If you plan to install a sink on your kitchen island you should plan space for a garbage disposal and dishwasher too.
The government, in short, has no concrete garbage disposal policy.
A double bowl is fairly common, but single bowls are still available, and some sinks even come with a smaller third bowl to be used for the garbage disposal or to provide extra space in a busy kitchen.
When they're past their prime, I use them in the refrigerator or ground up in the garbage disposal to freshen the kitchen.
He dumped the rest in the garbage disposal and turned it on, returning a few minutes later with the other bottles.