How much do wastewater treatment operators make in 2026?
Wastewater treatment operators are counted in the BLS water and wastewater treatment plant and system operators series: OEWS May 2025 puts SOC 51-8031 at a national median of $60,020 a year ($28.86 an hour), with the bottom 10% near $39,110 and the top 10% at $91,060. The series pools wastewater with drinking water operators, so it describes the treatment trade as a whole. What structures pay in this occupation is certification class. Every state certifies operators in graded classes tied to plant complexity, and moving up a class requires documented operating experience plus passing an examination — which means the career has an unusually explicit and transparent ladder. A Class I operator at a small package plant sits near the bottom of this band; a Class IV or equivalent operator running a large activated sludge or advanced nutrient removal facility sits near the top. Employer type is mostly municipal, which brings modest base pay alongside pension provision, stability and predictable progression; industrial pretreatment operators and contract operations firms pay somewhat more. Shift coverage, on-call and licence-related differentials are standard. Employment is projected to decline 6.5% through 2034, with roughly 10,700 openings a year. → Full wastewater treatment operator career guide, career path, credentials & placement →
Note: $60,020 blends every experience level and every setting in this occupation. For pay by level alone, see Pay by Level below.
- Wastewater Treatment Operators earn a national median $60,020/yr ($28.86/hr) (BLS OEWS May 2025, SOC 51-8031); the P10 to P90 range is $39,110 to $91,060.
- Certification class is the pay ladder: every state grades operators by plant complexity, and moving up requires documented experience plus an examination, which makes progression unusually transparent.
- Most employment is municipal, trading modest base pay for pension provision, stability and defined progression; industrial pretreatment and contract operations pay somewhat more.
- The BLS series pools wastewater with drinking water operators, so $60,020 describes the treatment trade as a whole rather than wastewater specifically.
US Wastewater Treatment Operator Pay Distribution · BLS OEWS May 2025
Pay by Level · BLS OEWS May 2025
How much do wastewater treatment operators earn at each level?
BLS OEWS publishes one blended wage for the whole occupation and does not break pay out by credential or practice level. The levels below distribute the published percentile range across the credential tiers this role actually hires at.
Level medians are aligned to the BLS OEWS May 2025 percentile distribution for SOC 51-8031; GlobalCybers does not yet publish a verified placement sample for this role, so no verified median is shown.
Methodology & Sources
How the numbers on this page are built
Published (BLS): BLS OEWS May 2025, SOC 51-8031, United States national estimate. Public, methodologically rigorous, but sampled on a rolling 3-year basis and published ~10 months after collection — so it reflects wages that are already 1–2 years old by the time you read them.
Level and certification medians: distributed across the published BLS percentile range for this SOC code (P10 through P90) according to the credential tiers this occupation actually hires at. They are modeled reference points, not separately surveyed wages.
State and metro figures: modeled — the BLS national median multiplied by the GlobalCybers state wage index, and for metros by the published metro index for that state. They are estimates of local pay, not BLS state or metropolitan-area observations, and are labelled as modeled in the tables below.
No verified placement sample:GlobalCybers does not yet publish a placement median for this role, so no "verified" figure appears anywhere on this page.
Pay by Career Level
How much does a wastewater treatment operator earn at each career stage?
Wastewater pay follows certification class and the complexity of the plant you are licensed to run. Each median is anchored to the BLS OEWS distribution for SOC 51-8031.
By State
Which states pay wastewater treatment operators the most in 2026?
These are modeled state estimates — the BLS national treatment operator median scaled by the GlobalCybers state wage index — not BLS state observations. Certification is state-issued and graded by plant class, so what a given class is worth genuinely differs between states, and reciprocity between them is possible but never automatic.
6 of 51 state guides shown, ranked by median. Bar is relative to California ($69,020), the highest-paying state shown. See all 51 state salary guides →
By Metro
Which cities pay wastewater treatment operators the most?
Modeled metro estimates: the national median scaled by the state wage index and then by that state's published metro index. They estimate local wage levels and are not BLS metropolitan-area observations. Large municipal systems pay above small rural districts in the same state.
BLS OEWS MSA estimates, May 2025. Nominal pay — weigh each metro against its cost of living before relocating.
Certification Impact
Which certifications raise a wastewater treatment operator’s pay the most?
Median annual pay before and after each credential, based on GlobalCybers placement data cross-referenced with BLS. License upgrades move the needle most; stackable certs add on top.
Impacts are not additive, the licensing rows share the same career ladder. Browse all 167 certifications →
Trade Comparison
How does wastewater treatment operator pay compare to related roles?
BLS OEWS national median across the closest trades. Wastewater Treatment Operators sit mid-pack on median but carry one of the widest P10–P90 spreads, licensing and specialization drive the upside.
BLS OEWS May 2025. Verify wastewater treatment operator wages on BLS.gov →
Take-Home Pay
What does a wastewater treatment operator actually take home after taxes?
The medians above are gross base wage.
Estimates use 2026 federal brackets, standard deduction, and 7.65% FICA. Actual take-home varies with filing status, deductions, and local tax.
FAQ
Wastewater Treatment Operator Salary, Frequently Asked Questions
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