Honestly, I'm not losing sleep over it. I've got bigger fish to fry than calculating my carbon footprint from running. If you're that worried, maybe try running to a water fountain instead of buying bottles?
Yeah, 'Born to Run' is a good one. But if you're looking for actionable advice, you might want to try 'aniels' Running Formula'. It's all about training plans and pace calculations. Not exactly thrilling, but it's got some useful stuff.