Washington employs 2,320 Water and Wastewater Treatment Plant and System Operators professionals, below the national average concentration.
Data: BLS OEWS 2024 • Washington employment outlook • Updated 2026-04-06
The location quotient (LQ) of 0.95 indicates that Washington has an average concentration of Water and Wastewater Treatment Plant and System Operators professionals, similar to the national average employment distribution.
Note: Location Quotient (LQ) is the ratio of the percentage of workers in an occupation in a given area to the percentage in that occupation nationwide. An LQ > 1.0 means above-average concentration; < 1.0 means below-average.
The average annual salary for a Water and Wastewater Treatment Plant and System Operators in Washington is $80,850. For a detailed breakdown by percentile, entry-level, median, and senior salaries, see the comprehensive salary guide below.
Washington employs approximately 2,320 Water and Wastewater Treatment Plant and System Operators professionals (2024 BLS data). This ranks Washington for this occupation nationwide.
Washington has average or below-average concentration of Water and Wastewater Treatment Plant and System Operators jobs (LQ: 0.95). A Location Quotient above 1.0 indicates higher-than-average demand.
The average (mean) salary for Water and Wastewater Treatment Plant and System Operators in Washington is $80850/year. See our detailed salary page for percentile breakdowns.
Location Quotient measures how concentrated an occupation is in a state compared to the national average. LQ > 1.0 means the state has more of that job proportionally. LQ > 1.2 indicates strong demand.
The top state for Water and Wastewater Treatment Plant and System Operators employment is Texas with 10,770 jobs.
Employment and location quotient data sourced from the U.S. Bureau of Labor Statistics (BLS) Occupational Employment and Wage Statistics (OEWS) 2024. This data reflects total employment, jobs per 1,000 workers, location quotient, and average salary for Water and Wastewater Treatment Plant and System Operators (SOC 518031) in Washington.