Treat wastewater as a boundary and sanitation problem

DECISION GUIDE 26

Make the next action fit the evidence

Use the condition described here to narrow the first safe action, the responsible contact, and the written authorization.

Do not pay for certainty that the observable pattern does not support.

OBSERVE

Preserve the useful clues

Stop all building water use. Record the affected openings, exterior cleanout condition, street or neighboring signs, weather, and the last fixtures used without entering contaminated areas.

Write the time, fixture, room, and use that preceded the change.
Photograph the wider context before taking a detail view.
Keep model labels, bills, prior repair records, and test results together.

CONTAIN

Choose the safe boundary

Keep people and pets away. Do not use the referral line instead of the city when a public manhole or street overflow is involved. Arrange qualified cleanup separately.

Containment should reduce harm without erasing evidence or transferring risk to gas, electricity, wastewater, finishes, or utility equipment.

AUTHORIZE

Put the first scope in writing

Require the initial boundary, access, clearing method, camera conditions, findings, temporary versus permanent status, cleanup limits, and responsibility for restoration.

Ask what is included, excluded, and still unknown.
Set the price or authorization boundary before work expands.
Define the test or record that will show completion.

SANTA ROSA SOURCE

Check the current public guidance

Santa Rosa 2025 Sewer System Management Plan

The plan states the user-maintenance boundary for laterals and related devices.

Before the visit Preserve the pattern and clear only safe access.
At diagnosis Ask what observation or measurement supports the conclusion.
Before repair Verify the legal provider and compare the complete written scope.
At closeout Review tests, remaining limits, permits, cleanup, and documents.