Baltimore City Sewage Overflow

Past Time to Fix the Pipes

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Sewage overflows continue to pollute waterways and threaten human health; modified Consent Decree issued.

One hundred-plus years ago, Baltimore upgraded to a "modern" sewage disposal system. Today, that system is crumbling. Century-old pipes leak stormwater into the sewer system and sewage into the stormwater system. Illegal connections mix sewage with stormwater. Overflows occur with alarming frequency after a heavy rain. Even in dry weather, the system leaches sewage into the storm drains.

If sewage overflows into basements, rivers, and the Harbor are not enough, serious financial concerns accompany the problem. Hundreds of millions of dollars have been paid by Baltimore rate payers since 2002 when the City entered into a consent decree with the Department of Justice. The consent decree required the City to undertake major repairs to the system and gave it 14 years to comply. Unfortunately, and disturbingly, the consent decree deadline expired on December 31, 2015, with the City far from achieving many of its goals to eliminate sewage overflows within city limits. In addition, reducing pollution from sewage overflows is critical if the City is to meet its requirements for implementing the Chesapeake Clean Water Blueprint.

Under the prior consent decree, engineers working to bring the system up to current standards determined that a misaligned pipe, the result of an error in the original engineering of the Back River Sewage Treatment Plant, is constricting flow to the facility, causing a 10-mile backup of sewage (fixing this serious problem has been called "the Headworks Project").

Unfortunately, until the Headworks Project is complete, major overflows will continue to occur at the two upstream engineered sanitary sewer overflows structures along the Jones Falls during wet weather.

Click here to view CBF's  interactive map , which shows the extent of Baltimore's sewage problems.


The City also launched its own interactive maps of sewage overflows and active water main repairs in January 2019.

Amended Consent Decree

On October 6, 2017, an amended Modified Consent Decree was 'entered' by the U.S. District Court for the District of Maryland to address the problem. The new document is far more comprehensive and addresses the most serious and complex structural failings within the system. However, the Modified Consent Decree stretches deadlines for final completion of the work to 2030, rates continue to rise, and questions remain about financing and political will. In response to questions about revenues generated by rate payers to make the repairs, City officials revealed that over the 14-year term of the first consent decree nearly $900 million was spent to identify where the problems lie and to engineer solutions. Of that, $350 million was spent, some say ineffectively, on closing 60 of 62 structured "relief valves" to stem recurring overflows.

While the document still lacks definitive milestones linked to improvements in water quality, it does include provisions for greater community and public input on program elements to be developed by the City, and CBF encourages all our affected members to sign up to receive notices on the Department of Public Works’ Sanitary Sewer Consent Decree Program website. The City has also made improvements in public outreach by posting information on the Consent Decree Program on a dedicated web page. The City also launched two interactive maps of sewage overflows and active water main repairs in January 2019.

The Modified Consent Decree consists of two phases. The first includes completing the Headworks Project by 2021. The city contends this fix will eliminate 83 percent of the sewage overflows. Other repairs and upgrades will also be made to the collection system around the city. In the second phase, the Department of Public Works (DPW) will assess the integrity of the upgrades, then make additional repairs as needed to bring the reductions to 99 percent by 2030.

DPW will be required to address sources of sewage from unknown origins like illegal hook-ups to the system, and make regular reports to administrators about overflows and progress.

What It Will Take to Fix the Pipes

Fixing the Headworks back-up by 2021 is estimated to cost the city in excess of $300 million. Completing the repairs by 2030 is expected to cost a total of $2.1 billion. And rates will continue to rise, though not as sharply as they have in the recent past.

Work began in earnest with the groundbreaking for the massive Headworks Project on August 11, 2017. As of December 2018, the City had completed 29,302 linear feet of pipe replacement, cleaned 425,103 linear feet of pipe, and installed more than one million linear feet of cured in-place piping, among other rehabilitation projects. According to the most recent Quarterly Report filed by the City, this work is "progressing steadily," and two major components of the project, the Influent Pumping Station facility and Fine Screen & Grit Removal facilities, are currently under construction.

In spite of all this work, hundreds of sewage overflows continue to occur during wet weather, directly impacting City residents. It is the continuing responsibility of the current and future City administrations to administer the work required under the Modified Consent Decree efficiently and expeditiously to ensure rate payers get what they are paying for, time lines are met, overflows and health concerns are abated, and we see a significant improvement in water quality.

CBF Comments on Proposed CD

CBF submitted comments on the proposed modification to the Consent Decree and continues to meet with the involved agencies and the City to further improve it.

View CBF's submitted comments

A consent decree is an agreement or settlement to resolve a dispute between two parties without admission of guilt (in a criminal case) or liability (in a civil case) and most often refers to such a type of settlement in the United States.
- Wikipedia, the free encyclopedia

CBF's Position

To expedite progress on the sewer project and provide the public a full and proper accounting and timetable for its completion, the Chesapeake Bay Foundation called for deadlines for specific action on the issue. The City must be held accountable for progress. Among other steps, the authorities must:

  • Immediately hire a third-party auditor to track progress and expenditures;
  • Provide an open public accounting of the finances of the project and of all work finished or scheduled;
  • By 2020, fix the Back River plant's feeder pipe. By that time the City also must stop intentionally releasing sewage into the Jones Falls as a means to relieve pressure;
  • And by 2025, complete all remaining upgrades identified in the consent decree. This date is realistic, and appropriate given the regional plan to clean the Chesapeake Bay requires all jurisdictions to have strategies in place by then to reduce pollution.

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