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Questions or Comments: TexasEnviroHelp@tceq.texas.gov

Assistance Tools for Municipal Separate Storm Sewer Systems (MS4s)

Maps, forms, information on stormwater programs, and more resources for small businesses and local governments regarding municipal separate storm sewer systems (MS4s).

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.

Resources for MS4s

Maps for Stormwater Permitting

Forms for MS4s

Stormwater Programs

EPA Stormwater Resources

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

Phase I MS4s in Texas

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

More Help

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