>> Questions or Comments: TexasEnviroHelp@tceq.texas.gov
You are here:

Assistance Tools for Municipal Separate Storm Sewer Systems (MS4s)

Resources for small businesses and local governments regarding municipal separate storm sewer systems (MS4s).

Municipal separate storm sewer systems (MS4s) consist of a conveyance or system of conveyances, including roads with drainage systems, streets, catch basins, curbs, gutters, ditches, human-made channels, or storm drains. The following resources are provided to assist the regulated community in meeting permit requirements.

Tools

Maps

  • Interactive Map of Urbanized Areas - Determine if your Municipal Separate Storm Sewer System (MS4) is in an urbanized area and required to obtain stormwater permit coverage.
  • Urbanized Area Maps Exit the TCEQ
  • Surface Water Quality (Segments) Viewer - Using this interactive map viewer, users can view stream segments and water bodies monitored by TCEQ. Users can also select a particular segment or water body to view additional information such as segment name, ID number, description, and impairment status.

Forms

  • Notice of Intent (NOI) for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4) under the TPDES Phase II MS4 General Permit (TXR040000) (TCEQ Form 20368) - Download in Word

  • Waiver for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (MS4) under the TPDES Phase II MS4 General Permit (TXR040000) (TCEQ Form 20369) - Download in Word

  • Phase II (Small) MS4 Annual Report Form 2013 TPDES General Permit No. TXR040000 (TCEQ Form 20561a) - Download in Word

If your small MS4 chose the calendar or permit year as their reporting year, use the Phase II (Small) MS4 Annual Report Form 2013 TPDES General Permit No. TXR040000 (TCEQ Form 20561a) to report for 2018.

  • Phase II (Small) MS4 Annual Report Form 2019 TPDES General Permit No. TXR040000 (TCEQ Form 20561) - Download in Word

If your small MS4 chose their fiscal year as their reporting year, use the Phase II (Small) MS4 Annual Report Form 2019 TPDES General Permit No. TXR040000 (TCEQ Form 20561).

Note: 2019 fiscal year annual reports include months covered under the expired 2013 general permit and the newly issued 2019 general permit. Submit Oct. 1, 2018 – Sep. 30, 2019 as one annual report.

Links

U.S. Environmental Protection Agency

The following links take you off the TCEQ website (Exit the TCEQ). If you encounter an inactive (broken) link, please send an e-mail to  and indicate which link was broken.

Phase I MS4s in Texas

Where can I find more information and assistance?

The TCEQ's Small Business and Local Government Assistance Section offers free, confidential help to small businesses and local governments working to comply with state environmental regulations. Call us at 800-447-2827 or visit our webpage at TexasEnviroHelp.org.

Click to jump to top of page