Produced Water Disposal and Compliance in Texas: An Operator's Guide

Produced water is the largest waste stream in oil and gas. A Texas well can bring several barrels of water to the surface for every barrel of oil, and that ratio only grows as a field matures. Managing that water, and proving you manage it in compliance with state and federal rules, is one of the most persistent operational obligations an operator carries. This guide explains how produced water is regulated in Texas, the disposal and reuse options available, and the recordkeeping that keeps you compliant.

What Produced Water Is

Produced water is the water that returns to the surface with oil and gas. It includes formation water native to the reservoir and injected fluids that flow back. It is typically saline, may carry residual hydrocarbons, dissolved solids, and naturally occurring radioactive material (NORM), and its volume increases over the life of a field.

Who Regulates Produced Water in Texas

In Texas, produced water from exploration and production is regulated primarily by the Railroad Commission of Texas (RRC), not TCEQ. Oil and gas E&P wastes, including produced water, are exempt from federal RCRA Subtitle C hazardous waste regulation under the long-standing E&P exemption. That exemption does not make produced water unregulated. It means the RRC, rather than the hazardous waste program, sets the rules for how it is handled, disposed of, and reported.

Three Statewide Rules form the core framework:

• Statewide Rule 8 (16 TAC 3.8), Water Protection, governs the handling and disposal of oil and gas wastes and prohibits pollution of surface and subsurface water.
• Statewide Rule 9 (3.9) authorizes disposal wells that inject waste into formations not productive of oil or gas.
• Statewide Rule 46 (3.46) governs injection of fluid into reservoirs that are productive of oil or gas, including enhanced recovery.

How Produced Water Is Managed and Disposed Of

Texas operators have several compliant pathways:

Injection into Class II disposal wells. This is the most common method. Produced water is injected into a permitted saltwater disposal (SWD) well. Texas holds primacy over Class II injection wells under the federal Underground Injection Control (UIC) program, so the RRC issues and enforces these permits.

Injection for enhanced recovery. Produced water is reinjected into a producing reservoir to maintain pressure and drive additional production, permitted under Statewide Rule 46.

Recycling and reuse. Treating and reusing produced water, most often for hydraulic fracturing, has grown quickly. The RRC has updated its rules to encourage recycling and to clarify when a permit is required. Reuse lowers both disposal volumes and freshwater demand.

Surface discharge. Direct discharge of produced water to surface water is generally prohibited. Narrow exceptions exist under federal Clean Water Act NPDES permits for certain low-volume onshore operations west of the 98th meridian used for agricultural or wildlife purposes, but these do not apply to most operators.

Permitting a Disposal or Injection Well

A disposal or injection well requires an RRC permit before any fluid is injected. The application must demonstrate that the injection zone is isolated from usable-quality groundwater, that the well is mechanically sound, and that injection will not endanger other resources. Permits carry conditions on injection volumes and pressures, and operators must maintain mechanical integrity through periodic testing.

Recordkeeping and Reporting

Compliance is proven through records. Operators are responsible for:

• Annual injection and disposal well reporting to the RRC, documenting volumes and pressures for each permitted well.
• Manifesting and tracking of produced water hauled off-site to a commercial disposal facility, so the chain of custody is documented from generation to disposal.
• Mechanical integrity test records confirming the well is not leaking.
• Spill reporting under Statewide Rule 91. A release of 100 barrels or more of produced water onto the ground, or any volume that reaches a watercourse, must be reported, with verbal notice to the district office and a written Form H-8 report following.

Induced Seismicity

In parts of Texas, particularly the Permian Basin, high-volume disposal injection has been associated with induced seismicity. The RRC monitors seismic activity and can impose conditions, reduce permitted volumes, or suspend injection in designated seismic response areas. Operators disposing in these areas should expect additional permit scrutiny and ongoing monitoring obligations.

Common Compliance Pitfalls

• Injecting above permitted volumes or pressures.
• Missing or incomplete annual well reports.
• Failing to report a produced water spill within the required timeframe.
• Inadequate manifesting of hauled water.
• Overlooking seismicity conditions in the Permian and other monitored areas.

Each of these is independently citable, and produced water handling is a routine focus of RRC field inspections.

How Tektite Helps

Tektite supports Texas operators across the full produced water compliance picture, from RRC compliance audits of disposal and injection operations to oilfield waste management and spill response. If you are unsure whether your disposal wells, reporting, or seismicity obligations are current, a focused review will show you where you stand before an inspector does.