This water-summoning array will fill a container, usually a bowl or bucket, placed in the central placer of the array with pure, clean water. A remarkable feat, to my human eyes, but one the scholars of Basore don’t blink an eye at.
Importantly, this array, like all arrays, uses ambient magic around it to perform its magic, and so this array works best in water-magic-rich environments. Using the array too often can deplete this elemental aspect in the surrounding environment, and so it is used sparingly, where river-water, or such natural sources, are not sufficient. There is a variant on this array which purifies existing water, separating it from all dirt, salt, and other contaminants. This variant seems more commonly used, though it is more complicated and expensive to set up.
~ C. A. Doran’s “A Collection of Spells”