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Wastewater Treatment

King County, Washington

For questions about the Wastewater Treatment Division website, please send an e-mail message or contact us at:

King Street Center
201 S. Jackson St., Suite 500
Seattle, WA 98104-3855
Phone: 206-477-5371
Fax: 206-684-1741
Telecommunication device for the deaf (TTY): 711

Get Directions to our office location in Seattle, Washington.

Staff Contacts

Lincoln Park sewer line repair

Completed spring 2006

Thank you West Seattle neighbors
Neighborhood Event Held June 3, 2006

To mark the end of construction of the Lincoln Park sewer line repair and provide community updates, county staff hosted a neighborhood event in Lincoln Park at picnic shelter No. 3 on Saturday, June 3 from 11 a.m. to 2 p.m.

In April 2006, King County finished a project to replace more than a mile of sewer line that runs through West Seattle's Lincoln Park. The 50-year-old line was damaged after heavy rains and high flows on Jan. 17 and Feb. 4, causing sewage leaks in Lincoln Park.

The county replaced the line after Wastewater Treatment Division inspectors discovered extensive wear and corrosion throughout much of the pipe.

Temporary pump system

To keep the system operating normally during construction, crews installed a temporary pipeline along the beach to carry wastewater from an interim pumping facility at Barton to Lowman Beach Park.

County crews removed the temporary pump system and the 18-inch-diameter pipe on April 28. The temporary pipe was flushed with seawater for a day or so to remove any excess sewage. Workers then cut the pipe into sections for removal. Other construction items, such as concrete blocks and sandbags, were also removed.

Restoration of Fauntleroy Cove

Most of the logs have been placed back along the high water line along the beach. The logs play a vital role in sand movement on the beach, and they also protect property from higher tides during storms.

Heavy machinery on the beach completing the installation of new pipes. Click image for larger view.
Heavy machinery on the beach completing the installation of new pipes. Click image for larger view.

The beach, a few days after the pipe was installed. Click image for larger view.
The beach, a few days after the pipe was installed. Click image for larger view.

After the temporary pipe was removed, the existing sand were re-graded. Additional sand was placed along the beach before replacing some of the logs.

King County inspected the beach in spring 2007 to make sure there are no changes in the normal patterns of sand deposition expected on this beach.

King County removed six truck loads of creosote treated logs at the beginning of construction. Creosote is a known environmental hazard for both people and fish.

Restoration of Lincoln Park

King County worked closely with Seattle Parks and Recreation on the restoration of Lincoln Park (external link). There were a number of activities to restore the park to conditions better than before construction.

The trail was resurfaced with a permeable (allows water through) surface. This improves drainage and reduces runoff into the Puget Sound.

New vegetation was placed in areas disturbed during construction and additional vegetation was added where needed.

The City of Seattle is also working on projects to restore the park.

King County would like to thank the following agencies and firms for their hard work:

  • City of Seattle Parks and Recreation
  • Frank Coluccio Construction
  • Goodwin Pumps

King County would also like to recognize the patience and cooperation of our West Seattle Neighbors, especially:

  • Morgan Community Association
  • Fauntleroy Neighborhood Association
  • All of the residents along Beach Drive Southwest
  • All of the residents on Fauntleroy Cove