Looking to save some money on your water bill? You might want to change up your shower routine, recent research suggests. Researchers at the University of Surrey in the UK and others studied the showering habits of German residents. They identified several factors linked to greater water consumption, such as frequently turning off and on the shower. The results indicate that even small tweaks in how we take a shower could lead to meaningful improvements in saving water, the researchers say. “It turns out the biggest drivers of water use are not who you are or where you live. What matters most is what you actually do in the shower,” said study co-author Pablo Pereira-Doel, a fellow at the Institute for Sustainability at the University of Surrey, in a statement from the university. How to save some water Water remains a precious commodity. And in many parts of the world, showers and baths are the single largest contributor to the water bill, accounting for 25% to 40% of indoor water use on average, according to studies cited by the researchers. While there’s been a lot of focus on using policy (price increases) or technology (more efficient showerheads) to reduce shower-related water consumption, the researchers say less attention has been paid to studying people’s actual habits in the shower or tub.