Pilot was proposing to inject up to 24,900 barrels of produced water per day, per well, within 1,000 feet of Midland’s water wells, according to the city.
Liveable Arlington and two residents living near a gas drilling site filed suit against the city this week.
The Port of Brownsville was the last major deepwater port of Texas still undeveloped by large fossil fuel projects.
The EPA Region 6 administrator recently toured Arlington fracking sites with Ranjana Bhandari of Liveable Arlington.
The city approved 11 new gas wells next to a residential neighborhood in southwest Arlington last week.
Biden issued the order on Inaugeration Day as part of his efforts to fight climate change.
Environmentalists - and some scientists - warn it could be risky.
Liveable Arlington alerted the city's gas well inspector to a violation at the site.
A new study by the University of Texas at Austin documented 7,000 earthquakes near Pecos since 2009.
EPA admits the rule reversal will increase greenhouse gas pollution.