Days of water remaining
Compare usable inventory with a chosen daily consumption rate.
How it is calculated
Daily consumption = people × allowance. Duration = usable stock ÷ daily consumption.
Assumptions & limits
Assumes constant demand, no leaks and no additional deliveries. Use a separately assessed safe-water inventory. Defaults are illustrative planning inputs, not recommended minimums or a guarantee of safety.
Planning estimates only. Defaults are illustrative, not personalized recommendations. Do not use these calculations as medical, structural, electrical installation or other safety certification. For informational and educational purposes only. CivArk is not medical, legal, engineering or other professional advice. Verify information with qualified professionals and current local authorities. Estimates and preparedness plans cannot guarantee safety or survival.