DIY Solar Water Distilling! Simple Solar Water Distiller! Easy DIY. Great for survival/SHTF situations. made using 2 clear (plastic or glass) bottles and glue (or tape). fill one bottle with dirty/or saltwater. then connect the second bottle and set in the sun. within a few minutes the water begins to evaporate and the other bottle collects the clean distilled water vapor. tips: make sure the bottles have an airtight connection. prop up bottles at a slight angle so as the dirty/or saltwater starts to evaporate – the max. amount of water vapor will travel up to the higher collection container. works best in bright sun.