How Much Bottled Water for 45 People?
Quick Answer
For 45 people at a large party, you need approximately 90 16oz bottles of bottled water.
Estimated cost: $23 - $68
How We Calculate
Start with guest count
45 people
Multiply by drinks per person
45 × 2 = 90 total 16oz bottles
Convert to purchasing units
90 ÷ 1 servings per 16oz bottle = 90 16oz bottles
Tips for Serving Bottled Water to 45 Guests
- ✓ Buy in bulk from warehouse stores
- ✓ Keep in coolers with ice
- ✓ Essential for outdoor and summer events
- ✓ Have extra for designated drivers
- ✓ Consider a water dispenser for eco-friendly option
Service Plan for 45 Guests
For a large party, plan on approximately 90 total servings over a 3-hour event. Keep a 10-15% buffer so you can handle late arrivals and heavier-than-average consumption.
Since bottled water is often a base beverage, stage replacement stock in coolers so the serving area stays full without crowding guests.
- Prep checklist: 108+ cups, 68+ lbs of ice, and backup storage nearby.
- Chill strategy: pre-chill at least 70% before service to reduce ice melt and dilution.
- Replenishment cadence: refresh serving stations every 30-45 minutes instead of all at once.
Frequently Asked Questions
How much bottled water do I need for 45 people?
For 45 people at a standard 3-hour party, you need 90 16oz bottles. This is based on 2 16oz bottles per person.
What's the cost of bottled water for 45 guests?
Expect to spend $23 - $68 on bottled water for 45 people, based on typical prices of $0.25-$0.75 per 16oz bottle.
Should I buy extra bottled water?
Yes! We recommend adding 10-15% extra for unexpected guests or heavy drinkers. That's about 14 more 16oz bottles.
Editorial Process and Sources
Last reviewed: February 19, 2026
Publisher: FeedMyGuests Editorial Team · Contact: contact@feedmyguests.com
This page is generated from structured bottled water consumption baselines and conversion rules, then reviewed for calculation consistency and internal-link quality checks.
Reference Sources
- USDA FoodData Central Retrieved: February 19, 2026
- NIH Rethinking Drinking (standard drink references) Retrieved: February 19, 2026
- FDA Food Safety Guidance Retrieved: February 19, 2026