The average salary for a water treatment plant operator in Montana is around $58,040 per year.
Avg Salary
Water treatment plant operators earn an average yearly salary of $58,040.
Wages typically start from $37,320 and go up to $81,420.
7% below national average Updated in 2025
Water treatment plant operator earnings by seniority
Top-level water treatment plant operator earnings begin at:
$39.14 per hour
$81,420 per year
Senior-level water treatment plant operator earnings begin at:
$32.97 per hour
$68,580 per year
Mid-level water treatment plant operator earnings begin at:
$27.90 per hour
$58,040 per year
Junior-level water treatment plant operator earnings begin at:
$24.02 per hour
$49,960 per year
Starting level water treatment plant operator earnings begin at:
$17.94 per hour
$37,320 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 Montana. On average, they make less than pump operators but more than molding and casting workers.
| Career | Median Salary |
|---|---|
| Pump operator salary | $72K |
| Industrial designer salary | $73K |
| Non-Destructive testing specialist salary | $66K |
| Sheet metal worker salary | $61K |
| Chemical technician salary | $53K |
| Water treatment plant operator salary | $58K |
| Machinist salary | $61K |
| Welder salary | $56K |
| Quality control inspector salary | $52K |
| Molding and casting worker salary | $58K |
Source: CareerExplorer (Aggregated)