how much does it cost to empty a holding tank
Average Septic Tank Cleaning Cost. Average septic tank cleaning cost is $200 to $300 for a septic tank as large as 1,000 gallons. Prices can go up to $800 for a large, 2,500 gallon tank. There may be an additional $200 to $400 charge if the contractor has to find the septic tank and locate the opening, depending on the amount of labor involved.