BISMARCK, N.D. (AP) North Dakota health officials are on the scene of a saltwater spill in Williams County of more than 100,000 gallons.
The Health Department says it was reported 9 miles southwest of Tioga by Hess Bakken Investments II LLC.
The state says 2,500 barrels of source water was released from a pipeline and impacted a nearby stock dam.
The water used for recovering oil is higher in dissolved solids and minerals than fresh water.