Who to report a hazard at a business to in Houston if they won’t fix it?

There is a playground at the gym our family uses and some of the steel platforms have the coating pealed back on the edge where the kids climb. Where the coating is peeled back the metal is jagged and rusted. A child cut their stomach open on it today. It was reported to the employees but they said there is no money to fix it right now, they won't close off that portion of the playground, and they said they are not liable per the membership agreement if a child is injured.

In the interest of children not contracting tetanus, is there an entity in the city that could push them to fix this?