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General Permit TXR040000 for Phase II (Small) MS4s

Requirements for obtaining authorization for stormwater discharges from small MS4s, the new General Permit, forms and annual reporting.

Hot TopicThe TCEQ Is Renewing the General Permit for Small MS4s.

The TCEQ is in the process of renewing the 2013 TPDES general permit for small MS4s, TXR040000, which expires on December 13, 2018.The draft permit and fact sheet are now scheduled for adoption by the Commission on January 16, 2019.

The 30 day public review and comment period on the proposed general permit and fact sheet ended on September 24, 2018. A public meeting was held to provide the public an opportunity to submit comments and to ask questions about the proposed general permit.
Please find the proposed draft permit and fact sheet that was available for public comments here:

TCEQ received a total of 33 combined comments from 11 commenters. Responses to those comments resulted in minor revisions to the proposed general permit. The comments will be available in the Response to Comments (RTC) document that will be issued along with the general permit and fact sheet. The general permit is scheduled on the Commission’s January 16, 2019 Agenda for adoption. An effective date of the general permit is expected one to two weeks later.


  • After the current general permit expires on December 13, 2018 permittees will continue to operate under their current authorizations until issuance of the renewed general permit.
  • Annual reports will be submitted at regular schedules unaffected by the general permit issuance, unless the permittee request a change in annual reporting schedules.
  • After the general permit has been issued permittee have 180 days to submit a Notice of Intent (NOI) with an updated Stormwater Management Program (SWMP), or a Waiver application.

Stormwater Stakeholders Group webpage

2013 General Permit for Small MS4s

The Small MS4 General Permit, TPDES Permit No. TXR040000, was issued on December 13, 2013. It authorizes the discharge of stormwater to surface water in the state from small municipal separate storm sewer systems (MS4s).

For specific information on the permit requirements, please refer to the following documents:

For additional information see the Assistance Tools for Stormwater Permitting page or the Q&A document on the general permit.

If you would like to follow the process of renewing this permit, please access historical information at the Stormwater Stakeholders Group (SWSG) webpage.

Strengthening the protective elements of your permit

TCEQ utilized the U.S. EPA MS4 Permit Improvement Guide Adobe Acrobat PDF Document Exit the TCEQ(adopted April 14, 2010) during the 2013 permit renewal process and includes specific recommendations from this guide in your permit.

Annual Reports

All existing regulated MS4 entities are required to submit annual reports each year of the permit term.

The deadline or the reporting month for submitting annual reports for the general permit is based on the reporting period selected in the NOI submitted to TCEQ to obtain permit coverage.


2007 TPDES General Permit TXR040000

Contact us if you have any questions about this general permit.