Checked what the Guide said about tapping:
Tapping
Tapping is the sorcerous conversion of a local manifestation of a Rune into raw magical energy, which then can be used by the sorcerer to power other spells. For example, a sorcerer learned in the Stasis Rune, might tap the Stasis out of a rock, reducing it to dust, or another might tap the Life out of a tree, killing the orchard to get magical power. Most Malkioni, except the Brithini, Vadeli, and Waertagi, consider Tapping to be immoral and evil. However, the principle is inherent in Malkioni philosophy and is easily derived from the logical techniques the Malkioni use to summon, command, or combine Runes.
Sample School of Sorcery: Debaldan School
The Debaldan School of Sorcery studies the Water Rune. Its spells include Summon Water (summon water elemental); Summon Progenitor of Water (uses present water elementals to summon an identified “ancestral water”); and Combine Water with [Power Rune]. Although Tapping is considered immoral and evil by most Malkioni, the Debaldan School does teach Tap Water (the spell is easily derived from the logical techniques used by the Malkioni in any case).
So I can't see an honourable Aeolian or Lhankor Mhy wizard tapping anything.