This unsustainable practice decreases long-term water security and availability. Furthermore, and almost most importantly, water takes a lot of energy, time, and money to filter and clean so that it's drinkable. Wasting water or overusing household water means you're wasting the energy-intensive process of filtration.
Explanation: Regolith is formed from the constant bombardment of the lunar surface by space weathering processes, including most prominently meteoroid impacts
