
Keep the side sewer and public main separate
Seattle Public Utilities publishes side-sewer troubleshooting guidance. Ask the assessor to identify the relevant private line, access point and evidence before recommending excavation. A camera recording should connect the proposed repair to an identified location; a cleared blockage does not establish every pipe condition.
Protect people and document the pattern
Stop using fixtures that worsen a backup and stay away from contaminated water. Record affected fixtures, prior clearing work and when the issue returned. Do not enter a manhole or attempt utility infrastructure work.
Request useful inspection evidence
Ask whether the proposed inspection will locate the problem and provide footage or a written explanation you can review. Discuss the accessible cleanout and limits of inspection. Roots, damage and a blockage are possible findings to establish, not conclusions to assume from a recurring backup.
Before calling, distinguish one-fixture symptoms from a shared drainage problem and describe what you observed.
Questions to ask about sewer-line inspection & repair
- What findings support this repair rather than a different scope?
- Who will perform the work, and which Washington qualifications cover it?
- What visit charge, parts, testing, permits and restoration exclusions apply?
Does the quote include everything?
Ask about assessment charges, the proposed remedy, parts, testing and work excluded from the scope. Availability and charges depend on the answering business and actual property. Compare the supplied scopes and exclusions before choosing.
Read when clearing and inspection answer different drainage questions before approving additional work.
Official resources
- Seattle Public Utilities: troubleshooting a sewer problem ↗
- Seattle Public Utilities: taking care of your side sewer ↗
- Washington L&I plumber certification and scope ↗
- Washington L&I contractor verification ↗
- EPA WaterSense: finding household leaks ↗
Resources provide general preparation and official contacts. They do not establish provider coverage or endorsement.