The City of Rockwall is a small Municipal Separate Storm Sewer System (MS4) operator that is located within an urbanized area and is eligible for coverage under Texas Pollutant Discharge Elimination System (TPDES) General Permit No. TXR040000. Under the authority of the Environmental Protection Agencies Clean Water Act a storm water permitting program was developed.

The population served within the City of Rockwall urbanized area is under 40,000 based on 2010 Census data, therefore the City is categorized as a Level 2 MS4 Operator.

Stormwater Management Program (SWMP)
A SWMP has been developed and is being implemented according to the requirements of Part III of TPDES General Permit No. TXR040000, for storm water discharges that reach waters of the United States.  The SWMP was developed to prevent pollution in storm water to the maximum extent practicable (MEP) and effectively prohibit illicit discharges to the system.  As required by the TPDES General Permit, the specific activities to be implemented in this SWMP include the following Minimum Control Measures (MCMs):

  1. Public Education, Outreach and Involvement
  2. Illicit Discharge Detection and Elimination (IDDE)
  3. Construction Site Storm Water Runoff Control
  4. Post-Construction Storm Water Management in New Development and Re-Development
  5. Pollution Prevention and Good Housekeeping for Municipal Operations

City of Rockwall Storm Water Management Program
Stormwater Management Ordinance 18-15
2014 Annual Report
2015 Annual Report
2016 Annual Report
2017 Annual Report
2018 Annual Report


Report Illicit Discharges
To report an illicit discharge in to the City of Rockwall’s Waterways please make a service request.  Service requests may be submitted online through the department’s webpage or by calling Customer Service at (972) 772-6791

Click here to submit your request 

Common Illicit Discharge Violations
Allowable Non-Storm Water Discharges