The goals of the Borough’s MS4 program are to reduce the discharge of pollutants into our waterways. The water that runs off your property and from the streets goes either into the ground and becomes groundwater or flows through a series of facilities such as swales and pipes to the waterways. If this water isn't cleaned, all the pollutants the water carries end up in the stream and ultimately into the Chesapeake Bay. You can help to keep our water clean by doing the following:

• Properly dispose of water from your property (rainwater, pool water, sump pumps, etc.)
• Clean up after your pets
• Use fertilizers, pesticides, and herbicides correctly
• Properly secure and store materials that could pollute stormwater

In addition, please monitor the stormwater facilities that you see or live near. If you see something that looks wrong or that is causing these facilities to be polluted or blocked, please fill out the ILLICIT DISCHARGE REPORT FORM (PDF) and sent it to the Denver Borough Municipal Building or call the Municipal Building at 717-336-2831.

Examples of illicit discharges include:

• Sediment leaving a construction site during a storm or being carried out onto the public road
• Spills (Chemical, Gas, Oil)
• Illegal dumping activity into streams or stormwater facilities
• Dry weather flows from outfalls into streams (at least 72 hours after a storm)