We can borrow Dua Fatima's shovel. Then we can make a huge well coming up from the ground, up to the surface of Mars. Nasa discovered areas on mars that were darker in warmer conditions and lighter in colder conditions like water freezing and melting. We will dig in those spots, and then filter them. We will dig into the areas where we think the water is, then we will put large pieces of metal into it and cover the sides of the inside with the metal.
Then, we will wrap a strong rope around a small bucket which will be attached to a small metal pipe with a loop around it, sticking out of the ground. Then, there will also be a rope around a metal bell, so that when all of the water has filled the bucket, the bell will ring, and someone will get the water. But if the bucket falls, then there will be a small ladder that someone can climb onto, to get down.