Why BottleChallenge exists
We deal with plastic that doesn’t exist yet
A plastic water bottle is used for a few minutes and takes centuries to decompose. Over 500 billion are produced every year, more than 15,000 every second, enough to cover a tennis court every four seconds, around the clock. More than 90% never get recycled.
Every other answer to this problem deals with plastic that already exists: collecting it, recycling it, offsetting it. BottleChallenge prevents it from being produced in the first place, by changing the everyday habit that creates it.
What BottleChallenge is
A free mobile app and web platform that shows where you can refill a reusable bottle instead of buying a single-use one: cafés, restaurants, bars, hotels, public fountains and other institutions. Over 57,000 points in 95 countries, and growing daily.
Each refill is confirmed by holding the phone to an NFC tag at the venue and recorded with a timestamp and location. That single gesture earns the user EcoDrops and creates a verifiable record of one plastic bottle that will never be made.
Find
Open the map, walk to the nearest refill point
Refill & tap
Fill your bottle, hold your phone to the NFC tag
Earn
Collect EcoDrops, redeem them for experiences
The goal: a lasting change of habit
BottleChallenge aims to permanently reduce the number of single-use bottles by changing daily habits at scale. Three things have to work at once:
- 1
Infrastructure
The refill network must be dense enough that the alternative to plastic is available always and everywhere. Without it, even the most motivated user goes back to plastic for lack of choice.
- 2
Motivation, not moralizing
People change behaviour when the new thing is easier, cheaper and more rewarding than the old one. EcoDrops, gamification and instant rewards make skipping plastic pay off for everyone, regardless of their views on ecology.
- 3
Trust in tap water
Tap water in most European cities meets high standards and is tested more rigorously than bottled water. Yet decades of bottled-water marketing built the belief that it is worse. This is not a water quality problem; it is a trust problem. When your favourite café fills your bottle, that trust transfers to tap water itself. Repeated positive experience beats any information campaign.
Why it works
Habit change doesn’t come from knowledge. People know plastic is harmful and still reach for the bottle, because it is at hand and requires no thought. So we don’t lecture and we don’t scare with data. Instead, we arrange the everyday situation so that reaching for a reusable bottle is easier and more rewarding. Four mechanisms work together:
01Availability
Even a motivated person goes back to plastic when there is nowhere to refill. The map gathers every refill point in one place and leads to the nearest one. Refilling becomes something you do on the way, not a logistics problem.
02Reward instead of appeal
Every confirmed refill earns EcoDrops, plus streaks, rankings and challenges. The human brain values a small benefit now over a big one later, so a concrete reward works harder than any appeal to conscience, even for people who don’t care about ecology.
03Rewards that create no new waste
EcoDrops are exchanged only for experiences: cinema, theatre, museum and concert tickets. It is hard to reduce waste by handing out more gadgets. An experience stays in memory and supports local culture.
04Community and friendly competition
People stick to a habit longer when they do it together and can compare. Teams of friends, families or co-workers compete in rankings, adding social motivation to the individual reward.
Each of these leads to the same effect: the new behaviour is easy and rewarding, so it repeats, and repetition becomes a lasting habit.
An ecosystem where everyone contributes and everyone gains
Individual users
Carry a bottle, find a point on the map, confirm the refill with an NFC tap, collect EcoDrops. Free water in 57,000+ places and cultural rewards. The environment gets one bottle fewer.
Get the appPartner venues
Serve tap water free of charge to anyone who asks; a single refill costs a fraction of a cent. In return: visibility on the map, new guests walking in, and a measurable environmental record.
For venuesReward partners
Provide the tickets, passes and discounts users redeem for EcoDrops. In return they reach an audience that is already motivated to visit, and one reward usually brings more than one guest.
For reward partnersCompanies & institutions
Engage employees, clients and partners through Teams and receive audit-ready ESG data. Every participant is one more person giving up single-use plastic.
For companiesUsers build the map
BottleChallenge is one of the few platforms of its kind where users are not just consumers of the map but its active co-creators. Anyone can add a public fountain or refill point that isn’t published yet: location, photo, confirmation, a few seconds. And they earn EcoDrops for it. Users also report broken or missing points, which keeps the data current without central control.
Every new point passes a two-stage verification: automatic (geolocation matches the address, photo is current) and community-based (confirmation by the first users who physically visit). Only then does it appear on the global map.
The more users, the better the map; the better the map, the more users. It is the same flywheel that powers OpenStreetMap and Wikipedia. And for cities, a growing map of actively used fountains is a hard argument for maintaining and building water infrastructure.
Non-profit, by design
BottleChallenge is a non-profit project of the BrainGreen Foundation (Warsaw, Poland). It took almost three years to build: research into habit-change mechanics, ecosystem design, software. It is developed by dozens of volunteers across several continents.
The app is completely free for individual users, carries no ads and never will, and collects no personal data for commercial purposes. The project is funded by business subscriptions to the Teams module and by Eco-In, the foundation’s platform for verifiable environmental impact data, which is what keeps the app free for everyone else.
Impact numbers are calculated conservatively from a life-cycle analysis of a 500 ml single-use PET bottle according to ISO 14040/44, from raw material production through transport to waste handling.
Every refill is one bottle that never gets made
Join as a user, a venue, a reward partner, a company or a city. Each path has a real environmental effect from day one.