Silent Threat: America’s Abandoned Oil Wells and the Danger Beneath

Abandoned oil and gas wells across the U.S. pose significant environmental, health, and safety risks, with many leaking hazardous gases and chemicals, highlighting regulatory failures and the immense financial burden of remediation.

2 minute read

December 23, 2024, 7:00 AM PST

By Clement Lau


Abandoned oil and gas wells, known as “zombie wells,” pose significant environmental and safety risks across the United States. An estimated 3.5 million wells are scattered nationwide, with many leaking hazardous substances such as methane, benzene, and hydrogen sulfide. Communities near these wells face threats ranging from water contamination to catastrophic explosions. In West Texas, rancher Laura Briggs’ property is marred by leaking orphan wells, highlighting regulatory failures and the immense challenges of managing abandoned sites.

An ABC News investigation tested 76 abandoned wells across five states, discovering leaks in 40 of them. Leaking wells were found in a variety of locations, from Kansas farms to Los Angeles hiking trails, emitting combustible gases and toxic chemicals. Offshore, seven out of ten wells tested near Houston were leaking. The findings underscore the scope of the problem, with abandoned wells emitting potent greenhouse gases and carcinogens that threaten public health and accelerate climate change.

The cost of plugging orphan wells is staggering, with estimates exceeding $250 billion nationwide. States like Texas face mounting pressure to address the issue, yet available funds cover only a fraction of the need. Current bonding requirements for oil companies often fall short, leaving taxpayers to foot the bill. Attempts to reform regulations face resistance from industry groups, perpetuating a cycle where neglected wells remain unaddressed, endangering both communities and ecosystems.

Thousands of abandoned wells lie buried beneath U.S. cities, including Los Angeles, where methane vents disguised as fence posts reveal the hidden danger. Residents of neighborhoods like Vista Hermosa face elevated health risks, with illnesses linked to long-term exposure to leaking wells. Along hiking trails in El Escorpion Park, leaking wells continue to emit dangerous levels of gas. Regulatory agencies acknowledge the risks and promise action, but progress remains slow, leaving residents and the environment vulnerable.

Thursday, December 19, 2024 in ABC News

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

47 minutes ago - Zachary Whalen

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

NYC Mayor Zohran Mandami speaks behind a blue podium.

Mamdani overhauls NYC's Vision Zero plan with 100 new policy goals

The overhaul aims to reduce traffic deaths and make streets safer for pedestrians, cyclists and drivers through lower speed limits, new safety infrastructure and more.

45 minutes ago - ABC 7 Eyewitness News

A New Jersey train approaches people waiting at the station.

Amtrak not solely to blame for New Jersey commuter rail's unreliability, report finds

A new study from the Garden State Initiative found that NJ Transit’s budget grew 20% across a 4 year period, but reliability declined significantly over the same period.

September 15 - Mass Transit

A tall, gray power plant billows smoke into a blue sky.

EPA erases limits on planet-warming pollution from power plants

Under Monday’s plan, power plants would still have some limits on how much mercury, arsenic and other contaminants they can emit.

September 15 - New York Times

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.