North Seattle plumbing / guide 23
Water in a basement or crawlspace may involve plumbing, groundwater, exterior drainage, a side sewer, an appliance, or a path from above. The lowest puddle is not necessarily the source.
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Rain timing and cold weather belong in the timeline, not in the diagnosis. Compare them with fixture use, meter evidence, drain behavior, and visible entry points.
Do not enter standing water, a confined crawlspace, an unstable area, or a space with electrical equipment, wastewater, fuel, pests, or uncertain air quality.
From a safe edge, record depth or boundary, color without a toxicity claim, odor without a health diagnosis, direction, active flow, and nearby systems.
What to observe now
Keep the notes factual. A visible clue can direct an inspection without proving what is hidden.
Stop at the first electrical, structural, contaminated, confined-space, or footing hazard.
Photograph a stable reference and the farthest visible edge without entering.
Add rain and freezing times alongside household water use.
List heater, laundry, drain, service line, sump, and exterior entry possibilities as questions.
Mark whether the boundary grows, recedes, or remains after affected use stops.
Responsibility
Closeout record
Separate plumbing, drainage, sewer, electrical, drying, structural, cleanup, and finish findings. A single provider may not own every layer.
Current primary sources
Public procedures and status can change. Use the source that owns the decision.