The plant has a sophisticated odor control system. In 2010 the City completed a 1 million dollar upgrade to our Odor Control system at the Wastewater Treatment plant. The system prevents odors from escaping from the treatment plant site. The City considers the control of odors at the wastewater treatment plant to be one of the highest operating priorities. Wastewater Plant operators also work hard at preventing odors from the sewer collection and pumping systems. These systems may produce odors that are in areas not close to the treatment plant. If you smell odors from the plant or the sewer collection system it is important to notify the plant operating staff immediately. During working hours a plant operator will respond right away, please call the plant immediately at 360-299-0953.