The average salary for a water treatment plant operator in Maryland is around $61,870 per year.
Avg Salary
Water treatment plant operators earn an average yearly salary of $61,870.
Wages typically start from $44,990 and go up to $88,970.
18% below national average Updated in 2025
Water treatment plant operator earnings by seniority
Top-level water treatment plant operator earnings begin at:
$42.77 per hour
$88,970 per year
Senior-level water treatment plant operator earnings begin at:
$36.95 per hour
$76,850 per year
Mid-level water treatment plant operator earnings begin at:
$29.75 per hour
$61,870 per year
Junior-level water treatment plant operator earnings begin at:
$23.95 per hour
$49,820 per year
Starting level water treatment plant operator earnings begin at:
$21.63 per hour
$44,990 per year
Approximate values based on highest and lowest earning segments.
Water treatment plant operator salary by state
| State Name | Average Salary |
|---|---|
| California | $81,770 |
| Nevada | $81,440 |
| Washington | $80,800 |
| District of Columbia | $78,890 |
| Connecticut | $78,820 |
| New Jersey | $78,760 |
| Minnesota | $74,670 |
| Colorado | $74,200 |
| Oregon | $69,720 |
| Massachusetts | $68,550 |
| Illinois | $67,810 |
| Hawaii | $65,560 |
| Delaware | $64,940 |
| New York | $63,990 |
| Vermont | $63,640 |
| Wisconsin | $63,550 |
| Pennsylvania | $63,310 |
| Wyoming | $63,260 |
| New Hampshire | $62,940 |
| Maryland | $61,870 |
| Maine | $61,870 |
| Rhode Island | $61,820 |
| Arizona | $61,340 |
| Utah | $61,290 |
| Nebraska | $61,220 |
| Iowa | $60,990 |
| North Dakota | $60,470 |
| Alaska | $60,160 |
| Virginia | $59,420 |
| Michigan | $59,270 |
| Ohio | $59,170 |
| Florida | $59,030 |
| Montana | $58,040 |
| Indiana | $53,540 |
| South Dakota | $53,370 |
| Idaho | $52,210 |
| South Carolina | $52,090 |
| Alabama | $51,870 |
| North Carolina | $51,680 |
| Tennessee | $50,670 |
| Missouri | $49,940 |
| Texas | $49,460 |
| Georgia | $48,930 |
| New Mexico | $48,190 |
| Guam | $47,610 |
| West Virginia | $47,560 |
| Kansas | $46,780 |
| Mississippi | $46,480 |
| Louisiana | $46,210 |
| Oklahoma | $45,890 |
| Kentucky | $45,430 |
| Arkansas | $44,320 |
| Puerto Rico | $27,910 |
How do water treatment plant operator salaries compare to similar careers?
Water treatment plant operators earn about the same as related careers in Maryland. On average, they make less than pipefitters but more than locksmiths.
| Career | Median Salary |
|---|---|
| Pipefitter salary | $65K |
| Plumber salary | $65K |
| Carpenter salary | $63K |
| Ironworker salary | $72K |
| Millwright salary | $59K |
| Water treatment plant operator salary | $62K |
| Welder salary | $60K |
| Sheet metal worker salary | $63K |
| Glazier salary | $60K |
| Locksmith salary | $60K |
Source: CareerExplorer (Aggregated)