Mission Statement "In conformity with Mahoning County's Mission Statement, the Sanitary Engineering Department, for all customers of the Metropolitan Sewer District and residents and businesses of Mahoning County will deliver quality service, Promote public health, safety and work towards the preservation of the general well being of the community, especially in areas of the environment. The department is committed to assisting the community in economic development through responsible planned use of the sanitary sewer system. The department supports and encourages community self reliance and responsibility while serving as a model employer.