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Planning portal

- due to essential maintenance, documents may be unavailable on Wednesday 13 May and Thursday 14 May 2026.

Septic tanks and cesspit emptying

When to empty your private sewage treatment system

Septic tanks

  • should be pumped out once a year
  • alternatively, the sludge and scum layers should be measured annually
  • regular maintenance prevents solids from entering and clogging the soil treatment system

Cesspits

  • usually have no outfall, so they need to be emptied more frequently

Who carries out emptying

Scottish Water empties both septic tanks and cesspits. Costs vary depending on the size and type of system.

Regulatory requirements

The Scottish Environment Protection Agency (SEPA) regulates what can be discharged from septic tanks and cesspits into watercourses.

Your septic tank must be registered with SEPA. For more details, visit the SEPA website.

Need help?

If you have concerns about a septic tank or cesspit, contact Environmental Services.