In the times of the Second Polish Republic Warsaw was a national power in water polo. The leading players included members of the AZS (University Sports Association) and Legia. Other Warsaw clubs had their teams, too: ŻASS (Jewish University Sports Association), Ascola, WKW (Warsaw Club of Water Sports Enthusiasts), Polonia, Makabi and Rywal.

AZS water polo players included a national hero of Greece and Poland, Jerzy Iwanow-Szajnowicz, whose life was made into a film as Agent No. 1.

Photo of 1937. A match of the AZS Warsaw with Hakoah Bielsko, won by the hosts. Collections of Tadeusz Makowski, in possession of Robert Gawkowski.