Recommended by Top Emergency Professionals Water Preserver is the first and only product recognized and proven effective for 5 year water storage, registered and licensed by the federal and state EPA. Water Preserver is a proprietary formula of stabilized, pH-balanced Sodium hypochlorite with highly effective residual action that kills bacteria, viruses, mold and fungus Directions for use enclosed with each bottle. To be used with; New (unused), blow molded, rigid, all plastic containers made of virgin polyethylene resin (5 Year).

 
Be sure to also buy 55 Gallon Water Barrel to preserve emergency water! 
 
Add a Siphon Pump and Bung Wrench for a complete water storage system.