Wastewater Disposal by Evaporation: Obtaining Coverage Under General Permit WQG100000

TCEQ renewed General Permit No. WQG100000, with an effective date of September 15, 2025. Existing permittees must submit an NOI under the reissued permit within 90 days of the effective date to maintain coverage.

2025 Renewal documents:

• WQG10 Issued Permit
• WQG10 Fact Sheet
• WQG10 Public Notice (English)
• WQG10 Public Notice (Spanish)

The following steps will help you determine if you qualify for coverage under the Wastewater Evaporation General Permit Number WQG100000.

Step 1.

Read the General Permit WQG100000 and the Fact Sheet to make sure it applies to your situation. 

• If the general permit does not apply, you might need to obtain an individual permit.
• If the general permit does apply, continue with Step 2.

This general permit does not authorize land application of wastewater adjacent to water in the state or discharge of wastewater into water in the state.

Step 2.

Review your facility’s compliance history ranking:

• If your facility has a ranking of “high performer,” “satisfactory performer,” or "inadequate information," continue to Step 3.
• If the compliance history ranking is “unsatisfactory performer,” you must apply for an individual permit instead.

Step 3.

To apply for coverage under this general permit, submit a notification package, which includes:

• A Notice of Intent (NOI) and
• A Core Data Form (TCEQ-10400) - Instructions to Fill Core Data Form

• Mail the completed notification package to:
  Applications Review and Processing Team MC 148
  Texas Commission on Environmental Quality
  P.O. Box 13087
  Austin, Texas 78711-3087

• Submit an application fee ($100) to:

  Pay online by ePay
  
  Or

  Mail to:
  Financial Administrative Division, Revenue Section MC 214
  Texas Commission on Environmental Quality
  P.O. Box 13088
  Austin TX 78711-3088

Step 4.

If you qualify for coverage under this general permit but would rather have an individual permit, you may request that coverage instead.

Provisional coverage under this general permit begins 48 hours (about 2 days) after the NOI is postmarked for delivery to the Texas Commission on Environmental Quality.

We will review the NOI and will take one of the following actions:

• If everything is acceptable, we will send you an acknowledgment letter to authorize your coverage.
• If any information is incomplete or missing, we will send you a letter requesting the necessary information. You will have 30 days (about a month) to respond to this request.
• If coverage has been denied, we will send you a denial letter.

You must keep a copy of the NOI and the acknowledgement certificate onsite.

Step 5.

After obtaining coverage under the general permit you must:

• Adhere to the requirements of the general permit.
• Pay the annual fee within 30 days of receipt of the invoice.
• Submit a Notice of Change(NOC) if you, as the owner or operator, become aware that you failed to submit any relevant facts, submitted incorrect information, or if previously submitted information has changed.
• Submit a Notice of Termination (NOT) when all discharges authorized by the permit are eliminated, completed, or if the operator or owner changes.

Annual Fees:

Permit coverage will remain active until Notice of Termination is submitted. If your coverage is active September 1 of any given year, you will owe a water quality fee of $1,250 for that year. An invoice for the annual fees will be mailed each year to the billing contact identified in your application.

If you have questions, please see our Contact Page.

Related content:
Wastewater Evaporation Ponds: Am I Regulated?