According to the EPA, how often should you pump a standard septic tank?
Answer Every 3-5 years
How often you pump will depend on how much use your system gets, though the average household septic system should be inspected at least every three years by a septic service professional and household septic tanks are typically pumped every three to five years.
Asked by Elizabeth T · Last updated 5 years ago · 1.4M views · SOURCE
