Salary comparison
Water and Wastewater Treatment Plant and System Operators: Napa vs Mount Vernon
Napa, CA pays about 16.3% more for water and wastewater treatment plant and system operators on paper — $101,540 vs $87,310. But once you factor in what it costs to live there, Napa comes out ahead by $14,230 a year in real buying power.
Napa, CA
$101,540
$80,670
$113,130
$48.82
100
$101,540/yr
Median adjusted for local cost of living.
Mount Vernon, WA
$87,310
$72,120
$100,610
$41.98
100
$87,310/yr
Median adjusted for local cost of living.
What the numbers mean in practice
The headline gap is $14,230 a year (16.3%) in favor of Napa. That is the raw salary difference before any living costs.
Napa runs a cost index of 100 against the national baseline of 100; Mount Vernon sits at 100. After adjusting the median for those costs, Napa is the better deal by $14,230 a year — that is what each paycheck actually buys locally.
If you are weighing a move from Mount Vernon to Napa for this role, the raise needs to beat 16.3% to come out ahead after living costs. Anything below that and you are earning more on paper but keeping less.
Common questions
Where do water and wastewater treatment plant and system operators earn more, Napa or Mount Vernon?
Napa pays $101,540 on median — about 16.3% more than Mount Vernon ($87,310). Based on BLS Occupational Employment and Wage Statistics.
Which city is the better deal after living costs?
Napa. Once you divide each median by the local cost index, Napa gives you roughly$101,540 of real buying power versus $87,310 in the other city.