210E Authorization Compliance: Why “No Expiration” Doesn’t Mean No Deadlines for Texas Developers

What is a 210E authorization, and does it expire?

It is TCEQ's approval to reuse treated industrial wastewater under 30 TAC Chapter 210, Subchapter E, and the rule sets no term for it. "210E" is TCEQ's own shorthand. Its permitting staff use it in their training slides on beneficial reuse authorizations for treated industrial wastewater.

Subchapter E has two levels:

• Level I covers listed on-site streams such as condensate, non-contact cooling water and filter backwash. TCEQ's slides list no application, no notification and no expiration date.
• Level II needs an application and written authorization before reuse starts. Under §210.53(b), it applies when, among other cases, the water exceeds the Table 1 thresholds, contains any amount of domestic wastewater, or is used off site.

That domestic wastewater trigger is why a mixed-use development that adds its sewage to an industrial stream ends up on Level II. Neither level has a renewal cycle, while a TPDES discharge permit runs no more than five years under 30 TAC §305.127. Our overview of 210E authorizations covers whether reuse fits a site.

Why does "no expiration" get misread as "no obligation"?

A renewal date is a reminder, and a 210E authorization does not have one. Without it, the authorization sits in a file while the site changes around it. Flow grows as a development builds out. A contract operator leaves and sampling lapses. A later building takes part of the irrigated area.

None of that pauses because the paperwork has no end date. It surfaces later, in a TCEQ inspection, a complaint review or a buyer's due diligence.

What sampling does a Level II authorization require?

The default limits in §210.56(d) are total organic carbon of 55 mg/L, sampled monthly by grab, and pH between 6.0 and 9.0, sampled weekly by grab. The executive director may add limits or raise the frequency in your authorization, so read the letter, not just the rule.

Under §210.57(b)(1), the producer samples after final treatment and before the water goes to a provider or user. Sampling is required only in periods when reuse happens.

If a result exceeds a limit, the water may not be reused. It goes to the disposal method unless more treatment brings it within limits.

Commingled water carries more. §210.56(a)(1) also puts it under Subchapters A to C: the reclaimed water quality standards, sampling twice a week for Type I uses or weekly for Type II (§210.34), and monthly reports due by the 20th (§210.36).

What records does a 210E authorization require you to keep?

Five years of monitoring records and a daily irrigation log, ready for inspection. Under §210.57(b)(2), each monitoring record shows the date, time and place of the sample, who took it, the analysis date, the laboratory and analyst, the method and the result. The producer also keeps a record of every notification sent to TCEQ.

The user keeps an operating log of the volume used for irrigation each day and the surface area actually wetted each day, also for five years. Commingled systems add the §210.36 records, including volumes delivered.

Missing records look the same as missing work. When a buyer's engineer asks for five years of results and logs during a sale, a gap cannot be explained away.

Which changes need TCEQ approval before you make them?

Any change to the approved use. TCEQ's reclaimed water guidance says the agency must approve any changes to a use that has already been approved. TCEQ's application, Form TCEQ-20094, offers an amendment of an existing reuse authorization, whose number begins with "2E".

Your application described the volume, frequency, end use and use site (§210.55(b)). The usual triggers are departures from it:

• daily flow above the volume the application stated, often from a new phase;
• a smaller or relocated irrigation area after an easement, a road or a later building;
• use off site, which adds the notification and responsibility rules in §§210.4, 210.6, 210.7 and 210.25 (§210.56(i));
• a new storage pond, which needs a liner certification under §210.23 and two feet of freeboard (§210.56(g));
• a new water well near the irrigated area, since the water may not be applied within 250 feet of a private well or 500 feet of a public supply well (§210.56(f)(4)).

For commingled systems, §210.4(e) also lists major changes that need executive director approval. They include a change in the service area boundary, the addition of a new producer and a switch between Type I and Type II uses.

What happens to a 210E authorization when the property sells?

Confirm it with TCEQ before closing, because Subchapter E has no transfer section of its own. A TPDES permit has a formal transfer rule, covered in our post on discharge permit transfers during a property sale. A 210E authorization does not, so do not assume the deed carries it.

The application names the producer, provider and user by legal name. When one of them changes, ask TCEQ whether that needs an amendment or a new authorization. For a commingled system, a new plant owner may be the "new producer" that §210.4(e) treats as a major change. Under §210.59(c), TCEQ also weighs compliance history before approving any Level II authorization.

What can TCEQ do if the system drifts from its authorization?

Suspend it, and require a permit instead. Under §210.59(b), the executive director may suspend an authorization when the quantity used, the type of waste or the type of operation does not comply with Chapter 210, and may require an individual permit. §210.54(b) sends a producer who does not carry out every required condition to permit coverage.

Unauthorized use has its own clock. Under §210.6, the producer and provider notify the executive director in writing within five days of learning of a use the approval does not cover.

How do you build a compliance routine without a renewal date?

Put your own review on the calendar, and compare the site to the authorization, not to last year. A yearly check catches drift while it is still an amendment. Every answer below should be yes. Any no is something to fix, or to take to TCEQ, before someone else finds it.

1. Do you have a sample result for every period in which reuse happened?
2. Are five years of monitoring records and the daily irrigation log complete?
3. Is today's daily flow within the volume your application stated?
4. Is the irrigated area the one TCEQ approved, with the well buffers intact?
5. Are the producer, provider and user still the entities named in the authorization?
6. Is the operator who pulls your samples under contract today, with no gap since the last one left?

Operator turnover feels like a vendor change, but a handoff gap is a sampling gap. Our post on package plant operator staffing covers what certification level a plant may need.

This is general education on 30 TAC Chapter 210 as published in October 2026, not advice on your system. Your authorization may add conditions, and TCEQ decides how a change is handled, so check the current rule and your own authorization with your engineer.

Frequently asked questions

Does a 210E authorization ever expire?

Subchapter E sets no term or renewal for either level, and TCEQ's slides list no expiration date for Level I. Check your own authorization for added conditions. The duties last as long as you reuse the water.

I own a mixed-use development in Hays County with a 210E Level II system, and our next phase will raise daily flow. Do I tell TCEQ before the new homes connect?

Plan on it. TCEQ must approve changes to an approved use, and the reuse volume is part of your application. Ask about an amendment as soon as the phase is planned, so the review does not collide with construction.

I'm buying a Texas business park that already irrigates under a 210E authorization. What should I ask the seller for before closing?

Ask for the authorization and any amendments, five years of sample results and irrigation logs, notifications sent to TCEQ, the agreement behind the disposal method and any pond liner certification. Then ask TCEQ how the change in producer or user is handled, before the closing date.

What happens if a 210E sample exceeds the limit?

Stop reusing that water. Under §210.57(b)(1)(B), the producer sends it to the disposal method instead, or treats it further and reuses it only once it meets the limits.

Related resources

• The Design Mistake That Turns a 210E Authorization Into a TCEQ Violation
• What TCEQ's 30 TAC Chapter 210 Actually Requires for Effluent Quality Under a 210E Authorization
• Ongoing Compliance After Permit Approval: What a Developer-Operator Needs to Track
• Getting a Discharge Permit as a Backup After Your 210E Is Operational

Not sure your 210E system still matches its authorization?

We compare the site, the flows and the records against the authorization TCEQ issued, and help you take any change back to TCEQ before it becomes an enforcement issue.

We specialize in:

• 210E and Chapter 210 reuse authorizations
• TCEQ wastewater permitting
• Reuse area and storage design
• Wastewater treatment and reuse system design
• Due diligence for land with an existing system
• Construction administration

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