back before I had a filter, I would boil, and use ClO2. Now-a-days, a package of ClO2 is the same price as a Sawyer Mini.
Anyways, when I boiled, I would not dry camp. I would boil and drink as much as possible at breakfast, then pack 1-2 liters. Then at lunch, I would repeat. It took a lot of time.
Another option is to cache water. Look for roads that cross the trail you are on. Then bury buckets of water and mark the location so that only you can find it.
$19 for a Sawyer mini. I have never looked back.
I've taken a vow of poverty. To annoy me, send money.