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 Illicit Discharge
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Round Rock's illicit discharge ordinance to protect water quality

The City of Round Rock adopted an Illicit Discharge 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. Information is provided below that explains how the ordinance and the MS4 permit affects businesses. 

Contrary to popular belief, storm water that flows down driveways and streets into storm drains is not treated or filtered. Any pollutants 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 storm water 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.

To report a suspected illicit discharge, please contact stormwater staff or call 218-7046.

Common sources of illicit discharges

  • Sanitary Wastewater
  • Household Cleansers
  • Pesticides
  • Chlorinated Pool Water
  • Motor Oil
  • Paints
  • Weed Killers
  • Laundry Wastewater

Failure to remedy an illicit discharge following a notice can 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 218-5559.

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 an avoid application when rain is forecast.
  • Pick up pet waste and dispose of it properly to keep bacteria and parasites out of our creeks.

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City of Round Rock | 221 East Main Street, Round Rock, Texas 78664 | Phone: (512) 218-5400
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