What's in a Name?

I can't quite decide on the title for my coming book.
I thought I had settled on Depth Charge, but now I'm not so sure ...
The plot revolves around local government corruption - specifically round closure of a swimming pool.
But the main theme of this one is families. The real flesh and blood kind as opposed to the alternative 'family' of the Nirvana community ...
I'd like somehow to combine the two in the title. The obvious choice would be Thicker than Water.
Unfortunately this has already been used.
Several times ...
Hmmm. Any suggestions?