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Illicit Discharge

What is an Illicit Discharge?

An illicit discharge is defined as any discharge to the municipal separate storm sewer system that is not composed entirely of storm water, except for discharges allowed under the City's Stormwater Discharge Permit, such as waters used for firefighting operations. Illicit discharges are a problem because, unlike wastewater which is collected in the sewer and flows to the City's wastewater treatment plant, stormwater is collected in a separate system and flows to the Napa River without any additional treatment. Illicit discharges often include pathogens, nutrients, surfactants, and various toxic pollutants that damage local waterways and wildlife. 

Visit the Pollution Prevention page to learn more about pollution prevention and steps you can take to keep creeks and rivers clean. 

Reporting an Illicit Discharge

If you see an illegal dumping to a stormdrain, river or creek, within 24 hours  please contact:

Tobias Barr, Public Works Project Manager

707-968-2746 (office), 707-312-1143 (cell)

If you witness the dumping of hazardous waste, dial 911