Illicit Discharges


What is an Illicit Discharge


An illicit discharge is any discharge into a storm drain system that is not composed entirely of stormwater. The exceptions include water from firefighting activities and discharges from facilities already under a National Pollutnat Discharge Elimination Systems (NPDES) permit.


Why Protecting Stormwater from Illicit Discharges is Important


Stormwater flows to waterways without any additional treatment. Illicit discharges often include pathogens, nutrients, surfactants, and various toxic pollutants.


Allowable discharges by our MS4 Permit


  • Water line flushing (excluding discharges of hyper-chlorinated water, unless the water is first de-chlorinated and discharges are not expected to adversely affect aquatic life) 
  • Runoff or return flow from landscape irrigation, lawn irrigation, and other irrigation utilizing potable water, groundwater, or surface water sources 
  • Discharges from potable water sources
  • Diverted stream flows
  • Rising groundwater and springs
  • Uncontaminated groundwater infiltration 
  • Uncontaminated pumped groundwater 
  • Foundation and foot drains
  • Air conditioning condensation 
  • Water from crawl space pumps 
  • Individual residential vehicle washing 
  • Flows from wetlands and riparian habitats 
  • De-chlorinated swimming pool discharges 
  • Street wash water
  • Discharges or flows from firefighting activities (firefighting activities do not include washing of trucks, run-off water from training activities, test water from fire suppression systems, and similar activities)


If the discharge does not fall into any of the above categories, please contact Anthony Valchar with Public Works at 512-844-5281


Reporting Illicit Discharges


If someone is dumping liquids or trash into a storm drain or if you see an illicit discharge, please contact the City of Manor Public Works Department at 512-272-5555


Reporting Illegal Dumping


Illegal dumping can also affect our stormwater. Please report any illegal dumping to the City of Manor Police Department at 512-272-8177


The City of Manor Strives to promote Community spirit through the preservation of our unique character and heritage, while fostering a dynamic economic environment.

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