What is the Water Pollution Control Plant (WPCP)?
A1. The WPCP is a facility that treats 30 million gallons of wastewater daily from Arlington County residences and businesses. Approximately 20 percent of our flow comes from neighboring communities including, Alexandria, Fairfax, and Falls Church. It is the mission of the WPCP to safely and economically process wastewater and hazardous waste materials for a healthy environment for all to live.