Emergency Water Supply Calculator
Emergency Water Supply
Calculate water storage needed for emergency preparedness.
Formula
Total = (People x Days x Gal/Day) + (Pets x Days x 0.5)
Frequently Asked Questions
How much water should I store per person?
Store at least one gallon per person per day for drinking and sanitation.
How long does stored water last?
Commercially bottled water lasts up to two years; rotate home-stored water every 6 months.