Can I create a solar still using a tarp?

Gathering Materials

To create a solar still using a tarp, you will need a lightweight tarp or plastic sheet, a large rock or container, and a container to collect the water. The tarp should be at least 7 feet by 7 feet in size, and the rock or container should be large enough to hold at least 1-2 gallons of water.

Building the Still

Dig a shallow hole in the center of the tarp, about 6-8 inches deep. Place the rock or container in the hole, and add a layer of small rocks or gravel to the top. Next, place a layer of sand or small rocks around the hole, and then add a few handfuls of charcoal or small twigs to the center of the tarp. Carefully pour a small amount of water onto the charcoal or twigs, making sure not to spill any water into the hole.

Collecting Water

As the sun heats the water, it will evaporate and rise up through the tarp, condensing on the underside of the plastic. Place a clear plastic bag or a container under the edge of the tarp, and weigh it down with a small rock. As the water droplets collect on the underside of the tarp, they will drip down into the bag or container, providing you with clean drinking water. It may take several hours for the still to produce a significant amount of water, but with the right materials and a clear, sunny day, you can collect up to 2-3 gallons of water using this method.