Concord prohibits all illicit discharges to the storm drain system under CMC Title 8 and MRP NPDES Permit R2-2022-0118. Violators face administrative fines starting at $100 and escalating to $1,000+ per day, plus full cleanup cost recovery.
An illicit discharge is any discharge to the Municipal Separate Storm Sewer System (MS4) that is not composed entirely of stormwater. Under Concord Municipal Code Title 8 and Provision C.5 of the San Francisco Bay MRP (Order R2-2022-0118), it is unlawful to discharge, dump, or allow to enter the storm drain: sewage, industrial wastewater, washwater, paint, solvents, motor oil, antifreeze, concrete slurry, pesticides, pool chlorine, pet waste, sediment from construction, landscape chemicals, and food waste. Exempt discharges include natural groundwater, rising springs, individual residential car washing with minimal runoff, non-emergency firefighting flows, and air-conditioning condensate. The Contra Costa Clean Water Program (CCCWP) operates a 24-hour spill/complaint hotline. Concord Code Enforcement, Public Works, and Fire respond to reported discharges. Violators are subject to administrative fines ($100 first offense, doubling for repeats, up to $5,000/day under CA Water Code), mandatory cleanup, and potential referral to the Regional Water Board for civil penalties up to $25,000 per day under the Clean Water Act. Businesses with ongoing compliance issues may be required to submit a Stormwater Pollution Prevention Plan (SWPPP).
Contact your local code enforcement office for specific penalty information.
Concord, CA
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