Sources and dates

Every number on this site traces to one of the pages below. All were read on Nov 5, 2026 unless a line says otherwise.

Official guidance

• Ready.gov (FEMA): https://www.ready.gov/water
• Ready.gov (FEMA): https://www.ready.gov/kit
• CDC: https://www.cdc.gov/water-emergency/about/how-to-create-and-store-an-emergency-water-supply.html
• CDC: https://www.cdc.gov/water-emergency/about/how-to-create-and-store-an-emergency-water-supply.html
• American Red Cross: https://www.redcross.org/get-help/how-to-prepare-for-emergencies/survival-kit-supplies.html
• FDA: https://www.fda.gov/food/nutrition-facts-label/calories-nutrition-facts-label

City offices

• New York City, NYC Emergency Management: https://www.nyc.gov/site/em/ready/get-prepared.page
• Los Angeles, Ready Your LA Neighborhood (City of Los Angeles Emergency Management): https://ready.lacity.gov/get-prepared
• Chicago, Chicago Department of Public Health (with OEMC): https://www.chicago.gov/city/en/depts/cdph/supp_info/health-protection/plan-together.html
• San Francisco, City and County of San Francisco (sf.gov): https://www.sf.gov/gather-supplies-pack-what-youll-need-for-an-emergency-in-san-francisco
• Seattle, Seattle Office of Emergency Management: https://www.seattle.gov/emergency-management/prepare/prepare-yourself
• Portland, Oregon, Portland Water Bureau: https://www.portland.gov/water/store-emergency-water
• Houston, Ready Houston (City of Houston Office of Emergency Management): https://www.readyhoustontx.gov/build-a-kit
• Boston, City of Boston Office of Emergency Management: https://www.boston.gov/departments/emergency-management/how-make-emergency-kit
• Washington, DC, DC Homeland Security and Emergency Management Agency (ready.dc.gov): https://ready.dc.gov/kit
• Philadelphia, Philadelphia Office of Emergency Management: https://www.phila.gov/2020-01-21-resolve-to-be-ready-in-2020

Products

• ReadyWise 52 Serving Prepper Pack Bucket: https://readywise.com/products/52-serving-prepper-pack-bucket; second source https://mountainready.online/products/readywise-52-serving-prepper-pack-bucket
• ReadyWise 60 Serving Entree Bucket: https://readywise.com/products/60-serving-entree-bucket; second source https://www.campsaver.com/wise-prepared-meals-wise-emergency-food-kit-60-ser.html
• ReadyWise 84 Serving Breakfast & Entree Grab & Go Bucket: https://readywise.com/products/84-serving-breakfast-entree-grab-go-bucket; second source https://prepsos.com/products/readywise-breakfast-and-entree-grab-and-go-84-servings
• ReadyWise 120 Serving Emergency Food Supply: https://readywise.com/products/120-serving-emergency-food-supply; second source https://mountainready.online/products/120-serving-entree-only-grab-and-go-bucket
• ReadyWise 120 Serving Breakfast Bucket: https://readywise.com/products/120-serving-breakfast-bucket; second source https://readywise.com/products/120-serving-breakfast-bucket-1
• Mountain House 15-Day Emergency Food Supply Kit: https://mountainhouse.com/products/15-day-emergency-food-supply-kit
• Mountain House 30-Day Emergency Food Supply Kit: https://mountainhouse.com/products/30-day-emergency-food-supply-kit
• Mountain House 14 Day Emergency Food Supply: https://mountainhouse.com/products/just-in-case-14-day-emergency-food-supply; second source https://northriveroutdoors.com/products/mountain-house-14-day-emergency-survival-food-84-servings
• Mountain House Just in Case 3 Day Emergency Food Supply: https://mountainhouse.com/products/just-in-case-3-day-emergency-food-supply
• Legacy Food Storage 120 Serving Entree Bucket: https://www.legacyfoodstorage.com/products/120-serving-entree-bucket; second source https://prepsos.com/products/120-serving-entree-bucket-29-lbs
• Legacy Food Storage 60 Serving Entree Bucket: https://www.legacyfoodstorage.com/products/60-serving-entree-bucket
• Legacy Food Storage 32 Serving Family 72 Hour Emergency Food Kit: https://www.legacyfoodstorage.com/products/32-serving-family-72-hour-emergency-food-kit
• Legacy Food Storage Premium 240 Serving Package: https://www.legacyfoodstorage.com/products/premium-240-serving-package
• Legacy Food Storage Premium 360 Serving Package: https://www.legacyfoodstorage.com/products/premium-360-serving-package
• Valley Food Storage 72-Hour Emergency Kit: https://valleyfoodstorage.com/products/72-hour-emergency-food-kit
• Valley Food Storage 2 Week Emergency Food Kit: https://valleyfoodstorage.com/products/175-servings-long-term-food-kit
• Valley Food Storage 30 Day Emergency Food Kit: https://valleyfoodstorage.com/products/350-serving-long-term-food-kit
• Augason Farms 30-Day 1-Person Emergency Food Supply Kit: https://augasonfarms.com/products/30-day-1-person-emergency-food-supply-kit-194-servings
• Nutrient Survival 14-Day Emergency Food Kit: https://nutrientsurvival.com/products/14-day-emergency-food-kit
• Nutrient Survival 30-Day Emergency Food Kit: https://nutrientsurvival.com/products/30-day-emergency-food-kit
• Reliance Water-Pak 2.5 gallon: https://relianceoutdoors.com/products/water-pak-5g-20l
• Reliance Water-Pak 5 gallon: https://relianceoutdoors.com/products/water-pak-5g-20l
• Reliance Aqua-Tainer 4 gallon: https://relianceoutdoors.com/products/aqua-tainer-4g-15l
• Reliance Aqua-Tainer 7 gallon: https://relianceoutdoors.com/products/aqua-tainer-4g-15l; second source https://www.sportsmans.com/camping-gear-supplies/hydration/water-storage-containers/reliance-aqua-tainer-7-gallon-water-container/p/100975
• WaterBrick 3.5 gallon brick: https://www.legacyfoodstorage.com/products/31-5-gallon-waterbrick-bundle-water-treatment-included; second source https://blessingsgrowmeadows.com/products/waterbrick
• Legacy Food Storage 5 Gallon Blue Stackable Water Container: https://www.legacyfoodstorage.com/products/5-gallon-blue-water-tank-stackable-container

Arithmetic done here

• Days at 2,000 = total calories / 2,000.
• Cubic inches = length x width x height, or cubic feet x 1,728.
• Water share = gallons x 231 / outside cubic inches.
• Prep water gallons = cups / 16.