Finely grate ginger and, using a flexible spatula, press solids into a fine-mesh sieve set over a small bowl; discard pulp. You should have about 1 tsp. ginger juice.
Combine ginger juice, lemon juice, lime juice, agave, and Pink Himalayan Salt in a large measuring cup or bowl. Stir in mineral water. Pour over 2 glasses filled with ice.
Electrolytes are minerals that, when dissolved in water, carry electricity and are essential for bodily processes. They control your body's water balance, pH levels, how nutrients enter and leave cells, how waste is removed from cells, and how well your muscles, nerves, and brain function.