How often should my septic tank be pumped?
Officially, the rule is: whenever the top of the sludge or solids layer is within 12 inches or less of the bottom of the outlet tee, or the top of the scum layer is within two inches of the top of the outlet tee, or the bottom of the scum layer is within two inches of the bottom of the outlet tee. Typically, this translates to every 2-3 years, depending upon use of the system.


The Massachusetts Department of Environmental Protection recommends that pumping be performed annually if a garbage grinder is present.

Show All Answers

1. Do Title 5 inspectors have to be licensed by the Town of Cohasset?
2. How do I locate my septic system?
3. How long is my Title 5 inspection report valid?
4. How often should my septic system be inspected?
5. How often should my septic tank be pumped?
6. Where can I obtain a copy of my most recent Title 5 inspection report?