Water calculator
Water math gets real fast.
Use this as a planning target for stored water. Add filtration and treatment after storage, not instead of it.
Water worksheet
Water target
69
recommended gallons
That looks like 14 five-gallon containers or 10 seven-gallon jugs. Bare minimum: 53 gallons.
One gallon per person per day is the old baseline. We like a margin because pets, heat, hygiene, and cooking all have a vote.
Read water buying notes