On Oct. 2, 2024, a geyser erupted in Toyah, a town in west Texas 50 miles from the New Mexico border. This was not a case of water miraculously appearing in the desert, a deliverance from the area’s long-standing drought. Rather, it was an environmental disaster: a blowout from an orphaned oil and gas well.

What gushed from the ground wasn’t actually water, but rather a vile brine of heavy metals, radioactive substances, chemical additives and noxious organics — the by-product of fracking. 

The Toyah incident is the latest of at least eight leaks over the preceding 12 months in the Permian Basin, a fracking hub across west Texas and southeastern New Mexico. It highlights the increasingly urgent challenge of what to do with fracking’s wastewater — what fossil fuel companies euphemistically call “produced water.” But some New Mexico legislators have a solution in mind: For the last few years, they’ve proposed reusing the wastewater off the oil field for industrial purposes, such as data center cooling and hydrogen production.

Part of their argument is that New Mexico desperately needs water. More than 90% of its residents live in areas facing drought. In the next 50 years, the already-arid state will see its ground- and fresh water sources shrink by 25%.

Political pressure is mounting on New Mexico’s lawmakers to tap into fracking wastewater as a new resource. Environmental groups, however, strongly oppose the idea, arguing that there is still no way to make the wastewater safe for off-field use. Year after year, the New Mexico Legislature finds itself at a crossroads.

“We are, as a state, very beholden to oil and gas,” said Carlos Matutes, the New Mexico director at the advocacy group GreenLatinos that’s part of the coalition opposing produced water reuse. Any bill that sanctions produced water, he said, “is almost guaranteed to come back.”

“We are, as a state, very beholden to oil and gas.”

PRODUCED WATER is an existential dilemma for the oil and gas industry. Fracking involves blasting underground rock with water to free up trapped oil and gas, but when that water returns to the surface, it is laden with contaminants it picks up from the earth. Every barrel of hydrocarbons reaped also generates up to 10 barrels of contaminated water. In 2021 alone, New Mexico was spewing 147 million gallons of toxic wastewater daily.

Drilling companies usually dispose of wastewater in dedicated injection wells. Water, however, does what water always does: It flows where it wishes, heedless of human-drawn boundaries. And it can travel for miles underground, then burst forth from improperly sealed oil wells, as it did with Toyah. (So far, no company has claimed ownership of the well, though its use dates back to 1961.) Even wastewater that stays underground finds ways to revolt — by triggering earthquakes. As fracking operations have ramped up over the last decade, so too has the tally of tremors. In the past year alone, New Mexico experienced over 2,500 quakes, most of them concentrated in the southeastern corner of the state, where fracking is most flagrant. In comparison, only 45 tremors rumbled the state in 2017.

Currently, most of New Mexico’s produced water is either injected underground or transported across state lines for disposal elsewhere. By contrast, neighboring Texas permits repurposing treated wastewater for other uses or discharging it into the environment.

A warning label on the side of a tank holding oilfield wastewater near Crossroads, New Mexico. The water includes heavy metals, radioactive substances, chemical additives and noxious organics. Credit: Charlie Riedel/AP Photo

In late 2023, New Mexico Gov. Michelle Lujan Grisham floated a strategic water supply proposal to follow in the footsteps of its neighbor. Initially, she proposed investing $500 million of state funds in treating produced water. But that measure dried up in legislative budget negotiations. In subsequent revisions, Lujan Grisham has watered down the funding allocation, from $250 million in 2024 to $75 million in 2025. Each time, pushback from environmental groups helped flush produced water treatment from the proposals altogether.

Even if the plan had sailed through, though, it would not have recouped a significant amount of water, said Rachel Conn, the deputy director of the water conservation organization Amigos Bravos. Removing contaminants from fracking wastewater requires copious energy to boil off and squeeze fresh water from dissolved toxins. Her team estimates that it costs at least $2 to treat a barrel, twice as much as it costs to send it down an injection well. The total amount could easily top $1 billion a year. (In Texas, oil companies pay more, as much as $10 per barrel for treatment.) Given the high costs, Conn said that the amount of water the strategic water supply could afford to treat would meet no more than 1% of New Mexico’s water needs — a literal drop in the bucket.

Additionally, environmental organizations like Amigos Bravos have raised concerns about the safety of fracking wastewater, whether it’s treated or untreated. Radioactivity levels around several injection wells in Ohio and West Virginia exceed the federal safety limit by several hundred-fold; and in one Pennsylvanian river, radium still persists among mussels even five years after the last discharge of produced water.

The complex cocktail of chemicals found in produced water makes it hard to characterize, said Bonnie McDevitt, a research physical scientist at the U.S. Geological Survey. Companies usually guard the chemical additives in their fracking fluid as a trade secret. Toxicity requirements cannot cover every contaminant present, essentially leaving some questionable compounds completely unregulated. That means that even if the treated wastewater technically meets drinking water standards, it may not necessarily be safe to drink. Environmental advocates are calling for testing limits on 600 compounds potentially found in fracking wastewater before it can be used off fracking fields.

But the fossil fuel industry insists that the treatment technology is ready; Ryan Hall, the director of technical operations at NGL Energy Partners, said, “We can treat to any spec.” As one of the nation’s largest handlers of the industry’s wastewater, his company manages 2.5 million barrels from the Permian Basin, mainly by disposing of it in injection wells. NGL Energy has also explored wastewater treatment in some states, and Hall said it is eager to start in New Mexico once authorities give the legislative greenlight.

The New Mexico Produced Water Research Consortium, which is partially funded by oil and gas companies, is currently leading the effort to develop purportedly safe and affordable treatment methods. The institute’s recent projects include advancing various separation technologies and studying the health impacts of produced water on indicator species, like aquatic microbes and plants. “I’m with the environmental groups,” said Pei Xu, the institute’s research director and an environmental engineer at New Mexico State University. “We also want this water to be very safe. I think we have made a lot of very good progress.”

THE BATTLE BETWEEN industry and environmental groups is heating up. In April, New Mexico’s Water Quality Control Commission announced that it would allow pilot treatment projects to discharge up to 84,000 gallons of wastewater into groundwater daily. Environmental groups filed court briefs and staged a protest outside the Capitol, and 27 state legislators wrote a letter to the commission urging it to reconsider. In a follow-up hearing on May 13, the commission rescinded its April decision and reinstituted the ban.

What environmental groups want, ideally, is to end fracking altogether. But that’s unlikely to happen anytime soon: New Mexico is economically dependent on oil and gas, ranking second in the nation’s top fossil fuel-producing states. Industry has a solid grip on politics here — roughly 60% of Lujan Grisham’s 2017-2022 campaign contributions came from the state’s largest oil corporations.

“It should be the industry’s responsibility to clean up that produced water.”

At the very least, environmental groups say, taxpayer dollars shouldn’t be used to solve a problem of the industry’s own making. “It should be the industry’s responsibility to clean up that produced water,” Conn said. Her suggestion: Reuse the wastewater for future fracking. About 60% of wastewater is recycled on oil fields; Conn says bumping the rate to 90% could save 4 billion gallons of fresh water — more than all the produced water that the strategic water supply proposal would treat.

Meanwhile, drilling shows no signs of slowing down. Across the Permian playa, pumpjacks rise like giant birds pecking at the ground. Strewn alongside these steel flocks are miles-deep injection wells, each designated by a comparatively squat wellhead that often comes in the shape of a cross — a headstone for an otherwise unmarked grave for the vast refuse that refuses to go quietly.

Environmental groups protest outside New Mexico’s Capitol after the state announced it would allow pilot treatment projects to discharge up to 84,000 gallons of wastewater into groundwater daily. Credit: Courtesy of New Energy Economy

Note: This story was updated to correct the spelling of Bonnie McDevitt’s name.

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Shi En Kim is an editorial fellow at HCN covering science, environment and society. Feel free to email her at shien.kim@hcn.org to speak with her about these topics and more or submit a letter to the editor. You can follow her work on Twitter at @goes_by_kim.