Here are 49 ways to act for water and climate

The Unseen Blanket: Why Water Is Humanity’s Most Powerful Climate Lever

The planet is wrapped in a thick blanket of greenhouse gases, and as King Canute’s famous failure proved long ago, physics demands one truth: to cool down, you must remove the blanket. Time is not just short; it is vanishing. At our current rate of pollution, the entire remaining carbon budget to meet the critical $1.5^\circ \text{C}$ international target will be spent in the next two years.

The water community must face a stark reality: if the world’s water systems were a country, they would be the fourth-biggest emitter globally, contributing between 6-8% of all greenhouse gas emissions. Water is not just a victim of climate change; it is a powerful and untapped tool for climate action.

This is not just about adapting to drought and flood; it is about mitigation addressing the root cause of global heating. Here are the most critical actions the water sector must take, turning our greatest vulnerability into our greatest strength.

Immediate Mitigation: Turning Water Systems from Emitters to Saviors

The quickest, most measurable wins for the climate crisis start with altering how we manage water systems, specifically targeting the potent greenhouse gas, methane.

• Decarbonize the Farm: Implement Alternate Wetting and Drying (AWD) in rice irrigation instead of perpetual flooding. This simple shift reduces rice methane emissions dramatically while actually increasing crop yield.
• Keep Ecosystems Saturated: Treat natural wetlands, especially peatlands, as vital carbon bunkers. Keep them wet to maximize their capacity to sequester carbon and prevent them from releasing vast stores of methane.
• Harvest Waste Energy: Mandate the capture of methane from sanitation and wastewater treatment plants. Stop venting pollution; start converting it into usable electricity.
• Optimize Utilities: Slash the energy usage across all water utilities. Every kilowatt saved in pumping, treating, and moving water directly cuts power demand and associated emissions.

Beyond the Pipe: Integrating Water into Global Governance

The water crisis is inseparable from every other challenge. Our actions must break down existing silos and use water as the connective tissue for systemic change.

• Equity First: Center equity, affordability, and climate resilience in every policy. Solutions must be inclusive and use water as a tool to mitigate impacts on people, livelihoods, and health.
• Break the Silos: Use the momentum of global events (like the UN Climate Change Conferences) to integrate water into the governance of climate, food, biodiversity, and energy. We must treat the water-energy-food nexus as one unified challenge.
• Strategic Lever: Transform water from a passive input into a strategic lever for climate resilience. This requires regulatory reform, cross-sectoral coordination, and embracing digital tools.
• Listen to the Land: Incorporate Indigenous knowledge and local stewardship into national and global strategies. These time-tested approaches offer profound wisdom for ecological and social outcomes that pure technology often misses.

Scaling and Financing: From Pilot to Planetary Impact

Good ideas are useless unless scaled. The financial and planning strategies must be as bold as the climate challenge itself.

• Connect Local to Global: Take prompt, bold actions at multiple levels, connecting local successes (like specific wastewater treatment strategies) with global policy goals (like managing nitrogen and phosphorus pollution).
• De-Risk Investment: Scale up investments through strong public-private partnerships that incentivize innovation and share risk, moving successfully proven pilot projects toward systemic impact.
• Finance the Future: Aggressively utilize all available climate finance sources to secure funding for water and sanitation projects, engaging with sectors beyond the traditional water community to attract capital.
• Holistic Planning: Ensure planning achieves co-benefits by considering both short-term necessity and the long-term goals of adaptation and mitigation.

The evidence is clear: there is no climate solution without a water solution. The challenge is complex, but the path is defined. The water community holds the single greatest key to reversing the current crisis.

source:
https://worldwaterweek.org/news/49-water-and-climate-actions-from-the-siwi-seminar-series