Water quality, drought and flooding

Climate change affects water quality in different ways. Heavy rainfall increases the presence of pathogens and chemical contaminants in drinking water, recreational water and surface water, while higher temperatures can promote the growth of organisms such as blue-green algae. Exposure to contaminated water can cause infections and skin and gastrointestinal problems.

At the same time, flooding brings other health risks. Mould growth due to damp conditions or flooding in homes can cause respiratory problems, while floods may force people to leave their homes temporarily or permanently. For many people, this is a very distressing experience as it affects fundamental needs such as safety and housing. The impact therefore extends beyond the immediate physical consequences. Stress, anxiety and other long-term mental health problems are common after severe flooding.

The health effects of water quality and flooding are unevenly distributed. Children, older people and people with chronic conditions are particularly vulnerable. But the living environment also plays an important role. People living in areas at greater risk of flooding, in poorly insulated homes or with limited means to recover from damage are often more severely affected.

Within the Climate Health Institute, we bring together biomedical, social and environmental research to better understand how changes in water quality and water safety affect health. We study not only microbiological and chemical exposure, but also the indirect consequences of flooding, such as mould growth in homes, disruption to healthcare and the effects of long-term stress. We also investigate how policy, the design of the living environment and preventive measures can contribute to fair and effective protection.