How to Evaluate Wastewater Utility Options Before You Close on Land (Connect, Build, or Wait)

Who has the right to serve the site?

Start with the map, because the answer may already be decided. The Public Utility Commission of Texas explains that a certificate of convenience and necessity (CCN) gives a retail public utility the exclusive right to provide retail water and sewer service to a defined area. Investor-owned utilities and water supply corporations must hold one; cities and districts generally need one only to serve inside an existing CCN.

So the first step is to find the sewer CCN holder, or the city or district that serves the area, and ask them directly. If someone holds the right to serve your tract, that conversation comes before any plan to build.

When is connecting the right call?

When capacity is confirmed in writing and the route to it is buildable. A sewer line on a plat does not mean the pipes, lift stations and plant downstream can take your flow. A tap fee quote is not a capacity commitment either.

Ask for a written utility availability letter that addresses:

• collection system capacity at your projected flow;
• lift station capacity along the route;
• treatment plant capacity;
• who pays for any upgrades or extensions;
• the service terms, including any annexation or development agreement.

Some Texas cities tie service to annexation or an agreement. Since September 1, 2023, Senate Bill 2038 lets landowners or residents seek release of an area from a city's extraterritorial jurisdiction by petition or election, with exceptions. Treat ETJ status as a legal question and get your attorney's read before you rely on it.

What does building your own plant involve?

A TCEQ permit, a plant site and a lead time that belongs in the schedule from day one. For a domestic plant, that usually means a TPDES discharge permit or a Texas Land Application Permit (TLAP). TCEQ's domestic wastewater permitting page says to submit the application at least 330 days before the proposed discharge begins, and the process includes two published notices.

Building does not let you skip the connect question. TCEQ's regionalization guidance asks a new domestic applicant to contact permitted systems within three miles about capacity, and to compare the cost of connecting where one has it. A nearby system is not an automatic denial, but the application includes copies of that correspondence.

The plant also takes land. Under 30 TAC §309.13, a plant unit stays out of the 100-year floodplain unless protected and at least 150 feet from the property line, unless one of the rule's odor control alternatives applies. A TLAP adds the irrigation area and storage its water balance requires.

Is a 210E authorization a faster way to build?

Only when your waste streams fit it. A 210E is TCEQ's authorization to reuse industrial wastewater under 30 TAC Chapter 210, Subchapter E. TCEQ's training slides on industrial reuse authorizations estimate about 60 to 90 days from submittal for Level II. That is TCEQ's estimate, not a promise.

A development's sewage changes the picture. Industrial wastewater with any domestic wastewater in it is commingled, and §210.56(a)(1) puts it under the domestic reclaimed water rules. One of them, §210.2(e), says a reclaimed water producer must hold a TPDES permit, a TLAP or a Subchapter P authorization before building and running the treatment facility.

For a mixed-use project, confirm the path with TCEQ before you underwrite a schedule around it.

When does waiting make sense?

Only when the extension is committed, funded and scheduled in writing. A city's capital improvement plan is a plan, not a contract. Projects move when budgets, priorities or growth forecasts change.

Before you underwrite a wait, ask the utility whether the extension is designed, funded and scheduled, and get that answer in writing. Then model the case where it arrives two or three years late. If the deal cannot carry that, waiting is not a strategy. It is unpriced risk.

How do you choose before closing?

Work through these. Every no is a risk to price into the deal or resolve before closing.

1. Do you know who holds the right to serve the site?
2. Do you have a written capacity letter covering pipes, lift stations and plant?
3. If you would build, have you contacted permitted systems within three miles?
4. Does the schedule carry TCEQ's 330-day lead time for a discharge application?
5. Do you control land for the plant buffer and any irrigation area?
6. Do you know whether any stream is industrial, and how TCEQ treats it if sewage is mixed in?
7. If you plan to wait, is the extension funded and scheduled in writing?

Our site feasibility and due diligence work answers these before the option period ends.

This is general education on Texas rules and agency guidance as of October 2026, not legal advice or a prediction for your site. TCEQ, the PUC and your utility decide the actual path, so confirm with them and your engineer.

Frequently asked questions

What is the fastest wastewater path for a Texas development that cannot connect?

It depends on the waste streams and the land. TCEQ estimates about 60 to 90 days for a 210E Level II authorization, but a stream with sewage in it falls under the domestic reclaimed water rules. For a discharge permit, TCEQ says to apply at least 330 days ahead.

How do I confirm a municipal system has capacity to serve my project?

Ask for a written availability letter that covers collection, lift station and treatment capacity at your projected flow, and says who pays for upgrades. A connection fee estimate is not a capacity commitment.

I'm under contract on a tract in a Texas city's ETJ, and the city will only serve us if we annex. What are my options?

Compare the city's terms with a private plant's permit path and schedule, and with any other provider in a CCN. Ask your attorney whether the 2023 ETJ release law applies to your tract, since it has exceptions.

I'm a developer in Texas with a discharge permit application still in review. Can we switch to a reuse path partway through?

Ask TCEQ before you change course. Under §210.2(e), a reclaimed water producer must hold a TPDES permit, a TLAP or a Subchapter P authorization before building and running the treatment facility, so a reuse plan does not by itself replace the plant authorization. Switching from discharge to land application changes the application.

Related resources

• Building a Private WWTP in Texas: What Developers Need to Know Before They Commit
• What a Utility Feasibility Study Actually Tells You, and When to Get One
• The 330 Day Timeline: Why Texas Wastewater Permits Take Longer Than Developers Expect
• Why Your Texas Development Needs a Wastewater Engineer Before the Architect Signs Off

Weighing connect, build or wait on a Texas site before you close?

We check who can serve the site, what capacity exists, and what a private plant would take to permit and site, so the purchase price reflects the wastewater answer.

We specialize in:

• Site feasibility and due diligence
• Sewer capacity and extension reviews
• Wastewater permit pathway reviews
• TPDES, TLAP and 210E applications
• Private wastewater treatment plant design
• Lift station and force main design

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