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Consent Decree

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Wastewater Collection System Consent Decree

On November 9, 2016, the City of Tyler approved a draft agreement with the U.S. Environmental Protection Agency (EPA) to make wastewater collection system upgrades, and to enhance the City's existing programs for inspections, maintenance and cleaning of the wastewater system. The agreement, known as a Consent Decree, became effective as of April 10, 2017 and will last for ten (10) years.

Under the Consent Decree, Tyler Water Utilities will be required to develop and implement a Capacity, Management, Operation and Maintenance (CMOM) Program. This program provides a framework for TWU to perform a comprehensive review of our wastewater collection system and enhance our current operation and maintenance practices so that we can:

  • Better manage, operate and maintain our wastewater collection system,
  • Better identify areas in the collection system with potential capacity constraints, and
  • Better respond to unauthorized discharges.

Components of the CMOM program will include:

System Cleaning:

1. Develop schedules for cleaning every pipe in the sanitary sewer system a minimum of once every ten years.

2. Identify pipe segments that may need cleaning more frequently (quarterly, biannually, annually).

* Condition Assessments:

1. Pipe assessments, which includes TV inspections and/or smoke testing of all 690+ miles of sewer mains in the system.

2. Manhole assessments, which includes visual and/or TV inspections of all 11,000+ manholes in the sewer system.

3. Lift station assessments, which includes visual and operational inspections of every pump and force main at all 23 lift stations.

4. Develop schedules to repair or replace pipes, manholes and pumps that are identified during the assessments that are in need of repair or replacement.

* Capacity Assessments:

1. Update the existing sewer system hydraulic model to assess the capacity of the existing system using several different scenarios, such as existing and anticipated future wastewater flows during both dry and wet weather conditions and reduction of infiltration and inflows (I/I) from the system and private lateral lines. 

2. Develop schedules to replace pipes or pumps that are identified by the model to be undersized.

* Develop new procedures or update existing procedures:

1. Routine and preventative maintenance of the sewer system.

2. Controlling grease and roots in the sewer system.

3. Employee training.

4. Responses to sewer overflows.

Consent Decree

History of Sewer System
Consent Decree Schedule
Press Release

Consent Decree Documents

 Watch this question & answer session with City Manager Ed Broussard to learn more about the Consent Decree

 EPA Q & A with City Manager Ed Broussard