How much do Water and Wastewater Treatment Plant and System Operators make in Napa, CA?

Percentile spread

For Water and Wastewater Treatment Plant and System Operators, the published 10th percentile is $61,400 and the 90th percentile is $127,960. The difference is $66,560, which is 65.6% of the median. Ten percent of measured wages fall below the 10th percentile and ten percent fall above the 90th. How to read a percentile.

The middle half of the distribution, from the 25th percentile at $80,670 to the 75th at $113,130, covers $32,460.

The mean annual wage is $97,320, which sits below the median of $101,540. Median and mean measure different points in the same distribution.

National and state comparison

The Napa, CA median is 69.2% higher than the national median of $60,020 for Water and Wastewater Treatment Plant and System Operators. In 2024 national prices the local median is $90,214, which is 50.3% higher than that same national median. The national figure is already in national prices because the United States parity is 100.

It is 24.2% higher than the California median of $81,770.

Price-adjusted pay

The 2024 all-items regional price parity for Napa, CA is 112.554, with the United States at 100. The Bureau of Economic Analysis released those parities on February 19, 2026. Dividing the May 2025 median of $101,540 by that parity and multiplying by 100 puts Water and Wastewater Treatment Plant and System Operators at $90,214 in national prices. The wage year and the price year are different. Compare this wage after prices.

Nearby metros

15 other metropolitan areas within 200 miles publish a annual median for Water and Wastewater Treatment Plant and System Operators. Napa, CA ranks 4th of 16 on that median, counting itself. Distance is the great-circle mileage between Census Bureau internal points (U.S. Census Bureau, 2024 Gazetteer Files, Core Based Statistical Areas, internal points (INTPTLAT, INTPTLONG).).

• Vallejo, CA is 27 miles away, with a median of $106,150 and employment of 200. That median is 4.5% higher than the median here. In 2024 national prices it is $97,853, against $90,214 here.
• Santa Rosa-Petaluma, CA is 32 miles away, with a median of $82,200 and employment of 190. That median is 19% lower than the median here. In 2024 national prices it is $76,264, against $90,214 here.
• San Francisco-Oakland-Fremont, CA is 51 miles away, with a median of $125,160 and employment of 1,040. That median is 23.3% higher than the median here. In 2024 national prices it is $108,258, against $90,214 here.

Employment share

Water and Wastewater Treatment Plant and System Operators accounts for 0.13% of wage-and-salary employment in Napa, CA (100 of 77,860). Nationally the occupation is 0.08% of employment (128,490 of 155,495,730). The local share is 1.55 times the national share. That ratio is the location quotient computed from these May 2025 employment counts. It is not copied from the location-quotient column in the BLS bulk file.