Honestly, the peak coal thing, sure, that could feasibly happen. It wouldn't affect anyone in the slightest (besides maybe coal magnates), but it could happen.
Peak Water will never be an issue as long as the oceans remain on earth. For you to claim desalinization isn't viable is absolutely ridiculous. Countries in the Caribbean and a few in Arabia have been doing it for years. Something like 80% of the world's population lives near the coastline. That is a significant market.
As for the aquifers, I'd be more worried about the desertification of America's farmland, although that's not even an issue with the new GMs, greenhouses, and research into synthetics.
You put far too little faith in science and technology, just like every doomsayer who likes to join the elitist cult of people who know what they know what they know... next thing you know you'll be trying to stir up a thread about Peak Iron...
If these problems are so easily solved, why are so many people drinking substandard (contaminated with arsenic, pathological bacteria, etc.) at the present time? If there are simple solutions, millions living in India and Bangladesh would be very eager to hear them.