Food system innovation is inseparable from water policy

Protein diversification can be a bridge between the two.

Credit: Shutterstock/Straga

In Türkiye’s Konya basin, hundreds of massive sinkholes have appeared as aquifers collapse from groundwater over-extraction.

In South Asia, groundwater depletion and erratic monsoons are pushing hundreds of millions toward severe water stress.

In North America, the Rio Grande basin—vital to millions of people and millions of acres of farmland—is being consumed faster than it can naturally replenish. A historic snow drought in the Western U.S. this year will likely only worsen an already stressed water supply.

Why is this happening? Global water bankruptcy.

A recent United Nations report argues that humanity has entered an era where we are drawing down the planet’s hydrological savings faster than our groundwater, glaciers, wetlands, and ecosystems can recover. The result is not merely water stress but structural failure in the systems that support agriculture, cities, and ecosystems.

Together, these signals indicate that humanity’s relationship with one of life’s most fundamental resources is out of balance. To build a future that can sustain a growing population, it’s time to reimagine how we produce our food. Diversifying our protein sources is a major tool we can lean into to reduce our water use.

Livestock production is a thirsty industry

Modern livestock production is an inefficient way to produce protein. Animals consume large quantities of feed crops like corn and soy, but convert only a fraction of those inputs into edible meat. These crops require significant water—not to mention land and fertilizer—to grow.

Let’s look at the numbers: producing a pound of beef can take around 1,800 gallons of water—far more than plant-based crops used directly for human food. The result is a system that amplifies water demand by cycling crops through animals rather than growing them to feed people directly.

At the same time, livestock operations contribute heavily to nutrient runoff and water pollution. Fertilizers applied to feed crops and manure from livestock facilities often wash into rivers and groundwater, creating harmful algal blooms and “dead zones” that devastate aquatic ecosystems.

In agricultural regions across the world, nitrate contamination from livestock and fertilizer runoff is now seeping into shrinking aquifers and polluting the very water reserves that communities depend on.

This creates a double burden: water is being depleted faster than it can be replenished, and the water that remains is increasingly polluted. Addressing water scarcity, therefore, requires that we rethink protein production.

Why water is the ultimate policy bridge

Water sits at the intersection of nearly every major policy challenge of the 21st century. It shapes food security, energy production, public health, biodiversity, climate resilience, and geopolitical stability. When water systems fail, the consequences ripple across societies, affecting prices, livelihoods, migration patterns, and political stability.

The concept of water bankruptcy raises the stakes: if societies have overspent their hydrological budgets, the path forward requires systemic change rather than incremental fixes. Governments must rethink water-intensive industries, agricultural practices, and development pathways.

That conversation inevitably leads to food. Because if water is the bridge, our food systems are among the heaviest loads it must carry. Agriculture accounts for roughly 70 percent of global freshwater withdrawals, making it the largest driver of water demand worldwide. And within agriculture, the production of animal protein is among the most resource-intensive activities on Earth.

At a time when nearly 4 billion people experience severe water scarcity at least one month each year, and three-quarters of humanity live in water-insecure countries, continuing to expand this system raises serious questions about long-term sustainability. Our food system needs a pressure release valve.

A different way to produce protein

Plant-based and cultivated meat can serve as that lever, ushering in a new era of efficiency in meeting rising global demand for animal products.

Research supported by GFI shows that plant-based meat requires up to 95 percent less water and results in 93 percent less water pollution than conventional meat. Other studies find that some alternative proteins can reduce land and water use by up to 99 percent compared with beef, while also lowering greenhouse gas emissions and nutrient runoff.

These efficiency gains have profound implications for water security. Producing the same amount of protein with fewer resources reduces pressure on aquifers, rivers, and ecosystems while also lowering agricultural pollution. Instead of growing crops to feed animals, alternative proteins allow us to produce protein directly from plants, microbes, or cells.

But the potential advantages of alternative proteins don’t stop there. Like water, they are their own policy bridge across multiple global priorities:

• Water security: dramatically reducing freshwater demand in agriculture

• Climate mitigation: lowering greenhouse gas emissions from livestock production

• Public health: reducing antibiotic use and zoonotic disease risks

• Economic resilience: enabling new food manufacturing industries and opportunities for farmers

• Biodiversity protection: freeing land for ecosystem restoration

• Food security: creating more resilient supply chains that are less vulnerable to climate and disease-related shocks

Few innovations can simultaneously advance so many policy objectives.

A bridge to the future

For years, climate change has been the dominant frame for discussions about food system reform. But water may prove to be an even more compelling catalyst for change.

Water scarcity is immediate and local. Cities can literally run out of water. Rivers can run dry. Aquifers can collapse. The consequences—food shortages, economic disruption, migration, and conflict—are tangible and politically urgent. Scientists warn that many of the world’s most drought-prone regions could face “day zero” water shortages within the next decade if current trends continue.

The emerging water crisis also presents an opportunity to reimagine how we feed the world.

Farmers in Türkiye’s Konya region are already experimenting with crops that require far less irrigation. Some are reviving traditional dry-farming techniques that rely on natural soil moisture rather than groundwater pumping. In India, communities are restoring ancient water infrastructure while investing in rainwater harvesting systems to replenish aquifers.

What we do in the next ten years is pivotal for global water governance. The United Nations is already preparing new global water conferences and policy frameworks to confront the realities of water scarcity and hydrological overshoot.

If those discussions are to succeed, they will need ideas capable of connecting fragmented policy debates into coherent solutions. Water conservation itself is one such bridge. Protein diversification should be another.

A world where humanity produces nutritious food while living within the ecological limits of the planet’s most precious resources is one where water conservation and agriculture work with, not against, each other. Because in a world already living beyond its hydrological means, the most sustainable food system will not be the one that produces the most meat.

It will be the one that nourishes the most people using the least water.