Greetings MMO,
Thank you for sharing some of your experiences with dowsing energy levels in this. You'll find that not all store bought water is the same.
I'd check in with my doctor or nutritionist to see what they'd recommend based on my blood tests., etc. then narrow down to the right brand with the rods. But that's me.
Are you checking each one of these in the same sitting or at different times? I will do my tubes of light and bring my focus to the question and tune into the energy. When I get my answer, I trust it and move on.
Sometimes dowsing for yourself can be skewed because of your vested interest, and having someone else can be a helpful interim check until you are able to "step out of the equation" better.
Much Love, Shawn