Package Plant Operator Staffing Requirements: What TCEQ Certification Level Does a Development Actually Need?

Who has to provide a licensed operator?

The permit holder. Under TCEQ's operator rule, 30 TAC §30.350, each holder of a wastewater permit for a treatment facility employs or contracts with operators holding the right license, or with a registered wastewater operations company that employs them. For a private plant, that is the developer, district or other entity named on the permit.

Everyone who operates or helps operate the plant must be licensed. The one exception is an operator-in-training, allowed for up to a year and only while working in the presence of a licensed operator.

A package plant does not run itself. Influent changes, equipment wears and the biology needs adjusting to stay within the permit, so the staffing plan belongs in the project from the start, next to design and permitting.

What category is your plant?

It depends on the process and the permitted daily average flow. TCEQ's license level table for domestic wastewater facilities sets the categories most package plants fall into:

• Activated sludge in extended aeration mode, and oxidation ditches: Category D at 0.10 MGD or less, C above 0.10 to 1.0 MGD, B above 1.0 to 10.0 MGD, A above that.
• Activated sludge in other modes: Category D at 0.050 MGD or less, C above 0.050 to 1.0 MGD, then B and A at the same breakpoints.
• Trickling filters and other fixed-film processes: Category D at 0.50 MGD or less, C above 0.50 to 2.0 MGD, B above 2.0 to 10.0 MGD, A above that.
• No-discharge systems: Category D, or Category C with subsurface area drip dispersal.

Three things move a Category D plant up to C. They are anaerobic sludge digestion (except Imhoff tanks with sludge drawn off to drying beds), a permit that requires nutrient reduction, and a permit that requires a daily average BOD or TSS below 10 mg/L. A plant with processes in different categories takes the higher one, and TCEQ may raise the category for unusually complex processes.

SBRs and MBRs are activated sludge processes, but the table has no row of their own. Whether one falls under extended aeration or other modes depends on its design, so confirm the row with TCEQ.

What does each license class require?

From a high school diploma and 20 training hours for Class D to years of experience for Class A. Under TCEQ's license qualification rule, 30 TAC §30.340, each license also requires passing an exam:

• Class D: a high school diploma or equivalent, no experience and 20 hours of training.
• Class C: a diploma or equivalent, 2 years of experience and 60 hours of training.
• Class B: 5 years of experience with a diploma, or 2 years with a bachelor's degree, plus 100 hours of training.
• Class A: 8 years with a diploma, 5 with a bachelor's or 4 with a master's, plus 160 hours of training.

At least half the required experience must be actual domestic wastewater treatment work. Since March 23, 2025, someone without a diploma can hold a two-year provisional Class D license under the direct supervision of a license holder.

A Class C license takes at least two years of experience, so many developments contract an operator rather than hire one.

How much operator time does the rule require?

At least five days a week, with a licensed operator reachable by phone seven days a week. Section 30.350 requires the plant to be operated at least five days a week by the chief operator or another operator holding the required license. The chief operator's license must be at or above the plant's category.

If the plant runs shifts, each shift is run by an operator in charge licensed no more than one level below the category. The chief operator or the operator in charge must be present for scheduled TCEQ inspections.

The permit adds its own workload: what gets sampled, how often and which reports go out. Two plants of the same size can need very different operator time if one has tighter limits.

Is contract operations allowed?

Yes, and it is common. Section 30.350 lets the permit holder contract with licensed operators or a registered wastewater operations company. Under TCEQ's operations company rule, 30 TAC §30.355, a registered company reports to TCEQ, for each plant it runs, its operators' license numbers and the plant's chief operator.

Ask a contract operator for its registration, the chief operator named for your plant and its backup coverage for absences.

The money risk stays with the owner. Under §30.331, an operator's license is not at risk when a plant cannot be run properly because the permit holder refuses to fund its operation, or because of faulty design or construction.

What has to be in place before startup?

An operator, an O&M manual and a named owner for every report. Under TCEQ's O&M manual rule, 30 TAC §217.16, the plant owner develops an operation and maintenance manual with an engineer and certified operations staff.

The manual covers startup, routine, emergency and shutdown procedures for every unit, a sample of each monitoring report the plant must submit, a sample daily activity report and the maintenance schedule. It is updated with staff changes, new or altered units and lasting changes in the influent.

That rule alone puts the operator on the project before startup. Startup is also when the biology is least stable, so bring the operator in during construction.

Is your plant staffed for startup?

Answer each item yes or no. Any "no" should be fixed before the plant receives flow.

1. Do you know the plant's category from its process, permitted flow and permit limits?
2. Is a chief operator named, licensed at or above that category?
3. Is there a backup operator for absences, and a licensed operator reachable seven days a week?
4. If you contract operations, is the company registered with TCEQ?
5. Has the O&M manual been written with the engineer and the operator?
6. Is it clear who collects samples and submits each report, and when?
7. Is operator coverage in the operating budget?

Limits: this is general education on TCEQ's operator rules in 30 TAC Chapter 30, Subchapter J, as amended effective March 23, 2025, and on Chapter 217. Your permit and TCEQ's classification of your plant decide the actual requirement.

Frequently asked questions

What license does a small package plant operator need in Texas?

For an extended aeration plant of 0.10 MGD or less, at least a Class D chief operator. If the permit requires nutrient reduction or a BOD or TSS limit under 10 mg/L, the plant is Category C and needs a Class C chief operator.

Can one operator run several package plants?

The rule sets minimums for each plant: a chief operator licensed at or above its category, operation five days a week and phone coverage seven days a week. Whether one person can meet all of that at every plant is a workload question to settle before you commit.

I'm developing a Texas subdivision with a 75,000 gallon per day extended aeration plant and a permit that limits phosphorus. What operator license do we need?

At that flow the plant starts as Category D. Section 30.350 does not define nutrient reduction, but phosphorus is a nutrient, so plan on Category C and a Class C chief operator, and confirm the classification with TCEQ.

I'm a project manager for a Texas developer whose plant starts up in six months, and we have no operator yet. What should we do first?

Confirm the plant's category, then line up a registered operations company or licensed operator at that level. Get them into the O&M manual and startup plan now, and assign every sampling and reporting duty in writing.

Related resources

• Ongoing Compliance After Permit Approval: What a Developer-Operator Needs to Track
• Decentralized Wastewater Clusters: Designing Multiple Small Package Plants Across a Phased Development
• Emergency Bypass and Backup Power Requirements for Package Plants: What TCEQ Requires for Reliability During Outages
• Self Reporting Violations and TCEQ Enforcement Discretion: How Voluntary Disclosure Changes the Outcome of a Permit Exceedance

Planning operator coverage before your plant starts up?

We design package plants with the operator in mind and help owners have the O&M manual, startup plan and reporting duties ready before the plant receives flow.

We specialize in:

• Package wastewater treatment plant design
• O&M manuals prepared with the owner and operator
• Startup coordination between engineer, owner and operator
• TPDES and land application permit applications
• Construction administration for treatment plants

Modern Engineering Solutions, McKinney, Texas. Contact: (214) 833-6748 or mod-eng.com