Wastewater Treatment Plant Operator salary at San Mateo

The average wastewater treatment plant operator salary at San Mateo was $161,942 , which is 28 percent higher than the average salary for this job in California, and 197 percent higher than the national average for this job . Wastewater Treatment Plant Operator salaries at San Mateo typically range from $159,502 to $184,019 (25th to 75th percentile). The highest reported wastewater treatment plant operator salary was $195,653. There are 14 employees at San Mateo with the job title wastewater treatment plant operator.