The aliens eagerly got to work pulling water to the surface and then testing it with a leaf from one of the women's packs.
"The leaf turns bright red if it comes into contact with any liquid that isn't water. We use them for testing our drinking water every day to make sure that it is still safe to drink. One time, after some of the vines overgrew a piece of grassland inside, the water turned bad for a while, so now we check all the time." She explained.
"It is a good idea, especially up here. You never know what is in the water or what has happened to it. But if the leaf says that it is safe to drink, we will verify with our scanners, and then you can wash everything to take inside and feed your friends." The Team Leader agreed.
The water was actually very pure, and she had already scanned it when she found the well, but there was no harm in double-checking.