Calculadora de Água da Torneira vs Garrafa

This calculator compares the financial cost and environmental impact between consuming tap water and bottled water. It estimates how many 500 ml plastic bottles you would use per year based on your daily water consumption, as well as calculating the CO₂ equivalent emissions associated with the production and disposal of those bottles. You can also compare the annual cost of tap water, considering your local water tariff. The tool helps visualize differences in savings and ecological footprint.

The operation is simple: enter your daily water consumption in liters, the water tariff per cubic meter (R$/m³), and optionally the average cost of a 500 ml bottle. The system calculates the number of bottles consumed per year (dividing annual consumption by 0.5 liters), CO₂ emitted (multiplying bottles by 0.082 kg), annual cost of bottled water, and tap water cost (liters per year divided by 1000 times tariff). The result shows potential savings and emission reductions.

Use this calculator to decide between buying bottled water or using filtered tap water. It is useful for households, offices, and anyone looking to reduce expenses and environmental impact. For example, families that consume many liters per day can save hundreds of reais per year. It also raises awareness about plastic waste and carbon emissions from bottle production and transport.

Cautions: the calculator uses an average CO₂ emission per bottle (0.082 kg), which may vary by brand and production location. Tap water cost does not include possible filters or additional treatment. Consider local water quality: if tap water is not potable, purification costs should be included. Results are estimates and do not replace a detailed life cycle analysis.