Salaries › Water Treatment Operator › California
Water Treatment Operator Salary in California (2026)
$39.31 per hour · take-home ≈ $62,827/year ($5,236/month) for a single filer
California is the highest-paying state in the country for Water Treatment Operators, with a median about 36% above the national average. Of the 11,630 Water Treatment Operator jobs BLS counts in California, the typical worker earns $81,770 a year — though pay ranges from $56,030 for newcomers to $123,380 at the top.
Water Treatment Operator pay range in California
| Percentile | Annual wage | Meaning |
| 10th percentile (entry) | $56,030 | Lowest-paid 10% earn less than this |
| 25th percentile | $65,250 | A quarter earn less |
| Median (50th) | $81,770 | Half earn more, half earn less |
| 75th percentile | $103,550 | Top quarter starts here |
| 90th percentile (top) | $123,380 | Highest-paid 10% earn more than this |
BLS reports 11,630 Water Treatment Operator jobs in California (occupation code 51-8031, “Water and Wastewater Treatment Plant and System Operators”).
Gross vs. take-home in California
A median Water Treatment Operator salary of $81,770 doesn’t all reach your bank account. After federal income tax, Social Security, and Medicare, plus California state income tax, a single filer keeps about $62,827 — an effective tax rate of 23.2%.
| Gross (median) | $81,770 |
| Federal income tax | −$9,159 |
| Social Security + Medicare | −$6,255 |
| California state income tax | −$3,528 |
| Take-home (annual) | $62,827 |
| Take-home (monthly) | $5,236 |
Want your exact numbers — married, 401(k), different salary? Use the free California paycheck calculator on PaycheckTally.
Frequently asked questions
- How much does a Water Treatment Operator make in California?
- The median Water Treatment Operator salary in California is $81,770 per year ($39.31 per hour) according to the latest BLS data. The middle 50% earn between $65,250 and $103,550.
- What is the take-home pay for a Water Treatment Operator in California?
- On the median salary of $81,770, a single filer in California takes home about $62,827 per year ($5,236 per month) after federal tax, FICA, and state income tax — an effective tax rate of 23.2%.
- How many Water Treatment Operator jobs are there in California?
- BLS counts 11,630 Water Treatment Operator jobs in California in the latest survey (May 2025).
Top-paying states for Water Treatment Operators
Other salaries in California
Sources and methodology
Wage and employment figures: BLS OEWS May 2025 (state file, released April 2026) — the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics survey, the most authoritative public salary dataset. Take-home estimate: 2026 federal brackets, FICA, and verified California state tax rules (single filer, standard deduction, no credits or local taxes). Estimates only — not financial advice.
- BLS OEWS — official occupational wage data.
- PaycheckTally — interactive 2026 take-home calculator for California.