There was another spill in North Dakota last week as 20 barrels of oil and 246 barrels of saltwater leaked at a well site near Parshall, ND.
The spill ended up reported Wednesday by Houston-based EOG Resources, which owns the well, officials said.
The oil and saltwater ended up contained and recovered at the site, about four miles southwest of Parshall, EOG officials said. The company said the spill was the result of a tank overflow.
Regulators said an inspector is at the scene conducting an investigation.
With the ongoing fracking environment moving forward, North Dakota has become a hotbed of oil and saltwater spills.
In May, there was a water leak in North Dakota as a pipeline spill caused about 220,000 gallons of produced water to leak in a field near Mandaree on the Fort Berthold Indian Reservation, tribal authorities said.
The spilled brine has not had any direct impacts on major water sources, and the closest water source is an intermittent stream more than 400 yards away.
The week before that spill, there was a 63,000-gallon saltwater leak from an underground pipeline that entered a lake via a tributary in northwest North Dakota, state officials said.