed drainfields of all types: $5,000 to $10,000, or an average of $7,500.