Bathing or showering – which is more ecological?

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Showering is better than taking a bath – this is often recommended for energy savings. But if you take a warm shower for more than ten minutes, you expend more energy than when you’re chatting in the tub.

Depending on the size of the tub, you need between 200 and 250 liters of water and a lot of energy to heat it: more than one liter of heating oil per bath. The energie-umwelt.ch platform, the information platform of the energy and environment departments of the cantons of Bern, Friborg, Geneva, Jura, Neuchâtel, Vaud and Valais, calculates that you can relax even in a bathtub half the size. fully loaded. This reduces water and energy consumption compared to a full bath.

A 10-minute shower provides a full bath.

A five-minute shower with an ordinary shower head that delivers 20 to 30 liters of water per minute consumes almost as much water as a half-full bath. A ten-minute shower with an ordinary shower head uses more water than a bath.

Do not open the shower faucet all the way so that the cold water can flow, and let it immediately run under the water jet: “You need to make some progress,” explains Roger Häberli (59). Take a shower and turn off the water. He lives with his partner Astrid Lehmann (50) in a bright four and a half bedroom flat in one of Switzerland’s first climate neutral settlements in Männedorf ZH. Thanks to a screen in the shower, it knows exactly how much water it uses.

Calculate water consumption per minute

If you want to know how much water (liters per minute) your own shower uses, you can measure it yourself. Here’s how it works: Hold a 1 liter container with a measuring scale under the shower jet and measure how many seconds it takes to fill it.

Calculate the water consumption per minute as follows: divide the number of liters by the number of seconds and multiply the result by 60.

Use less thanks to technology

Shower heads with an energy label use less than twelve liters of water per minute. Taking a five-minute shower requires less than 60 liters of water; that’s about a quarter of the water needed for a bath. Even if you’re in the shower for ten minutes, a water-saving shower head uses less water than a half-filled bath, which requires 100 to 125 liters of water.

You can also screw a flow limiter between the faucet and the hose to reduce the amount of water. This restrictor bends into the faucet like a shower hose.

Or taking less long, less hot showers without technology helps both the environment and your wallet.

Source : Blick