Best Water programs in California, ranked by enrollment
Operate or control an entire process or system of machines, often through the use of control boards, to transfer or treat water or.
19 schools in California run programs that feed this job, graduating 414 people a year. The job pays a median of $81,770 in California across about 11,630 jobs (BLS OEWS May 2025).
Fields of study in California that lead to this job
Grouped at the 4-digit CIP level. Numbers are graduates per year in this state.
1 programs in California that lead to this job
Ranked by graduates per year in California (IPEDS completions). Graduate earnings and debt are national College Scorecard figures reported at the 4-digit CIP level, so specializations within one field share a figure. Each program also links to its own California page.
| # | Program | Graduates / yr | Share of pipeline | Schools | Grad earnings (1 yr) | Median debt |
|---|---|---|---|---|---|---|
| 1 | CIP 15.0506In California → | 414 | 100.0% | 19 | $36,407 | $10,250 |
Top 19 schools in California
Ranked by graduates per year into this job. Graduate earnings are reported for 1 of the 19 schools in this state.
All 19 schools in California
Every school in California with a program that feeds this job, ordered by graduates per year. Earnings are shown for the ranked schools above; open a school profile for the rest.
| School | City | Control | Graduates / yr | Feeder programs |
|---|---|---|---|---|
| Santiago Canyon College | Orange | Public | 79 | 1 |
| Palomar College | San Marcos | Public | 49 | 1 |
| Santa Rosa Junior College | Santa Rosa | Public | 47 | 1 |
| College of the Canyons | Santa Clarita | Public | 39 | 1 |
| Citrus College | Glendora | Public | 34 | 1 |
| Columbia College | Sonora | Public | 23 | 1 |
| Ventura College | Ventura | Public | 23 | 1 |
| Cuyamaca College | El Cajon | Public | 21 | 1 |
| Mt San Jacinto Community College District | San Jacinto | Public | 20 | 1 |
| Gavilan College | Gilroy | Public | 17 | 1 |
| San Bernardino Valley College | San Bernardino | Public | 17 | 1 |
| Solano Community College | Fairfield | Public | 13 | 1 |
| Imperial Valley College | Imperial | Public | 12 | 1 |
| Los Angeles Trade Technical College | Los Angeles | Public | 10 | 1 |
| Shasta College | Redding | Public | 4 | 1 |
What water and wastewater treatment plant and system operators earn in California
What people already working in this job earn (BLS OEWS May 2025). Not graduate earnings.
U.S. median $60,020. California pays above the national figure.
1.00× means the state has its expected share of these jobs.
Metro areas in California
Job outlook
Bureau of Labor Statistics Employment Projections, 2024 to 2034.
Growth and openings are national. The Bureau of Labor Statistics does not publish employment projections at state level, so these figures describe the occupation across the whole U.S., not this state alone.
How to get in
The full skills, tools, and day-to-day breakdown lives on the national Water and Wastewater Treatment Plant and System Operators page.
How to become a Water
Job zone 2 of 5 · SVP Below 6.0- Typical entry education
- High school diploma or equivalent
- On-the-job training
- Long-term on-the-job training
Usually requires a high school diploma or GED, though some occupations may not.
Some occupations may need little or no previous experience; others require several months to a year of experience. For example, landscaping and groundskeeping workers might require very little training or previous experience, while agricultural equipment operators can benefit from on-the job training.
Ranges from a few days to one year of on-the-job training.
Top skills
The same job in other states
Where else this occupation employs the most people, and what it pays there.
Related careers in California
Every major mapped to this job
The official federal mapping behind the rankings above.
All 1 majors mapped to Water and Wastewater Treatment Plant and System Operators1 of them graduated someone in the latest IPEDS year. NCES CIP 2020 → SOC 2018 crosswalk.+
- 15.0506Water Quality and Wastewater Treatment Management and Recycling Technology/Technician
Common questions
Answers for people weighing water and wastewater treatment plant and system operators programs in California.
What degree do you need to become a Water?+
High school diploma or equivalent is the typical entry-level education BLS reports for this occupation. The most common program people actually graduate from is Water Quality and Wastewater Treatment Management and Recycling Technology/Technician, which awarded 414 degrees in California in 2024-25, 100.0% of everyone graduating from a program that feeds this career.
Which college majors lead to becoming a Water?+
The NCES CIP-to-SOC crosswalk maps 1 programs to this occupation. The largest are Environmental Control Technologies/Technicians. Together they graduate about 414 people a year in California.
How much do water and wastewater treatment plant and system operators earn in California?+
The median is $81,770 a year (BLS OEWS May 2025). That is 36.2% above the U.S. median of $60,020. This is pay for people already working in the occupation, not the same thing as graduate earnings one year after finishing a degree.
Is demand for water and wastewater treatment plant and system operators growing?+
BLS projects a -6.5% change in employment between 2024 and 2034, decline, with roughly 10,700 openings a year nationally once retirements and job changes are counted.
How many schools offer programs for this career in California?+
19 institutions in California reported graduates from at least one of the 1 programs that feed this occupation in IPEDS 2024-25. Rankings on this page use graduates per year, because the federal data publishes no enrollment count by program.
What other job titles do water and wastewater treatment plant and system operators work under?+
Employers advertise this work under many names. O*NET records Water Plant Operator, Water Treatment Operator, Water Treatment Plant Operator, Wastewater Operator (WW Operator) among the most commonly reported, all mapping to SOC 51-8031.
About the data on this page
Rankings use IPEDS completions 2024–25, degrees awarded per year. That is the closest federal measure of how many people a program puts into a career, because no federal dataset publishes enrollment by program. Wages and employment come from BLS OEWS May 2025, growth and openings from BLS Employment Projections 2024-34, and which majors lead to which jobs from the NCES CIP 2020 to SOC 2018 crosswalk. Occupation descriptions, tasks, skills and tools are O*NET 30.3 (CC BY 4.0, U.S. Department of Labor/ETA).
BLS Occupational Employment & Wage Statistics
May 2025Wages, employment counts, location quotients and metro breakdowns.
BLS Employment Projections
2024–34Projected growth, annual openings and typical entry-level education.
IPEDS Completions
2024-25 (provisional)Graduates per year by program and institution — the ranking metric.
College Scorecard, Field of Study
2020-21 cohortsMedian graduate earnings one year after completion, and median debt.
Census Post-Secondary Employment Outcomes
latest availableGraduate earnings 1/5/10 years out, where the state participates.
NCES CIP 2020 and the CIP-to-SOC 2018 crosswalk
CIP 2020 / SOC 2018Which college programs officially lead to this occupation.
O*NET Database 30.3
30.3Tasks, skills, knowledge, tools, job zone and alternate job titles.
Official source →CC BY 4.0, U.S. Department of Labor / ETA
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