Employment data are from the U.S. Department of Labor's Bureau of Labor Statistics, Occupational Employment and Wage Statistics and Employment Projections programs. State-level projections data are from Projections Central and State Labor Market Information offices.

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          Current Employment for Water and Wastewater Treatment Plant and System Operators in OHIO

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          Rank Region 2025 Employment
          1 Cleveland, OH Metro Area 1,020
          2 Cincinnati, OH-KY-IN Metro Area 960
          3 Columbus, OH Metro Area 730
          4 North Northeastern Ohio Balance of State (noncontiguous) 460
          5 Toledo, OH Metro Area 430
          6 Dayton-Kettering-Beavercreek, OH Metro Area 410
          7 West Northwestern Ohio Balance of State 410
          8 Youngstown-Warren, OH Metro Area 290
          9 Southern Ohio Balance of State 280
          10 Eastern Ohio Balance of State 250
          11 Akron, OH Metro Area 240
          12 Canton-Massillon, OH Metro Area 210
          13 Huntington-Ashland, WV-KY-OH Metro Area 200
          14 Wheeling, WV-OH Metro Area 140
          15 Weirton-Steubenville, WV-OH Metro Area 110
          16 Mansfield, OH Metro Area 80
          17 Sandusky, OH Metro Area 70
          18 Lima, OH Metro Area 50
          19 Springfield, OH Metro Area No Data Available