Federal contractors building sections of President Donald Trump’s border wall in New Mexico have been ordered to stop drilling new water wells after local ranchers warned that large-scale groundwater pumping could threaten livestock operations already struggling through severe drought.
U.S. Customs and Border Protection confirmed Monday that contractors had been instructed to halt additional drilling while federal and state officials examine how construction can continue without damaging nearby water supplies.
The agency said it would work with New Mexico officials, the U.S. Department of Agriculture and local landowners to develop a more sustainable groundwater strategy. CBP did not immediately clarify whether contractors would still be permitted to pump water from wells that have already been drilled.
Water is needed for several parts of border-barrier construction, including mixing concrete, building access roads and controlling dust around work sites. The concern in southern New Mexico is that industrial wells may withdraw water at rates far exceeding those of the smaller wells used by nearby cattle operations.
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Rancher Russell Johnson said workers told him that a well constructed on land he leases could pump approximately 300 gallons per minute. By comparison, Johnson said the roughly 12 wells supporting his ranch generally produce between three and seven gallons per minute.
Johnson warned that significant changes in the shared aquifer could force ranchers to reduce their herds further or potentially leave the cattle business entirely. He already has cut his herd to about one-third of its previous size, largely because drought has reduced available grass and water.
The New Mexico Office of the State Engineer said its staff had identified eight wells drilled along the southern border without approval from the state agency, while cautioning that the actual number could be higher. Inspectors who visited two wells in July reported pumping rates of approximately 200 gallons per minute.
State officials maintain that non-tribal wells require permits regardless of whether they are located on state, private or federal land. The Office of the State Engineer regulates well construction and groundwater use across New Mexico and states that anyone seeking to use water must obtain authorization.
The federal government has previously argued that it is not bound by the state permitting requirement for the border project. That position creates a larger legal question over whether federal construction authority can override New Mexico’s system for managing limited groundwater resources. No court has yet resolved that dispute in connection with these wells.
The wells are located on the Roosevelt Reservation, a federally controlled strip of land running along the U.S.-Mexico border. Contractors including Caddell Construction, Fisher Industries, Barnard Construction and Spencer Construction have been involved in wall projects in the state. The companies did not immediately provide public responses to questions about the drilling suspension.
The controversy comes as the Trump administration accelerates barrier construction across the southern border. More than $46 billion in federal funding has been directed toward projects spanning New Mexico, Texas, Arizona and California.
Support for stronger border security remains widespread among many residents in the affected region. Johnson, a former Border Patrol agent, said the existing barrier had significantly reduced unlawful crossings near his property.
His objection is not necessarily to the wall itself, but to the possibility that its construction could damage the groundwater on which local families and ranching businesses depend.
That distinction makes the dispute more complicated than a conventional political fight over immigration. Federal officials are pursuing a national security priority, while residents who may support that goal are asking the government to follow water rules intended to protect their livelihoods.
New Mexico is one of the driest states in the country, and state planning officials warn that drought and climate pressures could make it approximately 25% drier over the next 50 years. Groundwater therefore cannot always be quickly replaced after heavy pumping, particularly in basins experiencing prolonged shortages.
The drilling pause does not establish that the construction wells have already caused nearby ranch wells to decline. Determining that would require information about aquifer boundaries, pumping duration, water levels and the distance between the industrial and agricultural wells.
However, the lack of permits and monitoring makes it more difficult for officials and residents to measure the potential effect before damage occurs. Once a shallow ranch well begins failing, emergency solutions such as hauling water, drilling deeper or selling livestock can become extremely expensive.
Why It Matters
The dispute shows how a major federal infrastructure project can create unexpected costs for communities located beside it.
For ranchers, groundwater supports livestock, property values and family income. If construction pumping lowers local water levels, taxpayers could also face additional costs for emergency assistance, deeper wells or legal disputes over responsibility.
The issue additionally tests whether federal agencies must comply with state water-management systems when carrying out presidential border policies.
What Comes Next
CBP is expected to negotiate with state officials, agricultural agencies and landowners over alternative sources of construction water. Contractors could purchase water from existing permitted suppliers, as some reportedly did during earlier border-wall projects, rather than drilling additional industrial wells.
Officials must also decide whether the eight existing wells can be used, monitored, permitted retroactively or permanently closed.
Residents will likely seek pumping records and groundwater measurements before accepting any plan that allows the existing wells to operate. Further disputes could lead to administrative enforcement or litigation over state authority on federally controlled land.
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