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North Seattle plumbing / guide 31

Seattle private side-sewer responsibility before a repair

SPU says a Seattle property owner generally owns the side sewer from the building to the connection with the public main. Inspection evidence is still needed to locate a condition and assign the correct work.

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Observe first. Let the responsible party identify the cause.
Season and setting

Roots, winter inflow, old pipe material, and settlement may appear in general guidance. Only a labeled property inspection can show what is present along a particular route.

Decision path

Gather the side-sewer map or card, affected fixtures, maintenance history, camera file, distance labels, and exact location of each observed feature.

Prepare for the visit

A provider may identify a public-main or connection concern for SPU review. Preserve the provider statement and utility determination as separate evidence.

What to observe now

Five details that make this plumbing question clearer

Keep the notes factual. A visible clue can direct an inspection without proving what is hidden.

01

Available map

Use the public record for planning without treating it as a current condition report.

02

Interior boundary

Identify the last building-drain point included in the provider's inspection.

03

Camera labels

Request direction, distance, access point, and a clear description of each feature.

04

Public question

Retain the SPU reference and its own finding about the main or connection.

05

Repair approval

Confirm permit and inspection steps for the actual method and location.

Responsibility

Keep household, provider, and public decisions separate

Closeout record

Keep enough detail for the next household decision

The repair file should cover ownership boundary, chosen method, bids, access, right-of-way needs, SPU permit, inspection, restoration, video, invoice, and future maintenance.

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Current primary sources

Check the official page before acting

Public procedures and status can change. Use the source that owns the decision.

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