Who Earns What

How much does a water plant operator make?

US Water and Wastewater Treatment Plant and System Operators
$60,020

a year · about $29 an hour

A typical water plant operator in the United States makes $60,020 a year, about $29 an hour, about the same as a typical US worker (median, May 2025, US Bureau of Labor Statistics).

What do they do?

They collect and test water or sewage samples, watch gauges and controls, and adjust equipment or add treatment chemicals. They record readings and inspect or repair machines to keep the treatment process working.

Did you know? If a power outage stops a plant, operators may have to run equipment by hand to keep water treatment going.

Is that a lot?

Compared with jobs you know
This job$60,020
Typical worker$50,980
Elementary teacher$63,970
Doctor$244,180
Cashier$32,880

If 100 people had this job

Most earn between $39,110 and $91,060
50 of 100
more than half

How do you become one?

In the U.S., most start with a high school diploma or GED, then learn on the job; repair skills can help. A state license is usually needed, and trainees often work toward it on the job, with exam rules varying by state.

School needed: High school plus some training

Good for people who like building and doing and keeping things organized

Why does pay differ?

In the United States, experience and higher state-license levels can lead to more responsible, specialized work, such as supervising a large team. Pay also varies by employer and location, and some employers offer extra pay for night shifts.

Where does it pay most?

Highest in California ($81,770), lowest in Arkansas ($44,320).

See every state
Whole US$60,020
California$81,770
Washington$80,800
Connecticut$78,820
New Jersey$78,760
Minnesota$74,670
Oklahoma$45,890
Kentucky$45,430
Arkansas$44,320

Top 5 and bottom 3 states, typical (median) yearly pay.

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Who earns more?
Data table and sources
Water plant operator pay in the United States (May 2025, median and spread) — Data: US BLS OEWS, May 2025
Lower earner (10th from bottom)Typical person (median)Higher earner (10th from top)People in this job
$39,110$60,020$91,060about 128,000
States where water plant operators earn the most (median, May 2025)
StateTypical person (median)People in this job
California$81,770about 12,000
Washington$80,800about 2,000
Connecticut$78,820about 980
New Jersey$78,760about 3,000
Minnesota$74,670about 2,000

Official definition: Operate or control an entire process or system of machines, often through the use of control boards, to transfer or treat water or wastewater.

Source: US Bureau of Labor Statistics, OEWS May 2025 (bls.gov); descriptions and related jobs from O*NET 31.0. Figures as of May 2025, full-time yearly pay (hourly × 2,080 hours). bls.gov/oes · O*NET OnLine

Pages used for the text

Data: US BLS OEWS, May 2025 · 1 USD = 150 JPY