Water and Wastewater Treatment Plant and System Operators in California
Local pay for water and wastewater treatment plant and system operators in California, on the same wage scale as the U.S. Growth and openings are national.
SOC 51-8031
$81,770
median pay, California
11,630
employed in California
+36.2%
vs U.S. median
-6.5%
growth, 2024–34 (U.S.)
What water and wastewater treatment plant and system operators earn in California
California · annual wage · OEWS May 2025
Half of water and wastewater treatment plant and system operators in California earn between $65,250 and $103,550 a year; the U.S. median is $60,020.
$56,030
P10
$65,250
P25
$81,770
MEDIAN
$103,550
P75
$123,380
P90
Pay by metro in California
$125,160
$108,190
$106,150
$101,540
$94,060
$85,960
$85,950
$83,190
$40k $100k $160k