' license State of Washington Certification as a Group 3 Wastewater Operator Water Distribution Manager (WDM) 1 certification... and manage the day-to-day activities of the Water, Wastewater Utility, and is responsible for the on-going operation...
Wastewater Treatment Plant Operator Certification by Washington Department of Ecology Water Distribution Manager II... is primarily responsible for the operation and maintenance of wastewater treatment plants, collection systems, drinking water...