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Small business plays a key role in pollution prevention. Discharge of any substance other than rainwater into storm drains is prohibited in California. While not regulated, small businesses have a responsibility to comply with State and EPA guidelines and may be inspected by their municipality to ensure compliance. Potential areas of concern are drainage, storage, toxic chemicals, management of trash and waste products, pesticides and spills into the stormwater system. Learn how you can protect our water.

Provisions C.4 and C.5 in the MRP 2.0 require businesses to use best management practices minimize non-stormwater discharges (discharges of anything but rain water to the storm drains) and prevent illicit discharges, like soapy wash water, that can harm water quality. 

The Contra Costa Clean Water Program has developed brochures detailing best management practices (BMPs) for the following types of businesses: