Skelly and I love to quench our thirst. Instead of reaching for filtered water, we drink one 750mg bottle of Gerolsteiner Mineral Water. Not only for the bioavailability of calcium and magnesium but because mineral water offsets a highly-acidic Western diet characterized by high grains and animal products. Drinking 1,500-2,000 mL of mineral water rich in bicarbonate (>1.8 g/L) can help reduce the net dietary acid load. 
Personally, I am a mostly grain-free animal protein eater. Animal protein keeps me grounded. Otherwise, I float away and my brain does not function in a sharp way. Not everyone eats this way as we are all individuals with different dietary needs. Vegetarians typically eat more grains which are more acidic.