Does Homeowners Insurance Cover Water Damage? Complete Policy Guide
Whether an insurer indemnifies a residential water loss depends on an exacting contractual bifurcation: the physical vector of water intrusion and the temporal velocity of the discharge. Under baseline Insurance Services Office (ISO) Form HO 00 03 (HO-3) contracts, coverage applies exclusively to abrupt, unexpected physical discharges originating from within a closed domestic plumbing, heating, or air-conditioning system—such as a catastrophic copper supply line rupture or a sheared water heater tank seam. Conversely, policies systematically exclude losses caused by long-term moisture permeation, subterranean hydrostatic pressure, municipal sewer or drain surcharges (absent a specialized HO 04 95 rider), and surface overland run-off (which falls strictly under federal NFIP flood jurisdiction).