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Coverage usually turns on the cause
Many homeowners policies distinguish sudden, accidental water events from gradual leaks, maintenance problems, sewer backups, and water entering from outside. A burst supply line and groundwater entering during a storm may leave similar damage but be treated differently by a policy.
Standard homeowners insurance generally does not include flood coverage. Separate flood insurance may apply to qualifying outside-water events. Endorsements can also change protection for sump-pump or sewer-backup losses. Read the declarations, exclusions, and endorsements, then ask the carrier to explain the decision in writing.
