Climate-change impacts on both the quantity and quality of freshwater resources will hinder the attainment of SDG-6 . Contamination of drinking water is caused by wildfires and drought that contribute to elevated levels of nutrients , heavy metals , salts , hydrocarbons, pesticides and even pharmaceuticals. Heavy rains and flooding also increase nutrients, heavy metals and pesticides, as well as turbidity and faecal pathogens in water supplies-especially when sewage treatment plants are overwhelmed by runoff . Pharmaceuticals and personal-care products  are contributing to the vulnerability of urban waters. A study of vulnerability assessment of urban waters in highly populated cities in India and Sri Lanka, through analysing the concurrence of Pharmaceuticals and Personal Care Products , enteric viruses, antibiotic-resistant bacteria, metals, faecal contamination and antibiotic resistance genes , also underlines the need for a resilience strategy and action plan .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report