Heavy precipitation events are associated with contaminated drinking water and water-borne disease in North America . Acute gastrointestinal illnesses increase with many hydro-climatological variables, including precipitation, streamflow and snowmelt . Extreme precipitation is associated with Campylobacter and Salmonella infections in the USA, particularly in counties characterised by farms and private well water . In Canada, human Giardia infections are associated with increased temperature, precipitation, pathogen presence in livestock manure, and river water level and flow . Land-use patterns and aquifer-types are associated with water-borne disease, and ecological zones with higher water-borne rates are projected to expand in range in Canada by 2080 .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report