Build it yourself survival/emergency water purification using Black Berkey Filter Elements. Get free food-grade containers at bakeries and food stores, spigots at Amazon.com or local hardware stores, and Berkey Black filters on the Internet. Be prepared or be ensnared!
This system will filter and help PURIFY dirty water, removing most germs, VOC’s, heavy metals, and other nastiness from lakes, streams, puddles, and other sources of water (unless extremely polluted or poisonous). It can also be used on a daily basis to purify your tap water. I also added the PF-2 (not pictured) Fluoride reduction elements.