What the pattern can mean
Dishwasher leaks may occur at the supply, drain hose, door seal, pump area or adjacent sink connection. Small leaks can remain hidden beneath cabinets.
Why timing matters
Typical trigger: Fill, wash, drain or drying phases.
Each cycle stage pressurizes or moves water through a different path.
Evidence that increases the fit
- Water appears during one repeatable cycle phase
- Cabinet toe-kick or adjacent floor changes
- The sink drain affects the symptom
Evidence that weakens it
- The area wets when the dishwasher is unused
- A refrigerator or sink line is the source
- No cycle phase correlates
Safe first checks
- Observe from a safe dry position during one cycle
- Record the exact phase
- Check adjacent cabinet bases without removing electrical panels
Important boundary
Do not operate an appliance if water is near wiring or the floor is swelling.
Professional handoff: An appliance technician or plumber should inspect concealed connections and damaged flooring.
Primary references for this topic family
These references ground the general building-science or safety context. They do not diagnose a specific house, replace local requirements or certify a repair.
US Environmental Protection Agency · government guidanceMoisture Control Guidance for Building Design, Construction and MaintenanceMoisture sources, transport, design, construction and maintenance controls.Verified 2026-07-20 · review due 2027-01-20Open source ↗US Department of Energy · government research libraryBuilding America Publications and Solution CenterBuilding enclosure, HVAC, windows, indoor air and high-performance housing research.Verified 2026-07-20 · review due 2027-01-20Open source ↗
Observe→Compare triggers→Repair source→Verify outcome
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