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Environmental Services

                                    Drainage Maintenance and Improvement 


Drainage Concerns on Your Property
Our primary responsibility is to maintain and repair drainage systems located within County drainage easements.  Occasionally, we receive requests for assistance with drainage systems outside of a County easement. We stand ready to provide the community with assistance or guidance for these problems as well.  You can also take steps to help prevent or minimize drainage problems. 
Most drainage systems consist of catch basins or yard inlets which intercept storm water runoff and carry the water off through a pipe system. These pipes direct the flow into ponds, streams, and rivers.
All storm water runoff in Prince William County eventually flows into the Chesapeake Bay.
Typically, homeowners will only see the portions of drainage structures located above the ground such as concrete inlets with openings either in the top or the sides and occasionally ends of pipes (known as outfalls) near drainage ditches. Once water enters these surface structures, it is carried underground through a system of pipes. 
Contact Environmental Services at 703-792-7070 if a County drainage easement is blocked, in need of repair, or if it does not seem to be functioning normally.
Homeowners are responsible for maintaining drainage systems the homeowner installs on their private property, as well as man-made ponds, fountains, and generally any drainage improvements which are not located within County drainage easements.
 Call 911 if there is a flooding emergency!
Drainage Concerns outside Your Property 
 The Virginia Department of Transportation (VDOT) maintains all storm inlets located within a state maintained road's right-of-way. Typically, VDOT takes care of ditches and driveway culverts located along state maintained roadways. If you are unsure about the problem area, please call Environmental Services at 703-792-7070 and we can assist you. VDOT can be reached at 800-FOR-ROAD (800-367-7623).

The Prince William County Service Authority or the Dale Service Corporation (in Dale City) is responsible for the sanitary sewer systems.   Prince William County Service Authority can be reached at 703-335-7900 and Dale Service Corporation can be reached at 703-590-4495.

Erosion and Sediment Concerns on Your Property

If you notice erosion issues around a storm drain easement or system, please report the problem to Environmental Services at 703-792-7070.  Bare or eroding soil can cause sediment and debris to wash into these drainage systems which then become clogged or blocked. Erosion and sediment concerns on private property outside of a County drainage easement is generally the responsibility of the property owner.
Hazardous Trees 
Dead or dying trees located within County drainage easements will be removed according to our guidelines. If the tree is in the storm drain easement, please contact Environmental Services at 703-792-7070.  If you see a tree that may fall or has fallen in the roadway, please contact the Virginia Department of Transportation at 
800-FOR-ROAD (800-367-7623).  

Storm Water Management Ponds

Storm water management ponds help to control storm water runoff from roadways and paved surfaces, as well as allow for debris and sediment to settle out.  Storm water ponds allow water to flow more naturally and slowly into local streams and creeks.   

Generally, the County maintains certain storm water management ponds in residential areas.  Staff ensures ponds are functioning properly and safely through regular inspections and maintenance.  Property owners are expected to keep the area in and around the pond mowed, free of trash / debris, and readily accessible for staff to enter the area to inspect the pond.  Owners should call the County at 703-792-7070.

Other ponds such as those in commercial areas are maintained by the property owner.  Owners are expected to ensure the pond is functioning properly and safely.  The county offers guidance to property owners to ensure ponds are functioning properly.  The County will regularly inspect these ponds for compliance with state and federal requirements. 


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