Active Capital Improvement Projects

14-2 560 Zone Lakehaven Utility District South

The District has allocated $50,000 in 2015 for studies and evaluations.

» Click here for the complete project Narrative
16-2 Pump Station No. 8 (Crestview)

Preliminary engineering and feasibility study to locate a second pump station into the 560 Pressure Zone.

» Click here for the complete project Narrative
16-3 Mansion Hill Reservoir Relocation

In late 2015, Sound Transit selected the SR509/I-5 route for the Federal Way Link Light Rail Extension Project. The proposed alignment passes adjacent to the District 5.0 MG 490 Zone reservoir at Mansion Hill. The close proximity of the light rail will require the reloction of the reservoir.

» Click here for the complete project Narrative
16-4 Mansion Hill Transmission Main Relocation

In 2017,the District will begin Project 16-4 Sound Transit Transmission Main Relocationas a separate project from the reservoir relocation.  The project will replace approximately 2,000 LF of existing transmission main in conflict with the proposed light rail alignment.  The District will begin the design for the Project 16-4 in 2017.  The District budgeted $350,000 for 2017, $1.5 million in 2018 and $250,000 in 2019.  

 As of November 2016, the preliminary estimate for the project work at Mansion Hill for all projects is $13.8 million.  ST's reimbursement estimate is $12.2 million.  The difference is District funding for "betterments" not considered the responsibility of ST.

17-1 2017 Water Main Replacement Project

Project 17-1 2017 AC Water Main Replacement

 The District selected Gray and Osborne to design an AC water main replacement project for the 2017 construction season.  The Board authorized the project in October 2016.

There are six project locations.  They are as follows:


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S 176th St from 42nd Ave S to Military Rd S

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3rd Ave SW/3rd Pl SW at SW 200th St

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S 232nd St & 14th Ave S

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16th Lane from 23453 to S 240th St

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S 268th St from Military Rd S to 40th Ave S

37th Ave S from S 268th St to S 270th St

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S 272nd St at 31st Ave S


This project will replace approximately 9,000 lineal feet of existing AC water mains with new, ductile iron water mains, in addition to new services, hydrants, services and appurtenances.  The project locations were selected due to recent water main breaks, anticipation of city overlay projects and identified pipe segments in the Water System Plan.  The District allocated $2.37 million for the project costs and will be funded by rates and capital reserves.   The project should be complete by the end of summer 2017.


17-2 2018 AC Water Main Replacement Project

Project 17-2 2018 AC Water Main Replacement

Project 17-2 is a budget allocation for a future main replacement project.  Specific project locations are not yet determined.  The District allocated $150,000 in the 2017 budget for preliminary engineering services.  The intent would be to identify, design and award a project by spring 2018 to receive the most favorable bids for the 2018 construction season.


Contact Us

Highline Water District
23828 30th Ave. S.
Kent, WA 98032
Phone: 206-824-0375
Emergency: 206-824-0375
FAX: 206-824-0806

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