Fracking waste generated by Vaca Muerta in Neuquén province is accumulating because treatment capacity has fallen short of production volumes, according to a report published on 28 October 2026 by Buenos Aires Herald. The report said the province has five secure landfill sites and five treatment plants operating, while three additional plants have been or are involved in pollution-related legal disputes.
Key takeaways
- More than 97% of Neuquén’s oil and over 90% of its gas are extracted through fracking, according to the report published on 28 October 2026 by Buenos Aires Herald.
- Over 95% of fracking wastewater is disposed of underground in Argentina, compared with reuse for fracking and other industrial purposes in some North American countries, according to Buenos Aires Herald.
- Five secure landfill sites and five treatment plants are operating in Neuquén province, while three other treatment plants have been or are involved in pollution-related legal disputes, according to Buenos Aires Herald.
- No new landfills will be authorized, and companies will need to invest in alternative waste-treatment methods for environmental and logistical reasons, according to Buenos Aires Herald.
Treatment capacity lags behind waste generation
The report said Vaca Muerta is driving industrial growth in Neuquén, which produces more than 97% of the province’s oil and over 90% of its gas through fracking. Fracking injects water, sand and chemicals at high pressure to fracture rock and release hydrocarbons, according to the report published on 28 October 2026 by Buenos Aires Herald.
Contaminated water returns to the surface with naturally occurring brine and is injected into underground disposal wells. Over 95% is disposed of underground in Argentina, although some North American countries reuse up to 70% of this wastewater for fracking and other industrial purposes, according to Buenos Aires Herald.
Solid waste takes the form of a damp paste made from drilled rock, processed waste and sand. Subcontractors have accumulated this sludge in visible mountains over several years, sometimes close to residential areas. Provincial rules require approved treatment, including high-temperature furnaces intended to burn off toxic components and leave ash, but treatment capacity has consistently fallen short of production volumes, according to Buenos Aires Herald.
Landfill policy shifts toward alternative treatment
Neuquén currently has five secure landfill sites and five treatment plants operating. Three other treatment plants — E.ET., HP&V and Comarsa — have been or are involved in legal disputes related to pollution cases, according to the report published on 28 October 2026 by Buenos Aires Herald.
“Companies need to invest in alternative waste treatment methods, not only for environmental reasons, but also for logistical reasons,” said Leticia Esteves, Neuquén’s minister for tourism, environment and natural resources, according to Buenos Aires Herald. She said existing sites are safe and properly licensed but acknowledged that they are “sacrifice zones” that cannot be used for anything else.
The report also said international investors have a significant stake in the Vaca Muerta boom, with Chinese companies investing roughly USD 6 billion in Argentina’s fossil-fuel sector, including Vaca Muerta. That investment signals the scale of the waste-management challenge facing the province, according to Buenos Aires Herald.
Specification read
The plant scale was not reported. The available figures describe shale production, the share of wastewater disposed of underground, and the number of operating treatment and landfill sites rather than treatment-plant design flow, so the wastewater load cannot be converted reliably into m³/day or population-equivalent units. Buenos Aires Herald reported that more than 97% of the province’s oil and over 90% of its gas are extracted through fracking, while over 95% of the resulting wastewater is disposed of underground.
For an oil and gas wastewater treatment plant, the relevant treatment train normally moves from screening and equalization to primary separation, biological treatment and tertiary or disinfection stages, with DAF flotation systems applicable where oil, solids and sludge separation are required. This event bears directly on wastewater handling, solids processing and the capacity to treat accumulated sludge rather than only on routine oil-water separation. Existing facilities are a useful reference for scoping DAF versus clarifier performance for petroleum wastewater.
If your plant looks like a fracking-waste facility with a high wastewater disposal load, growing sludge inventories, landfill dependence and a need for alternative treatment, this means treatment capacity, solids handling and environmental compliance should be evaluated together before equipment is selected. A complete site-specific design would also require flow, contaminant loads, waste characteristics and operating targets that the report does not provide.
FAQ
What treatment capacity is needed for Vaca Muerta wastewater?
The report does not give plant design flow, contaminant concentrations or population-equivalent loading, so a defensible m³/day capacity cannot be calculated. It reports that over 95% of fracking wastewater is disposed of underground in Argentina and that five treatment plants are operating in Neuquén; project-specific mass balances are therefore required before sizing equipment (Buenos Aires Herald).
What are the main treatment stages for this waste stream?
A plant may need screening and equalization, primary oil-and-solids separation, biological treatment, and tertiary or disinfection, with DAF relevant to oil and solids recovery and zero-liquid-discharge systems considered where reuse or stricter discharge limits apply. The report’s shortfall concerns treatment capacity and accumulated sludge, but it does not specify the required treatment train for a new facility (Buenos Aires Herald).
How long would it take to deliver an alternative treatment plant?
The source does not report a delivery period. Any procurement schedule would need to account for the time required to define the waste profile, obtain approvals, select equipment and validate a treatment process; the report provides no basis for estimating those durations (Buenos Aires Herald).
What should buyers evaluate when selecting treatment equipment?
Buyers should first document wastewater flow, contaminant loads, sludge characteristics, disposal routes and compliance requirements, then compare process fit, throughput and solids handling. The source identifies capacity shortfalls and the need for alternative waste-treatment methods, but does not provide costs, lead times or supplier-selection criteria (Buenos Aires Herald).
