Hello Nancy,
I agree with all the posts.
You must consider which one of the posts (or combination of posts) applies most appropriately to the balance between: 1) your physiological necessity and, 2) the level of your insecurity of running out of water for a given period of time (I've been there
). It's imperative to cleanse the mouthpiece, tubing and bladder every day. Abide by the manufacturer's recommended method, which usually involves air-drying. You don't want to get a stomach ache in the Camino.
(By the way, I don't encourage one product over another, nor do I do marketing. The equipment below was purchased with my hard-earned money, used it and worked well for me).
What did I do for hydration on the Camino? Having tested and used almost all of the available hydration methods over the years, both personally and professionally, I choose to carry two very light water bottles on either side of my back-pack. The access is easy as is the everyday cleaning. I refilled them with fresh water and at times with an electrolyte. I drank alternatively from both sides so as to have a balanced backpack. In the
Camino Frances, water and electrolyte drinks are readily available. In other caminos, you must evaluate the time and distance between water sources.
If you consider this option I suggest either a plastic or stainless steel bottle in the
size and weight of your liking. If plastic, get information on a bpa free plastic bottle like for example a Thermos Intak. If stainless steel, there's Kleen Kanteen with the sports cap amongst other choices in stainless steel. I've tried both (although in different sizes) and they get the job well done and live forever. The flexibility and low maintenance that they provide worked well for me.
I hope that this little bit of information, coupled with that of my fellow peregrinos provides you with viable options.
Ultreïa!
CSi