Floods intensify the mixing of floodwater with wastewater and the redistribution of pollutants . In addition, contaminated floodwaters pose an immediate health risk through waterborne diseases . Wildfires, along with heavy rainfalls and floods, can also affect turbidity, which increases drinking water treatment challenges and has been linked to increases in gastrointestinal illness . Droughts reduce river dilution capacities and groundwater levels  increasing the risk of groundwater contamination . More generally, contaminated water diminishes its
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report