Maintenance Guides / Plumbing & Water

Clean septic effluent filter

Difficulty: moderateTime: 45 minsEst. Cost: $50 - $200

Why it matters

Modern septic tanks have outlet filters to trap solids. If clogged, the filter blocks effluent flow even if the tank isn't full, causing backups.

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How to do it

  • 1

    Locate the septic tank access port (usually in yard).

  • 2

    Remove the cap and locate the outlet filter cartridge.

  • 3

    Carefully lift the filter out of the tank.

  • 4

    Rinse the filter with a hose to remove captured solids.

  • 5

    Reinstall the clean filter in the outlet tee.

  • 6

    Replace the access port cap and cover.