Many people are confined to their homes at this time and there is far more water being used than normal from increased hand-washing, laundry, and cleaning in addition to cooking and bathing. In those areas prone to water shortages this could become a problem. Sufficient quantities of water are essential as well as the fact that having a clean water source is needed all around the world. Would a request to “cleanse and replenish all water sources and aquifers” be a beneficial addition to the Lightworker Healing Protocol?

This would be beneficial and a worthy addition to be requesting on a routine basis because, as you rightly point out, there are water shortages all around the world and the problem is growing more acute. While this is encompassed under the broad heading of "The Healing of Gaia," those things that are a particular concern for humans are best served by stating them explicitly because this will elevate them in order of priority.