Extend the life of your emergency water supply with our 5-year water preserver concentrate, designed to safely store drinking water for extended periods. This innovative product eliminates the need for frequent water replacement every 3 to 6 months, saving you time and resources. Our proprietary formula, proven effective through over 12 years of testing, purifies and keeps water bacteriologically safe. Measuring a compact 5 inches by 2 inches by 1 inch and weighing just 1 pound, this under-sink installation type is easy to incorporate into your emergency preparedness plan. With a capacity of 0.73 ounces, it's perfect for treating 55 gallons of water, providing a long-term water supply for your family or community.