subsidies legal?

A resume was requested and received. While the pool is not meant to be a big money maker, it is also NOT intended to be a big money loser either. Break even would be HUGE step forward, and the closer we get to that the better off we will be, as taxpayers. Allowing outside private teams made up of 95% nonresidents to use our pool at 15% of the going market rate is defrauding the taxpayers of their rightful revenues and a subsidy to the private swim team. Why are we the only ones in town that subsidize private teams? Isnt there something in the charter that forbids that practice?