Illegal dumping in the City of Napa is prosecuted under California Penal Code §374.3 (mandatory $250-$1,000 fine for a first offense; up to $3,000 third) and the Napa County District Attorney's Consumer/Environmental Protection Unit (CEPU). Commercial-quantity dumping is a misdemeanor under §374.3(h) with up to six months jail and $1,000-$3,000 fines (up to $10,000 for repeat commercial offenders). California Vehicle Code §23112.7 authorizes up to six-month vehicle impound for repeat offenders. Reports go to City of Napa Code Enforcement, the city Stormwater Hotline, or the CEPU at (707) 253-4059.
Illegal-dumping enforcement in Napa is a joint effort: City of Napa Police, City Code Enforcement under Napa Municipal Code Chapter 8.16 (Public Nuisances) and Chapter 5.60 (Solid Waste), and the Napa County District Attorney's Consumer/Environmental Protection Unit (CEPU) under California Penal Code §374.3. CEPU investigates and prosecutes environmental crimes — including illegal dumping, dumping into bodies of water, hazardous-waste violations, and water-pollution cases — and generally proceeds in civil court for monetary penalties and injunctive relief, with criminal prosecution available in egregious cases. Section 374.3(a) makes it unlawful to dump or cause to be dumped any waste matter on any public or private highway, road, alley, park, beach, lake, or other property. Non-commercial dumping is an infraction with mandatory fines that escalate: $250-$1,000 first conviction, $500-$1,500 second, $750-$3,000 third or subsequent. Dumping waste in 'commercial quantities' (more than one cubic yard from a commercial vehicle, or any quantity from a business operation) is a misdemeanor under §374.3(h) punishable by up to six months in county jail plus $1,000-$3,000 fines on a first conviction, escalating to as much as $10,000 for repeat commercial offenders. California Vehicle Code §23112.7 separately authorizes the court to order a vehicle used in repeated illegal dumping impounded for up to six months. Dumping garbage within 150 feet of a waterway is also a misdemeanor under California Fish & Game Code §5650+. Reports go to City of Napa Code Enforcement, the city Stormwater Hotline (for waterway-adjacent dumping), or the Napa County DA CEPU Help Line at (707) 253-4059. Napa Police non-emergency dispatch handles active-dumping reports outside business hours. The City of Napa may also recover cleanup costs as a special assessment on the responsible parcel under NMC Chapter 8.16.
Non-commercial dumping: mandatory $250-$1,000 first, $500-$1,500 second, $750-$3,000 third (Cal. Penal Code §374.3). Commercial-quantity dumping: misdemeanor with up to 6 months jail plus $1,000-$3,000 fines, escalating to as much as $10,000 for repeat commercial offenders under §374.3(h). Dumping within 150 feet of a waterway is a separate misdemeanor under Cal. Fish & Game Code §5650+. Vehicle impound up to six months under Cal. Vehicle Code §23112.7 for repeat offenders. The Napa County DA's Consumer/Environmental Protection Unit prosecutes environmental crimes — typically in civil court for monetary penalties and injunctive relief — and may seek restitution for cleanup costs.
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