Can you build a solar still with found materials in the wild?

Gathering Materials

To build a solar still, you will need a few basic materials found in the wild. Look for a shallow hole or depression in the ground, a container or rock to collect the water, and a clear plastic bag or tarp. If necessary, use a knife or sharp rock to dig a deeper hole or cut the plastic material. Aim for a hole that is about 1-2 feet deep and 1-2 feet wide.

Building the Still

Place the container or rock in the center of the hole, making sure it’s low enough to be covered by the plastic material. Weigh down the plastic bag or tarp with rocks to create a dome-like shape, ensuring it’s tight and waterproof. Place a small rock or stick in the center of the plastic, allowing the condensation to drip into the container. Make sure the plastic material is clear and free of creases to maximize the amount of sunlight it captures.

Using the Still

Collect any debris or leaves around the area and discard them to prevent contamination. Place a small amount of water in the center of the hole, about 1-2 cups. Weigh down the edges of the plastic material to prevent airflow. As the sun heats the plastic, water will evaporate and condense on the underside of the plastic, dripping into the container. Depending on the climate and sunlight, you can collect up to 1-2 cups of clean water per hour. Monitor the still regularly to ensure it’s functioning properly and to collect the purified water.