55 Gallon Water Preserver Concentrate 5 Year Emergency Disaster Preparedness, Survival Kits, Emergency Water Storage, Earthquake, Hurricane, Safety 55 Gallon Water Preserver Concentrate 5 year water purification - best for long term food storage water solution Extends the safe storage life of emergency drinking water. Water Preserver provides guaranteed 5-year storage* for regular tap water or commercial bottled water. The first and only product accepted and proven safe for 5-year water storage Recognized and licensed by U.S. and state EPA's