Water and Wastewater Treatment Plant and System Operators Salary in Washington
State wage data from the BLS OEWS survey, May 2025.
Median annual
$80,800
Median hourly
$39
Average annual
$82,770
Employed in state
2.0K
The median annual salary for Water and Wastewater Treatment Plant and System Operators in Washington is $80,800, or about $39 an hour. That is 35% higher than the national median.
Pay in Washington ranges from $57,720 at the 10th percentile to $106,270 at the 90th percentile. Roughly 2.0K people work as water and wastewater treatment plant and system operators in the state.
Pay distribution in Washington
10th$57,720
25th$67,690
Median$80,800
75th$99,940
90th$106,270
Salary calculator
- Hourly
- $38.85
- Daily
- $311
- Weekly
- $1,554
- Bi-weekly
- $3,108
- Monthly
- $6,733
- Annual
- $80,800
$80,800 a year is around the 50th percentile for Water and Wastewater Treatment Plant and System Operatorss in Washington. The median is $80,800.
Water and Wastewater Treatment Plant and System Operators pay by metro area in Washington
| Metro area | Median annual | Employment |
|---|---|---|
| Seattle-Tacoma-Bellevue, WA | $99,010 | 830 |
| Olympia-Lacey-Tumwater, WA | $88,270 | 70 |
| Wenatchee-East Wenatchee, WA | $87,840 | 40 |
| Mount Vernon-Anacortes, WA | $87,310 | 90 |
| Portland-Vancouver-Hillsboro, OR-WA | $83,860 | 450 |
| Bellingham, WA | $81,430 | 80 |
| Spokane-Spokane Valley, WA | $81,240 | 130 |
| Kennewick-Richland, WA | $80,750 | 80 |
| Bremerton-Silverdale-Port Orchard, WA | $79,100 | 90 |
| Yakima, WA | $75,290 | 90 |
| Longview-Kelso, WA | $64,420 | 30 |
| Lewiston, ID-WA | $61,830 | 70 |
Other jobs in Washington
- Software Developers$135,980
- Home Health and Personal Care Aides$35,800
- Fast Food and Counter Workers$31,200
- Retail Salespersons$35,410
- Registered Nurses$97,550
- Cashiers$32,880
- Stockers and Order Fillers$37,330
- Business Operations Specialists, All Other$83,050
- General and Operations Managers$105,770
- Laborers and Freight, Stock, and Material Movers, Hand$40,240
- Office Clerks, General$45,010
- Janitors and Cleaners, Except Maids and Housekeeping Cleaners$36,840
- Waiters and Waitresses$35,230
- Teaching Assistants, Except Postsecondary$36,780
- Heavy and Tractor-Trailer Truck Drivers$58,640
- Customer Service Representatives$44,770
- Project Management Specialists$102,320
- Cooks, Restaurant$37,390
- Accountants and Auditors$83,680
- Bookkeeping, Accounting, and Auditing Clerks$50,670