Some sayed
that the lead that gets trough the bullets of hunters and
 as plummet of fishing rods into the environment is much more than
 that from solder in electric waste... 
 Even then, that lead is not soluble. 
 
About as soluble as the lead in solder, no?  Or does the presence of
the tin make the lead more soluble?
In any case, it's soluble enough to be a problem.  That's why they
don't make water pipes out of lead any longer.  Not much dissolves, but
it doesn't take much.
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