I wasn't really thinking about lead when I posted. I thinking more about bacteria, scale and other deposits.
But now that you bring it up:
- Depending on when your house was made, there very well may be lead in the solder joints of your pipes.
- The amount of lead that could be present in a hose would have to be pretty small since it's not actually made out of lead.
- The amount of that lead that could leach into the water in the hose is orders of magnitude smaller.
- The amount of lead in the water flowing through said hose after the initial flush is even more orders of magnitude smaller.
Given that, you would have to consume enough home brew to make you liver jump out of your throat long before plumbism could set in.
So no, I don't worry about lead in my garden hose.