I have had this problem too - the low PH from the distilled water
when I started using Miracle-Mineral-Supplement I now add one drop of unactivated Miracle-Mineral-Supplement in the water bottle (about 1.5 l). This ups the PH to above 7 which is healthier and I am guess stops my body from having to work as hard to keep the PH right.
only problem I have found is if I drink too much of this water in succession it gives me a very mild headache. I'm not sure if this is herx or a direct reaction from the Miracle-Mineral-Supplement . Would be curious on peoples thoughts on this.