FEMA recommends at least 1 gallon per person per day for drinking and sanitation. In hot climates, or for people with medical needs, plan for more — up to 2 gallons per person daily.

No, this calculator is based on human use only. For pets, estimate:

• Dogs: 0.5 to 1 gallon per day (based on size)
• Cats: ~0.25 gallons per day

Use food-grade, BPA-free plastic, or tanks specifically made for water storage. Avoid containers that previously held chemicals or non-food items.

If properly sealed and kept in a cool, dark place, commercial water can last up to 5 years. Home-stored tap water should be rotated every 6–12 months unless treated with water preservatives.

If you're filling containers with municipal tap water, it's usually already treated. For well water or uncertain sources, use unscented bleach or a water treatment product to ensure safety.

Yes, but keep containers out of direct sunlight and away from heat or freezing temperatures. Sunlight can break down plastic and promote algae growth.

There's no harm in storing extra. Just make sure your storage location can handle the weight — 1 gallon = 8.34 lbs. A 55-gallon barrel weighs over 450 lbs when full.

Yes! You can explore our full selection of tanks, barrels, and accessories here. We also offer bundle discounts for families or group preparedness. For inquiries regarding group discounts please email info@emergencywatertanks.com or give us a call at 435-522-3386.