Storm Water Management

Old Stone Dam
Storm drains are separate from the sanitary sewer system and polluted waters flow directly into local creeks waterways. To protect the quality of our streams and public health, report illicit discharges. Anything entering the storm sewer system that is not 100% storm water is an illicit discharge and is expressly prohibited from entering the system by the City of Allen. 

24-Hour Reporting Hotline

To report illegal trash and debris dumping, please visit the Code Compliance page. 

  1. Illicit Discharge
  2. concerns
  3. stormwater education
  4. Prevention

Common Illicit Discharge Violations

  • Chlorinated backwash and draining associated with swimming pools
  • Commercial car wash
  • Contaminated foundation drains
  • Cooling water unless no chemicals added or has TPDES permit
  • Fertilizers, pesticides, lawn/landscape waste
  • Household toxins
  • Industrial discharges
  • Oil, anti-freeze, paint, cleaning fluids
  • Sanitary sewer discharges
  • Septic tank discharges
  • Wash waters from commercial/industrial activities
  • Washing machine discharges

Reporting Illicit Discharges

When reporting Illicit Discharges, include the following information:

  • Date and time of the violation
  • Description of what is being discharged into the storm system
  • License plate number and description of the offending vehicle (if applicable)
  • Personal description of the violator
  • Specific street location within the city
  • Your name and telephone number (helpful to investigate and prosecute and you can remain anonymous)