Panel for composing a floor covering or wall covering, panel system, and method

A panel for composing a floor covering or wall covering, comprising:

• a first edge that comprises a plurality of first coupling profiles, and
• a second edge, located opposed to the first edge, that comprises a plurality of second coupling profiles, wherein each second coupling profile is configured to engage interlockingly with at least one first coupling profile of an adjacent panel, both in horizontal direction and in vertical direction,
• wherein said first edge and/or said second edge comprises at least one drainage segment that is free of coupling profiles to facilitate flow-through of water in between the first edge of said panel and a facing second edge of the adjacent panel, in coupled condition of said panels,
• wherein the at least one first coupling profile comprises:
• a sideward tongue extending in a direction substantially parallel to a plane defined by the panel;
• and
• wherein at least one second coupling profile comprises:
• a groove configured for accommodating at least a part of the sideward tongue of the at least one first coupling profile of the adjacent panel, said groove being defined by an upper lip and a lower lip, wherein said lower lip extends beyond said upper lip, and wherein an upper surface of said lower lip comprises at least one upward drainage groove.