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Historical and future water quality risks driven by climate change: Strategic management and overcoming challenges
Minhee Kim1, Min Jang2, Choe Earn Choong2
1Ministry of Environment, 229 Misagangbyeonhangang-ro, Hanam-si, Gyeonggi-do 12902, Republic of Korea.
Water Research
|October 16, 2025
Summary
Climate change is degrading water quality through warming and extreme weather. Mitigation strategies are crucial to prevent severe impacts like hypoxia and eutrophication, preserving aquatic ecosystems.
Area of Science:
- Environmental Science
- Climate Science
- Water Quality Management
Background:
- Climate change elevates water and land temperatures, exacerbating extreme weather events.
- Global water quality is increasingly threatened by climate-driven changes.
Purpose of the Study:
- To evaluate climate-driven water quality risks using extensive datasets.
- To project future water quality under different climate scenarios.
Main Methods:
- Analysis of over 2.2 million water quality measurements.
- Utilized 50 years of temperature records (1973-2023).
- Employed Representative Concentration Pathways (RCP) for future projections.
Main Results:
- Observed significant warming trends: +0.35 °C/decade (land), +0.30 °C/decade (water).
- Identified heightened seasonal vulnerabilities in spring and summer.
- Projected severe hypoxia, eutrophication, and biodiversity loss under RCP 8.5, contrasting with preserved quality under RCP 2.6.
Conclusions:
- Climate change poses significant risks to water quality, including dissolved oxygen depletion and nutrient dynamics.
- Stringent climate change mitigation is essential to maintain water quality and ecosystem resilience.
- Adaptive strategies like nutrient control and ecosystem-based approaches are vital for managing climate-driven water quality challenges.
Keywords:
Challenges on water qualityClimate changeResilienceScenario-based water quality projectionsThermal sensitivity of water qualityMore Related Videos
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