Typical cost to pump a septic tank
$290 – $560
The average is about $420. Bigger tanks, hard access and emergency visits cost more.
Cost and schedule by tank size
| Tank size | Typical cost | How often to pump |
|---|---|---|
| 750 gallons | $175 – $300 | Every 2 – 3 years |
| 1,000 gallons | $225 – $400 | Every 3 – 5 years for a family of four |
| 1,250 gallons | $275 – $500 | — |
| 1,500 gallons | $345 – $600 | Every 4 – 5 years |
| 1,750 gallons | $400 – $700 | — |
Heavy garbage disposal use or a lot of guests can mean pumping every year. Your tank size is usually on the system permit from your county health department.
Signs the tank needs pumping now
- Slow drains or gurgling pipes throughout the house
- Sewage smell in the yard or near the tank
- Wet spots, or unusually green grass over the drain field
- Toilets or drains backing up, especially on the lowest floor
If sewage is backing up into the house, stop using water, keep people and pets away from it, and call for service. Sewage is a health hazard, and anything it soaks needs professional cleanup.
Extra charges to ask about
| Item | Typical cost |
|---|---|
| Buried lids, landscaping or frozen ground | $50 – $200 |
| Thick, hardened sludge | $100 – $300 |
| Septic inspection | $250 – $1,180 |
| Camera inspection | $250 – $500 |
| Routine filter cleaning | $100 – $200 |
Emergency or weekend service typically runs 50% to 100% above standard rates.
Sources
- This Old House, How Much Does It Cost to Pump a Septic Tank?, updated May 2026