MEDFORD City officials are investigating a spill that sent close to 1,000 gallons of oil into the wastewater treatment facility Tuesday afternoon.

Staff at the Regional Water Reclamation Facility on Kirtland Road became aware of a heavy petroleum-based oil that entered the plant just after noon. The flow continued to enter the sewage plant until about 6 p.m., according to city officials.

Workers were able to divert the contaminated flow, officials said, adding none of the oil continued through the treatment process and there was no loss of effluent quality as a result of the spill.

Medford city staff with the assistance of Rogue Valley Sewer Services workers are trying to determine the source of the oil spill. Preliminary reports suggest it might have originated from the general Central Point, west Medford or Jacksonville area.

Samples of the pollutant were sent to a laboratory for analysis to determine exactly what it is, officials said.

If investigators are able to determine the source, the guilty party could cover the cost of clean-up and might be hit with additional fines, officials said.

Chris Conrad