Wastewater Treatment Lagoon Odor

During the past month, the City of Ontario’s wastewater treatment lagoon has experienced odor issues.  The odors are the result of seasonal water temperature changes that bring decomposing biosolid gases to the lagoon surface which are then dispersed by wind.   

City staff are implementing all available mitigation measures to address this issue in the near term and the City has committed funds to remove the biosolids build up later this year. Removal of the biosolids build up should solve the problem going forward. The City appreciates the patience of the community as we remedy this problem.

​For questions, please contact Public Works Director, Cliff Leeper at (541) 889-8572.