Texas law limits negligence lawsuits to $250,000 per occurrence. It appears that Fort Worth will have to pay every bit of that $1 million.
I saw a picture of the pool empty, with ladders going to the bottom and a couple of guys walking around in the drained pool. It looked like the total depth might have been 8 or 9 feet, but the water line looked to be more like 7 feet or about a foot above the heads of the guys standing in the empty pool.
There seem to have been quite a few people who jumped in and tried to save the victims and none of them drowned, even though they were not able to bring any of the victims to the surface.