55 Gallon Water Preserver Concentrate 5 Year Emergency Disaster Preparedness, Survival Kits, Emergency Water Storage, Earthquake, Hurricane, Safety The first and only product accepted and proven safe for 5-year water storage! Proven effective in over 12 years of testing and use! Proprietary formula and strict laboratory analysis insure potency Manufactured from raw materials that are approved for drinking water Made in the USA! Recognized and licensed by U.S. and state EPA's.