Skip to main content
  • Baltimore City Department of Public Works logo
    Baltimore City Department of Public Works
  • Citywide
  • Search
Close
  • 311 Services
  • Payments
  • Mayor's Office
  • News
  • Directory
  • Events
Subscribe
English Arabic Chinese (Simplified) Chinese (Traditional) French Korean Spanish

DPW Logo

Baltimore City Department of Public Works

MenuShow Filters

You are here

  • Home
  • Wastewater

We’re launching a new website for Baltimore City!
Check out the new beta site and share your feedback.

Our website will undergo scheduled maintenance on February 5th, 2026 from 12:30am EST for approximately two hours. During this period, the website may be unavailable. We apologize for any inconvenience and appreciate your understanding.

Keep up to date on the latest winter weather information.
Baltimore City Snow Center.

Wastewater

  • Two Wastewater Treatment Plants: Back River and Patapsco
     
  • There are 3,100 miles of sanitary mains in the whole system. We maintain the 1,400 miles in Baltimore City.
     
  •  Collects and treats an average flow of 200 million gallons of wastewater daily (Back River design flow 180 MGD; average flow 132 MGD. Patapsco design flow 73 MGD; average flow 63 MGD).
     
  • Operates eight (8) major wastewater pumping stations and 10 (ten) minor installations
Close

Main Menu

  • About Us
  • Your New Water Bill
  • Paperless Water Billing Program
  • Water Billing Information and Assistance
  • Water & Sewer Rate Changes
  • NEW! Water4All Discount Program
  • NEW! PromisePay Payment Plans
  • Interactive Maps
  • Recycling Services
  • Zero Waste Coalition
  • Construction Projects in my Community
  • Waste Water Consent Decree
  • Sanitary Sewer Consent Decree Program (Basement Backup)
  • Less Waste Master Plan
  • Cleaning & Greening Services
  • Your Water
  • Wastewater
    • About Wastewater
    • History of Wastewater Removal and Treatment
    • Back River Wastewater Treatment Plant
    • Patapsco Wastewater Treatment Plant
    • Wastewater Permits
  • Stormwater Management
  • Currently Advertised Construction Projects
  • Prequalification for City of Baltimore (OBC)
  • Publications
  • News, Events & Public Notices
  • FAQ - Americans Disabilities Act
  • Collection Delay Information
  • Contact Us
  • Lead and Copper
  • Rates and Fees
  • Annual Calendar

City Seal

City of Baltimore

City Hall - Room 250
100 N. Holliday St, Baltimore, MD 21202

City Operator: (410) 396-3100

  • Accessibility Statement
  • Privacy Policy
  • Terms of Use

Contact

CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Copyright © 2024 City of Baltimore
All Rights Reserved.