You can buy concentrated alkaline drops at health food stores. These are basically liquid minerals—potassium, calcium, magnesium—that raise pH like a tall ship raising its sails. Just a few drops per glass, and you’re at an 8.5.
Caution: These drops taste like chalk mixed with regret if you add too many. Start with one drop per liter and taste-test like a sommelier for weird water. You’ll find the sweet spot.
Also, don’t drink these drops straight. I did that once. My tongue tried to unionize and file a complaint.
3 Simple Ways to Raise the pH of Water - wikiHow
