It’s illegal to let anything other than rainwater go down a storm drain. When it rains, everything that enters a storm drain goes to our local creeks, the Bay, and the Delta untreated. That’s why only rain should go down the drain. Mobile businesses – including food trucks, mobile cleaners, pet groomers, auto detailers, and more – must follow Best Management Practices (BMPs) to keep wash waters and wastes away from our streets and waterways.

Healthy creeks start with clean streets. What goes into the drain, flows into our rivers. Storm drains lead directly to local creeks, rivers, and the ocean, with no filters. Even small pollutants can harm fish, birds, and people.

image of a person hosing off their truck

While hosing, direct soap-free water into the landscaping. If water starts to pool on gravel surfaces this must be contained and collected.

image of a wet vacuum

Have proper water collection and storm drain blocking equipment on hand

image of a clipboard with a checklist

Train employees on BMPs and the proper use of equipment at the job site

image of an orange mat partially covering a storm drain inlet

Block off storm drains

image of a broom sweeping into a dustpan

Regularly sweep area to remove debris and sediment

Image of berms surrounding a wash area

Contain the wash area so that water does not flow into the street, gutter, or storm drain (use sandbags, mats, or berms)

image of a storm drain with a stencil that reads "No Dumping, Drains to Bay"

Wash water can be discharged to indoor floor drains, utility mop sinks, toilets, or sanitary sewer clean outs; these drains connect to the sanitary sewer

image of a water pump with flexible hosing

Use a pump and flexible hosing to discharge wash water to an indoor sanitary sewer drain

image of a bucket of water

Minimize water usage; collect contained wash water and dispose of it properly

image of a sanitary sewer connection and a nearby yellow bottle with a red "X" over the bottle

Disposal to the sanitary sewer must meet the sanitary districts discharge requirements and not contain hazardous materials (see contact list on back)

Image of a storm drain and its piping ultimately flowing to into a creek with fish