The average salary for a water treatment plant operator in Maine is around $61,870 per year.
Avg Salary
Water treatment plant operators earn an average yearly salary of $61,870.
Wages typically start from $49,220 and go up to $84,730.
7% below national average Updated in 2025
Water treatment plant operator earnings by seniority
Top-level water treatment plant operator earnings begin at:
$40.74 per hour
$84,730 per year
Senior-level water treatment plant operator earnings begin at:
$34.85 per hour
$72,480 per year
Mid-level water treatment plant operator earnings begin at:
$29.74 per hour
$61,870 per year
Junior-level water treatment plant operator earnings begin at:
$27.84 per hour
$57,920 per year
Starting level water treatment plant operator earnings begin at:
$23.66 per hour
$49,220 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 |
| 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 |
| District of Columbia | $54,880 |
| 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 |
| West Virginia | $47,560 |
| Kansas | $46,780 |
| Mississippi | $46,480 |
| Louisiana | $46,210 |
| Oklahoma | $45,890 |
| Kentucky | $45,430 |
| Arkansas | $44,320 |
| Guam | $40,830 |
| Puerto Rico | $23,950 |
How do water treatment plant operator salaries compare to similar careers?
Water treatment plant operators earn about the same as related careers in Maine. On average, they make less than quality control inspectors but more than metal workers.
| Career | Median Salary |
|---|---|
| Quality control inspector salary | $67K |
| Tool and die maker salary | $80K |
| Petroleum pump system operator salary | $65K |
| Rigger salary | $65K |
| Water treatment plant operator salary | $62K |
| Pump operator salary | $51K |
| Welder salary | $62K |
| Sheet metal worker salary | $62K |
| Machinist salary | $59K |
| Metal worker salary | $59K |
Source: CareerExplorer (Aggregated)