Savings: You can save money by filling your bottle with tap water instead of buying a new drink. For example, switching from soda bottles to a refillable water bottle on work days will save about 1,000 euros a year.
Remember this: Using the same bottle several times may seem unhygienic to you. However, there are many machine-washable glass and metal bottles on the market now.
Reducing your carbon footprint: Filling the same water bottle ten times reduces your carbon footprint slightly. The savings come because you don’t buy a new PET (polyethylene terephthalate) bottle each time you need to quench your thirst.