Best Management Practices
Public Education / Involvement
Illicit Discharge Detect / Elimin
Constr Site SW Runoff Control
Post-Construction SW Mgmt
Poll Prevent / Good Housekeep
Municipal Constr Activities
Activities for Kids
Illicit Discharge Detection and Elimination

Best Management Practices (BMP's) in this category are designed to eliminate substances other than stormwater from entering the City's storm drainage system.  Our storm drain system is designed to carry stormwater only and it is a violation of City Ordinance to put any other substances in the storm drains.

Tyler's Stormwater Management Program contains ten (10) BMP's in the Illicit Discharge Detection and Elimination category including:


  • ID-1 : Storm Drain System Map Maintenance
  • ID-2 : Dry Weather Screening
  • ID-3 : Illicit Discharge Investigations
  • ID-4 : Illicit Discharge Ordinance
  • ID-5 : Reduce Sanitary Sewer Overflows
  • ID-6 : Household Chemical Disposal / Solid Waste Collection Events
  • ID-7 : Reduce Illegal Dumping
  • ID-8 : Reduce Failing Septic Systems
  • ID-9 : Illicit Discharge Training
  • ID-10 : Pet Waste Management

Things that commonly make their way into the storm drain, either accidentally or deliberately, are automotive fluids such as used motor oil and antifreeze, paint, grass clippings, tree limbs, and trash.  Sometimes plumbing is improperly connected to the storm drain system which allows sanitary waste, grey water, or industrial wastewater to enter the storm drain system.  These are more common in the older areas of Tyler.  The discharge of water from these sources can be very damaging to streams and lakes and can lead to fish kills. If discharged to lakes used as a drinking water source or for recreation, these discharges can also be harmful to humans and can spread diseases.  For these reasons, the City is aggressively implementing BMP's to detect and eliminate illegal discharges.

Illicit discharge into storm inlet