News release City of Coos Bay.  The City of Coos Bay’s Wastewater Treatment Plant No. 1, located at 680 Ivy Avenue, has experienced a plant upset.  The City’s wastewater crews are taking immediate action to correct the saturation; however, it is not known at this time how long it will take to get the plant back in balance.  Because of the potential of endangering human health and the environment, this situation was reported to Department of Environmental Quality and Coos Health and Wellness.  Updates will be provided as our investigation reveals more information.  Any questions can be directed to the Public Works & Development Department at (541) 269-8918.