I am not a big fan of carrying my water on the Half Dome hike. I drink about 7 quarts all day and if I had to carry that I would add 2 pounds per quart to my trek. When I first started doing this obsession, I did carry 2 Pepsi 2-liter bottles full of water in a backpack.
What I found was that the water got hot from my back and the ambient air. Plus my back sweated like heck AND my lower back started to hurt. The worst was that even with 4 quarts, you begin to ration it. “Gee, it’s only 10 am and I still have a long way to go. Better just sip it.” Welcome to the edge of dehydration!
You all know that drinking the water from the Merced is playing roulette with the protozoa giardia and cryptosporidium. These tiny guys come from the “droppings” of animals – and humans.
Iodine pills take 30 minutes to work and they are not effective against cryptosporidium.
That said, I suggest using a water filter pump to draw all the water you can guzzle. Filter pumps range from about $80-$130 depending on features.
Unrelated thought worth quoting: “Raindrops, so many raindrops. It feels like raindrops, falling from my eyes-eyes. Falling from my eyes.” – Dee Clark
MrHalfDome™ – Rick Deutsch – www.HikeHalfDome.com