Sincerely,

Yar

Are there enough water sources available to travel with 3L of water and my filteration system for two?

Yes, there is enough water along the way, unless you drink more than 1L per mile–I sweat a lot, and even I get by with a 1.5L bottle. The places to find flowing water are Hanakapiai Valley (2miles from trailhead), Hanakoa (4 miles from previous), and almost every mile thereafter. Oddly, the 2 “wet” valleys between Hanakapiai and Hanakoa have little surface water, while every little valley on the “dry” part after Hanakoa has a good stream. Of course, weather patterns can change, but I think unless there is an extended drought, Hanakapiai and Hanakoa will always be flowing.

So the longest stretch without water is always 4 miles, and often much less.

I know you say you do have a “filtration system,” but just to be clear for everyone, filtration is technically not sufficient. Leptospirois is a long bacteria, but only 1 micron in diameter, so theoretically it could go through a 1 micron filter (still the smallest on the market I believe). For this reason, I also add purification drops to my water after filtering, I use the brand SweetWater. Perhaps the new UV or ozone filtration systems don’t need this, I haven’t read their specifications yet.

Here’s a hiking secret of mine: try to hike at a pace where you can breathe through your nose–and avoid talking. Breathing through your mouth loses more moisture and can contribute to dehydration. That’s how that old trick of sucking on a stone reduces your water need.