| Occupation | 
Occ. code | 
Est. empl. | 
Mean wage | 
10th pct | 
25th pct | 
Median wage | 
75th pct | 
90th pct | 
 
| Water and Wastewater Treatment Plant and System Operators | 51-8031 | 80 | 59,091 28.41 | 33,689 16.19 | 38,478 18.50 | 55,374 26.63 | 82,289 39.56 | 94,706 45.53 |  
| Gas Plant Operators | 51-8092 |  | 
47,331 22.76 | 33,301 16.01 | 34,889 16.77 | 37,534 18.05 | 40,180 19.32 | 90,815 43.66 |  
 
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