Illicit Discharge


The City of Round Rock adopted an Illicit DischaSW dumping-drainrge Ordinance on March 11, 2010, to protect local water quality and to comply with the City’s MS4 permit issued by TCEQ and the EPA’s Clean Water Act.

Contrary to popular belief, stormwater that flows down driveways and streets into storm drains is not treated or filtered. Any pollutants poured or placed in a storm drain or picked up along the way are carried to the nearest body of water during the next rainfall.

An illicit discharge is any discharge that is not composed entirely of stormwater with a few exceptions. The following discharges are not considered illicit discharges: dechlorinated swimming pool discharges, residential car washing, and discharges of fire protection water.

Report an Illicit Discharge
To report a suspected illicit discharge, please contact stormwater staff or call 512-218-7046.

Common sources of illicit discharges
• Sanitary Wastewater
• Household Cleaners
• Pesticides
• Chlorinated Pool Water
• Motor Oil
• Paints
• Weed Killers
• Laundry Wastewater

Failure to remedy an illicit discharge following a City notice may result in remediation costs and fines of $500 to $2000 per day. For information on the Drop-Off Recycling Center or the Household Hazardous Collection events, please contact the Environmental Services Division at 512-218-5554.

How Can You Help?
• Never sweep or blow leaves into a storm drain. Bag it and bring it to the recycling center.
• Take used oil to a certified used oil collection center or to a household hazardous waste event.
• Follow directions on pesticides and fertilizers and avoid application when rain is forecast.
• Pick up pet waste and dispose of it properly to keep bacteria and parasites out of our creeks.