WILLISTON About 2.9 million gallons of produced water and an unknown amount of oil was released from a salt water collection line about 15 miles north of Williston, according to new information the North Dakota Department of Health has received.

Health Department officials said they received more information about the incident from Summit Midstream late Tuesday. The incident was reported Jan. 7.

The spill has impacted nearby waters in Blacktail Creek downstream from Blacktail Lake and the brine has also impacted the Little Muddy Creek, according to a news release from the Health Department.

The spill does not present a threat to public drinking water or human health at this time, Health Department officials said.

The responsible party has hired an environmental contractor to help with clean up measures, as well as long-term remediation. Since remediation efforts began about 2.6 million gallons of water have been extracted from Blacktail Creek.

The Health Department has been on site since the initial report and continues to monitor the impacted area and the clean-up efforts. The North Dakota Oil and Gas Division is also on site to evaluate the pipeline network operations going forward.