pH of 7 is neutral, coffee is around 4. Your water should be 6 - 8.5.
Alkaline and Ionized Systems
Sale
Crystal Quest Big Blue Whole House Water Filter, Alkalizing (4-6 GPM | 1-2 people)
From
$490.80
$687.12
Sale
Crystal Quest Acid Neutralizing Whole House Water Filter
From
$1,118.75
$1,566.25
Sale
Crystal Quest Commercial Acid Neutralizing Water Filtration System
From
$1,335.00
$1,869.00