Where Does Wastewater Go


Where Does Wastewater Go?

Baltimoreis an old city and so is its sanitary sewers system - many exceeding 100 years in service. Major capital investment is required to proactively maintain our system, to meet the demands of a growing regional population and to meet federal regulations mandating system upgrades.

Wastewater is water that has been used in homes, businesses or industry and carries dissolved and suspended solids. That wastewater is sent through a large network of sewer pipes to a treatment plant where contaminants are removed and the water is made clean enough to safely return to our natural waterways.

These sewer pipes are old, and older, cracked sewer lines allow storm water to infiltrate, causing sewage overflows, and that is a problem we must fix. As part of the City's Consent Decree Program, the Department of Public Works is on track to complete the necessary sanitary sewer upgrades to improve our system.

Quick Facts

  • We serve approximately 1.6 million customers.
  • We treat approximately 250 million gallons of wastewater daily.
  • There are approximately 1,400 miles of sewer pipes.
  • We manage 2 treatment facilities: Back River and Patapsco.
  • Current repairs are estimated at $1 billion dollars.

For more information, call 311 or email publicworks@baltimorecity.gov.