Stuttgart residents consume around 133 liters of drinking water per person per day. Around a third of this comes out of the tap and shower as hot water - between 27 and 49 liters a day. In the whole of Stuttgart, that's more than 9 million cubic meters of hot water per year.

This is where the "Stuttgart cracks the 10 percent" campaign sees huge savings potential: over the year as a whole, all Stuttgart residents could save 1.6 million cubic meters of hot water, 27,000 tons of CO2 and 23.3 million euros for electricity, gas and water.

The campaign gives you a few simple tips on how you too can save hot water at home:

Tip 1: Use an economy shower head - save 32 percent
The low-flow shower head - a water-saving hand shower - only lets half as much water flow through the shower. This saves a 2-person household 365 euros a year.

Tip 2: Wash your hands cold - save 7.5 percent
It's a bit of a habit, but it's enough to keep your hands clean: Cold water at the sink. Saves 7.5 percent energy and 85 euros per year.

Tip 3: Use a dishwasher instead of washing up by hand - save 6.5 percent
Leave the washing up to the dishwasher - it can do it more economically: 6.5 percent less energy, 75 euros more in your pocket.

And here you can find more free tips on saving hot water.

By the way: The "co2online" team, which initiated the campaign, also provides you with a "water check" online. This gives you an overview of your hot water consumption in just five minutes and allows you to compare it with average values. You will also receive savings recommendations tailored to your situation.

Click here for the "water check".