Understand your impact
Almost everything you own took water to make, usually far more than you would guess. Pick an object, make a guess, then see the answer and how we worked it out.
Pick an object
How much water does it take to make a reusable coffee cup?
Reusable coffee cups
And how many coffees until it beats paper cups, once you count the washing up?
Make your guessHow much water does it take to make a power bank?
Power banks
Why cheap ones can cost the planet more than you think.
Make your guessWhich of these giveaways took the most water to make?
Conference giveaways
The hidden water in a bag of freebies.
Make your guess
Why a water company cares
Most of the water in these objects was used in factories: making paper and card, glass, plastics, metals and electronics. Much of it was used once and discharged.
That is the water Danu Water works on. When industrial sites can clean and reuse their own water, the hidden water in everyday things goes down.
Where these came from
We built these explorers for our booth at TechCrunch Disrupt 2026 in San Francisco, where visitors guessed the water footprint of objects on our table. Each page shows its numbers, assumptions and sources.
Want to cut the water behind what you make?
If you run an industrial site, we can help you reuse your water.