ALEXANDRIA, Va. (ABC7) — When it rains in Alexandria, it can literally pour millions of gallons of raw sewage into the Potomac River.
That because in areas of Alexandria, mainly Old Town, the sewer system dates back to the 1800s and combines both sewage and rainwater. When it's not raining, the pipes carry sewage to the Alexandria Renew Enterprises water treatment plant nearby.
When it rains, however, those pipes carry both sewage and rainwater, and often those pipes reach their capacity and dump rainwater mixed with sewage into the Potomac via four discharge points, also called "outfalls."
Now, that's about to change.