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Growing U.S. military Footprint In Guam Intensifies Concerns Over Environmental Damage And Sovereignty

SCHEERPOST,August 15, 2026, Gaea Cabico Prism

In Yigo, the northernmost village in Guam, there is a well that cannot be shut down. 

Known as Y-15, the well sits atop the island’s northern aquifer, which supplies around 80% of the island’s drinking water. Even if contaminants are detected, Y-15 has to keep pumping. There is simply no alternative. 

The well also sits just below a hill near Upi Elementary School—attended by around 400 children—and just outside the back gates of Andersen Air Force Base, which hangs over the community like a permanent shadow. Generations of Indigenous CHamoru families have called Yigo home, relying on these waters for drinking, cooking, and other daily activities.

But in September 2025, one such family learned that the well supplying their home of 17 years was contaminated with high levels of dieldrin, a pesticide once widely used on crops and for termite control beginning in the 1950s. The Environmental Protection Agency (EPA), which classifies dieldrin as a probable human carcinogen, banned all uses of the pesticide in 1987 over concerns about its damage to the environment and links to serious health effects, including cancer, Parkinson’s disease, and reproductive issues such as decreased fertility and increased numbers of stillbirths. Because dieldrin accumulates in the body, long-term exposure—even in small amounts—can cause serious harm, according to the EPA. 

More than 1,200 residents of Yigo were told not to drink water from Y-15 because of dieldrin contamination……………………………………..

Dieldrin is just one piece of a much larger and troubling environmental legacy in Guam. 

Per- and polyfluoroalkyl substances (PFAS)—better known as “forever chemicals”—have also been detected across the island’s water systems. These compounds can persist in soil and groundwater for decades, and they have been linked to a range of health effects, including cancer, immune and thyroid dysfunction, liver and kidney disease, and serious reproductive issues. 

For Monaeka Flores, an advocate with the grassroots environmental organization Prutehi Guåhan, the island’s environmental problems are inseparable from the military buildup that has reshaped the island. From hazardous waste dumping, base construction, and open-air detonations of munitions to live-fire exercises in sensitive habitats, advocates say that Guam’s land and water bear the toxic legacy of the U.S. military………………………………………………………………………………………………………………………………………………………………………………

The long arc of colonization

While Guam is only 30 miles long and nine miles wide, the U.S. Defense Department controls roughly a quarter of its land—and military expansion is accelerating. Much of the military buildup on the island is justified on the grounds of national security as the U.S. seeks to strengthen its position in the Pacific amid tensions with China and North Korea. 

A missile defense system designed to protect the territory from potential outside threats, live-firing range complex, and new Marine Corps base are currently in the works. The buildup could also expose more people to potential environmental contamination. Roughly 10,000 active-duty personnel, their dependents, and government civilians are expected to arrive by 2036.  ………………………………………………………….

What is unfolding in Guam is not happening in isolation. 

From Okinawa, Japan to the Marshall Islands and the Diego Garcia military base in the Chagos Archipelago, communities living near U.S. military bases have documented patterns of environmental harm, including contamination linked to toxic chemicals and hazardous waste. 

There is “very significant environmental damage” due to leaks and the military’s accidental—or sometimes intentional—dumping of hazardous, toxic materials, said David Vine, a political anthropologist and author of “Base Nation: How U.S. Military Bases Abroad Harm America and the World.” “It’s a clear pattern across the network of bases in the Pacific and around the world, including the 50 states,” he told Prism 

Guam’s many environmental problems are concentrated around military bases, the island’s airport, and sites where firefighting occurred. As just one example: A major source of PFAS contamination on the island is the powerful fire suppressant known as Aqueous Film Forming Foam, which is used to extinguish jet fuel fires……………………………………………………………………………………………………

Activists, community leaders, and CHamoru families increasingly frame their struggle against the military’s pollution and contamination not only as an effort to protect fragile ecosystems, but also as a broader fight for demilitarization and decolonization. They are demanding both the removal of militarized infrastructure and the restoration of sovereignty over their ancestral lands………………………………………………………………………………………………………………….. https://scheerpost.com/2026/08/15/growing-u-s-military-footprint-in-guam-intensifies-concerns-over-environmental-damage-and-sovereignty/

August 17, 2026 - Posted by Christina Macpherson | environment, OCEANIA, USA, weapons and war