Water Pollution Control Plant

3402 S. Glebe Road Arlington, VA 22202

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Parking: With few exceptions, the WPCP is closed to the general public. Free parking is available for those conducting business onsite including group tours.

Access via Gate 8 off South Glebe Road

General Information: 703-228-6820

Learn more about treating wastewater      Learn more about the Wastewater Pretreatment Program

About the WPCP

Located in south Arlington, the Water Pollution Control Plant treats 23 million gallons of wastewater each day from residences and businesses, with nearly 20% of the plant’s flow coming from neighboring localities Alexandria, Fairfax and Falls Church. The plant’s mission is to safely and economically process wastewater and hazardous waste materials to protect the environment: especially Four Mile Run, the Potomac River and the Chesapeake Bay. Read the plant’s core values.

Group Tours of the WPCP

Scheduling a free WPCP public group tour—for a minimum of five and maximum of 20 people—may take up to four weeks for processing. 

Tours are conducted March through June and again from September through December, Monday through Friday, 9-11 a.m. or 1-3 p.m. Due to safety concerns in extreme weather, tours are not conducted in January, February, July and August.

The Water Pollution Control Plant tour is two hours long: first hour in the classroom followed by an hour-long guided walk.

Request a Tour