Image by Peter Ganja
There is no single solution to addressing drought now spreading around the globe. The most effective approach combines using less water, maximizing existing supplies, and developing new sources. Communities that combine these strategies build long-term resilience against declining water supplies.
1. Modernize Agricultural Irrigation
Agriculture accounts for approximately 70% of global freshwater withdrawals, offering the largest potential for water savings.
Drip Irrigation: Replacing traditional flood irrigation with drip systems delivers water directly to plant roots, improving water-use efficiency by over 60% in certain crops.
Overcoming Adoption Barriers: While high initial equipment costs present an obstacle, targeted subsidies and financing programs help farmers make the transition.
2. Recycle and Reuse Wastewater
Instead of discharging treated wastewater, communities can clean and reuse it for irrigation, industrial processes, groundwater recharge, or advanced potable reuse (drinking water).
Global & Local Success: Israel recycles nearly 90% of its municipal wastewater for agricultural use. In California, Orange County purifies wastewater to replenish underground aquifers that feed local drinking wells.
3. Implement Desalination for Coastal Regions
Desalination provides coastal communities with a reliable freshwater source, primarily using reverse osmosis to force seawater through membranes that remove salt and impurities.
Key Considerations: Desalination is energy-intensive, costly, and produces concentrated brine waste. It is most practical where conventional freshwater sources are scarce and reliable energy is available.
4. Expand Underground Water Storage
Managed aquifer recharge creates underground water reserves by allowing water to soak into suitable land or directly injecting treated water into aquifers during wet periods.
Strategic Timing: Widely used across Arizona, California, and Texas, this strategy requires proactive management—replenishing groundwater reserves before the next severe drought hits.
5. Apply Cloud Seeding as a Supplemental Tool
Cloud seeding enhances precipitation by introducing agents into existing clouds to encourage rain or snow.
Realistic Expectations: A U.S. Government Accountability Office (GAO) review found precipitation increases ranging from 0% to 20%, depending on atmospheric conditions. Because it cannot create rain from clear skies, cloud seeding serves primarily as a supplemental tool for building mountain snowpack.
6. Reduce Urban and Household Water Demand
Urban water efficiency in commercial facilities and residential properties is just as critical as agricultural conservation.
Drought-Tolerant Landscaping: Outdoor watering accounts for a massive share of residential use. Xeriscaping—replacing conventional lawns with native plants, efficient drip lines, and moisture-retaining mulch—drastically cuts demand.
Commercial and Restroom Fixture Upgrades: High-efficiency toilets using 1.28 gallons per flush (gpf) are now the standard benchmark for interior savings. Furthermore, schools and commercial facilities achieve dramatic water reductions by installing waterless urinals, saving up to 35,000 gallons of water per fixture annually.
7. The Bottom Line
We can do this. We have many opportunities and technologies available to us to help reduce water consumption and use water much more efficiently.
