Oklahoma’s oil and gas watchdogs quietly built a secret internal database that spotlighted hundreds of risky injection wells, then mostly let it sit on the shelf while wastewater blowouts piled up across the countryside.
The project, nicknamed the “Source of Truth” inside the agency, uncovered thousands of problems in state records and flagged a large cluster of oilfield wastewater injection wells that were operating outside modern limits. Some were injecting above their permitted pressures, others had no pressure or volume limits on file at all. In the years since the work wrapped, reports of oilfield “purges” — salty, contaminated wastewater erupting at the surface — have spread across rural Oklahoma.
The database itself only surfaced after public-records requests and reporting turned it up in agency files. The findings were first detailed in coverage co-published by The Frontier. Staff told reporters the project was completed in 2021 but never widely shared across the Oklahoma Corporation Commission, which meant many employees never got a centralized list of the highest-risk wells.
How underground injection is supposed to work
Oilfield wastewater injection falls under the Safe Drinking Water Act through the EPA’s Underground Injection Control program, and states that secure “primacy” run Class II wells themselves. According to the EPA, permits typically cap pressure and volume so injected fluids do not fracture surrounding rock or move into aquifers used for drinking water. Those limits are the basic tools regulators are expected to use to guard against contamination and other harms such as induced earthquakes.
What the Source of Truth showed
Reporting on the internal database found that it identified more than 1,300 errors in the commission’s own records and flagged nearly 600 injection wells that were operating above their permitted pressure or volume. It also spotlighted more than 1,400 older injection wells that lacked any pressure or volume limits. State data showed about 88% of those wells were listed as active and together injected more than 100 million gallons of wastewater last year. Agency employees told reporters those gaps made it impossible to quickly tell which wells were most dangerous without painstaking, file-by-file reviews.
Purges, property damage and matches
An analysis of complaints and internal logs by reporters at The Frontier and ProPublica charted a steep jump in so-called purges. Roughly a dozen documented blowouts in 2020 grew to more than 150 over the following five years, and reporters found at least 30 cases in which a well flagged by the Source of Truth later lined up with a location near a purge.
Across several counties, residents described polluted household wells, ruined pastureland and long, grinding cleanup efforts after oily, salty wastewater turned up where it never should have been. Some farmers and ranchers reported that the mess delayed normal work on their properties for extended stretches.
Why regulators did not act
Current and former employees of the Oklahoma Corporation Commission told reporters the Source of Truth effectively handed regulators a ready-made playbook for prioritizing inspections and updating permits. Even so, the commission did not require operators to comply with modern limits or impose new caps on the older wells the database highlighted.
The commission’s communications office told reporters the agency “looked into using the Source of Truth database and elected not to use this form of data collection,” and, according to ProPublica, did not explain why it declined to mandate fixes. Staff warnings that the database would have helped field teams respond more strategically to purges went nowhere, employees said.
Legal and federal options
In theory, federal officials can step in, although such moves are rare. When state-run programs have shown systemic weaknesses before, federal reviews and audits have occasionally forced reforms. One high-profile example came in California, where a peer review and federal scrutiny led to changes in the state’s Class II injection program, according to GWPC.
EPA officials have told reporters that in states with long histories of oil production, many older wells may fall short of modern standards unless regulators formally reevaluate them and add limits. That leaves the burden on state agencies to act unless federal officials find a specific threat to drinking water that forces their hand.
What residents should watch for
For ranchers and homeowners already worried about what is coming out of the tap, the advice from experts in the reporting is straightforward. Keep records of any changes in water quality, get private wells tested, and file complaints with the Oklahoma Corporation Commission’s Oil and Gas Conservation Division.
The investigation suggests the Source of Truth gives the commission a concrete roadmap for setting limits, targeting inspections and cutting the odds that wastewater will erupt at the surface or creep into groundwater. Whether regulators choose to follow it is another question.
