Climate change and water are intricately intertwined. The complicated effects of climate change on water are well known. The majority of the effects of climate change are related to water, including erratic rainfall patterns, decreasing ice sheets, rising sea levels, floods, and droughts 

As temperatures rise, they alter precipitation patterns and the entire water cycle, aggravating both water scarcity and water-related dangers (UNICEF).Just 0.5 percent of the water on Earth is freshwater, and the supply is being gravely threatened by climate change. Terrestrial water storage, which includes soil moisture, snow, and ice, has decreased by 1 cm year during the previous 20 years, having significant effects on water security (WMO).

Although there is significant regional variation, limiting global warming to 1.5°C as opposed to 2°C will roughly cut the percentage of the world population predicted to experience water scarcity in half (IPCC).Increasing atmospheric moisture due to rising global temperatures leads to more storms and heavy rains, but strangely also paradoxically more intense dry periods as more water evaporates from the land and changes in global weather patterns The World Bank.

In most locations, the frequency of heavy precipitation events will most likely rise during the twenty-first century, along with the number of rain-related floods. The proportion of territory experiencing extreme drought at any given time is also anticipated to rise (IPCC).Seventy percent of all fatalities resulting from natural disasters are due to water-related disasters, which have topped the list of disasters over the previous 50 years (World Bank).

Reduced greenhouse gas emissions and defence against climate risks can be achieved by maintaining healthy aquatic ecosystems and enhancing water management (Water and Climate Coalition).According to the UNEP, wetlands act as a barrier against harsh weather conditions. They act as a natural barrier against storm surges and soak up extra rain and water. Wetlands also serve as a water storage and filtration system through the plants and microbes they support.

Early warning systems for floods, droughts, and other dangers involving water have a ROI of more than ten times and can greatly lower the chance of disaster: A 24-hour storm warning can reduce the resulting damage by 30% (WMO).Mangroves, seagrasses, marshes, and swamps are examples of wetlands that are excellent carbon sinks, absorbing and storing CO2 to assist lower greenhouse gas emissions (UNEP).More than 360,000 infants might be saved each year by water supply and sanitation systems that can endure climate change, according to a New Climate Economy assessment.