The ratio decides the truck count
B3 Insight's 2H 2025 basin data puts Permian oil production at roughly 5.7 million barrels a day and produced water at about 20.7 million barrels a day. That is close to four barrels of water for every barrel of oil, and the ratio climbs as wells age. The Texas A&M Texas Produced Water Consortium and TRERC report operators in the basin handling more than 22 million barrels of water a day, with volumes projected to grow another 39 percent by 2035.
The truck is the marginal cost
A typical vacuum truck hauls around 120 barrels a load. A location producing 1,000 barrels of oil a day at a five-to-one water cut needs more than 40 loads of water moved every day, plus the associated frac water coming in. Where pipelines or gathering systems do not reach, B3 Insight puts trucking costs as high as $2.50 a barrel. At that rate a single high-water location can burn through five figures a day in hauling before a barrel of oil is sold.
The leak is in the unmeasured time
Disposal costs run from about $0.25 to $1.00 a barrel depending on the basin and the well, and recycling for frac reuse runs lower still, which is why operators push water to reuse. But the trucking cost is decided in the field: wait time at the disposal well, standby between loads, empty miles, and tickets written from memory instead of the meter. Those are dispatch problems. Water hauling fleets that run on phone calls and paper tickets lose the most on detention that nobody bills and miles that nobody planned.
Water management spend across the Permian is already a structural cost line, estimated at roughly $2.7 billion in 2026 and rising toward $3.2 billion by 2036. For a hauling contractor, that is the market. For an operator, it is the reason the custody transfer and last-mile delivery disciplines matter. The operation that measures every load, dispatches every truck, and invoices from field evidence keeps the water cost from becoming the oil cost. If that record is still kept on paper, an operations audit will show where the hauling margin is going.