Berkey System...The most reliable filters use gravity, not electricity, to remove metals, chemicals and other toxins from water. In a comprehensive laboratory study that tested water filters for the removal of heavy metals, the Big Berkey System performed the best!
While it might not look like much, a ceramic water filter can mean the difference between you having icky stuff in your water or drinking clean, pure H2O. Blogger Russ Michaud details how to make your own ceramic water filter and offers several examples of DIY systems. Here's his diagram of a 2-bucket setup. From MOTHER EARTH NEWS magazine.
Jen Mills, "offering", (2005). An installation exploring time and memory. Over the course of 40 days, a room is filled with 40 bowls. Each day a new bowl filled with salt and water is placed next to the one before. Over time, the older bowls become encrusted with salt, the younger bowls just beginning. Slowly salt water filters through the bowls, creating patterns on the floor, covering the entire room.