The forces at work

Water issues, explained

The pressures driving America's turn to water recycling — from a shrinking Colorado River to forever chemicals in the tap. Each explainer is built to be the clearest answer on the topic.

Potable Reuse

Advanced purification turns treated wastewater into water that meets or exceeds drinking-water standards — increasingly essential in water-stressed regions.

Drought

Much of the American West is in a multi-decade dry period that researchers describe as the most severe in over a millennium, reshaping how communities plan for water.

Colorado River

The river that supplies 40 million people has lost roughly a fifth of its flow since 2000, forcing a renegotiation of how seven states share the water.

Groundwater Depletion

Aquifers from the Central Valley to the Ogallala are being pumped faster than they recharge, causing land subsidence and threatening long-term supply.

PFAS Contamination

Per- and polyfluoroalkyl substances persist in water supplies for decades. New federal limits are forcing utilities nationwide to invest in advanced treatment.

Aging Infrastructure

Much of America's water infrastructure is decades past its design life, leaking trillions of gallons a year and demanding hundreds of billions in reinvestment.

Agricultural Demand

Agriculture accounts for the majority of consumptive water use in the West, making farm efficiency and water markets central to any supply solution.

Saltwater Intrusion

As coastal aquifers are over-pumped and seas rise, saltwater pushes inland and contaminates freshwater supplies for cities from Florida to California.

Stormwater Capture

Cities are reengineering streets and parks to capture rain that once ran to the sea, recharging aquifers and reducing flooding at the same time.

Desalination

Desalination offers a drought-proof supply but at high energy cost and with brine-disposal challenges — a complement to, not a replacement for, reuse.

Lead Contamination

Millions of lead service lines still connect homes to water mains. After Flint, a national push — backed by new EPA rules — aims to rip them all out.

Water Affordability

As utilities raise rates to fund overdue upgrades, water bills are outpacing incomes — and shutoffs are hitting the most vulnerable households hardest.

Water Rights

In the West, water is governed by 'first in time, first in right' — a century-old legal system now colliding with scarcity, cities, and the environment.

Snowpack Decline

Mountain snow is the West's largest reservoir. As warming shifts snow to rain and melts it earlier, the timing and reliability of water supply are unraveling.

Algal Blooms

Nutrient pollution and warming water are fueling toxic algae outbreaks that can shut down drinking-water intakes — as Toledo learned in 2014.

Microplastics

Tiny plastic particles are turning up in tap and bottled water worldwide. Science on health effects is young, but regulators are starting to act.

Produced Water

Oil and gas wells generate billions of barrels of salty, contaminated water. Arid states are debating whether to treat and reuse it — and how safely.

Flood Management

Climate change is intensifying both droughts and floods. The frontier is managing them together — capturing floodwater to recharge depleted aquifers.

Tribal Water Rights

Native nations hold some of the oldest and largest water rights in the West — often unquantified for a century. Settlements are now reshaping basin allocations.

Water Conservation

The cheapest gallon is the one you never use. Conservation — from low-flow fixtures to turf rebates and smart metering — is the first line of defense.

Biosolids

Treating wastewater produces nutrient-rich solids long spread on farmland. PFAS contamination is now forcing a rethink of that practice.

Data Centers & Water

The rush to build AI and cloud-computing infrastructure is driving large new water demand — both for cooling the servers and for generating the electricity that powers them — often in drought-stressed, groundwater-dependent regions.