Palatine positioned itself well in boys water tournament play it was hosting on Saturday before encountering stiff resistance in its final two games.
Following an 8-7 victory over New Trier on Friday and a 19-7 win against McHenry on Saturday morning, the Pirates dropped a 13-9 decision to Loyola and a 17-8 contest against St. Ignatius.
Ignatius topped Loyola for a first-place finish, while Palatine finished third in the team standings.
Palatine's Omar El Hoffi had 6 goals, Krystian Kalev had 4 and Wally Kleinfeldt 3 in the victory over McHenry.
Against Loyola, El Hoffi had 5 goals and Kalev had 4.
In the game that decided the championship, Ignatius edged Loyola 9-8 as John Reyes came up with 4 goals and Shane Hughes and Jesus Juarez had 2 each.
St. Ignatius finished fourth in the state last season, while both Loyola and Palatine were eliminated after narrow losses in sectional championship games.