The New England Patriots did not have enough bottled water to keep up with the demand of fans during Sunday’s game against the Houston Texans, but that did not stop the team from continuing to turn a profit on H2O.

Temperatures in Foxboro reached a high of 86 degrees, which is extremely warm for a late-September game. The Boston Globe reports that the Patriots tried to prepare for the heat by doubling their supply of bottled water , but the concession stands at Gillette Stadium still ran out. So how did fans stay hydrated? By shelling out in the range of $4.50 to $5 for a cup of tap water.

Some outraged fans who were being charged for tap water took to Twitter during the game: