Maryland ranks 26th of 50 states and D.C. for water and wastewater treatment plant and system operators pay, trailing top-paying California ($82,100) by $23,360 — a 40% gap.
The 10th-to-90th percentile range runs from $40,750 to $94,920 — a $54,170 spread, 12% wider than the national $48,290 range.
Water and Wastewater Treatment Plant and System Operators are less concentrated in Maryland than the U.S. average — a location quotient of 0.72 means the occupation's share of local jobs is 1.39× below the national share.
Salary Range: 10th to 90th Percentile
Full Percentile Breakdown
| Percentile | Annual Wage | Hourly Wage |
|---|---|---|
| 10th percentile (entry-level) | $40,750 | $19.59 |
| 25th percentile | $48,250 | $23.20 |
| 50th percentile (median) | $58,740 | $28.24 |
| 75th percentile | $73,110 | $35.15 |
| 90th percentile (top earners) | $94,920 | $45.64 |
| Mean (average) | $61,920 | $29.77 |
How Maryland Compares
| State | Median Annual | vs. Maryland |
|---|---|---|
| Maryland (current) | $58,740 | n/a |
| California | $82,100 | +40% |
| Nevada | $79,140 | +35% |
| Washington | $78,810 | +34% |
| Alaska | $76,910 | +31% |
| New Jersey | $75,200 | +28% |
| Connecticut | $74,450 | +27% |
| Minnesota | $70,470 | +20% |
| Colorado | $68,220 | +16% |
Showing top-paying states with available data. View all states →
Related Occupations in Maryland
| Occupation | Median Annual | Employment |
|---|---|---|
| Inspectors, Testers, Sorters, Samplers, and Weighers | $58,710 | 4,100 |
| Glaziers | $58,520 | 1,350 |
| Career/Technical Education Teachers, Postsecondary | $58,990 | 880 |
| Brickmasons and Blockmasons | $58,420 | 1,420 |
| Massage Therapists | $58,390 | 1,330 |
| Postal Service Mail Carriers | $58,390 | 6,630 |
Frequently Asked Questions
What is the average Water and Wastewater Treatment Plant and System Operators salary in Maryland?
The mean water and wastewater treatment plant and system operators salary in Maryland is $61,920 per year. The median (middle) salary is $58,740 per year.
What is the starting salary for a Water and Wastewater Treatment Plant and System Operators in Maryland?
Entry-level water and wastewater treatment plant and system operatorss (10th percentile) in Maryland typically earn around $40,750 per year. Workers at the 25th percentile earn approximately $48,250 per year.
What is the highest Water and Wastewater Treatment Plant and System Operators salary in Maryland?
Top earners (90th percentile) in this occupation in Maryland make approximately $94,920 per year. Those in the 75th percentile earn around $73,110 per year.
How does the Maryland Water and Wastewater Treatment Plant and System Operators salary compare to the national average?
The median water and wastewater treatment plant and system operators salary in Maryland is $58,740, which is +1% above national average of $58,260.