News Flash

2022 Sewer Relining Project (48-20)

Posted on: March 17, 2022

2022 Sewer Relining Project Construction Notice


The Mukilteo Water and Wastewater District’s (District) has partnered with Alderwood Water & Wastewater District and hired Iron Horse, LLC to perform sanitary sewer repairs in your neighborhood.  Iron Horse, LLC is scheduled to begin work on the Sewer Relining Project in April 2022.

Approximately 1,270 lineal feet of mainline sewer and portions of 27 sewer laterals will be repaired by installing a thin, structural liner within the existing pipes.  This work will extend the life of the sewer line up to an additional 50 years.  The project is located in several separate locations, as shown on the map below, including:

  • 2nd Street from 714 2nd Street (Arnie’s) to Park Avenue,
  • 3rd Street from Loveland Avenue to approximately 950 3rd Street, 
  • 4th Street, from approximately 930 4th Street to 940 4th Street, and 
  • In front of 308 Loveland Avenue 


All work will occur in the public right-of-way and can typically be completed within one day.  Most of the work can be completed from the existing sewer manholes, resulting in little to no digging required.  Some traffic lanes may be temporarily closed during the work with flaggers helping to direct traffic around the work zones.  Limited construction noise should be expected.

Some residents will experience a temporary interruption to your sewer service.  If your sewer service will be directly impacted, you will receive a doorhanger from the contractor approximately 3-days in advance of work. During these hours we ask that you do not flush toilets, take showers or baths, and do not wash clothes or dishes.  Doing so may lead to sewage backing up into your home.

Contact for Questions:

There is never a good time for these types of projects. They are essential and necessary for the District to maintain safe and reliable service. The District appreciates your understanding and apologizes for any inconvenience this may cause. Please feel free to contact Engineering Manager Andrea Swisstack at or 425-355-3355 for any questions or concerns with the project. 

2022 Sewer Relining Program Project Map

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