Inspect and Pump Frequently
The average household septic system should be inspected at least every three years by a septic service professional. Household septic tanks are typically pumped every three to five years. Alternative systems with electrical float switches, pumps, or mechanical components should be inspected more often, generally once a year. A service contract is important since alternative systems have mechanized parts.
Four major factors influence the frequency of septic pumping:
Household size
Total wastewater generated
Volume of solids in wastewater
Septic tank size
.