Tacoma Water's Second Supply Project will finally bring the needed water to the South King
County and Pierce County areas. It has taken over three decades to acquire the property
rights, approvals, agreements, permits and funding for the project. In the mid-1980s three
South King County utilities (Lakehaven Utility District, Covington Water District and the
City of Kent) joined Tacoma as partners in the project.
The project involves a 34 mile long steel transmission main, additions and improvements to
the Green River diversion facilities, new water treatment facilities, additional water storage
behind the Corps of Engineer's Howard Hanson Dam and numerous environmental
enhancement projects. The Green River has provided the primary water supply by gravity flow to Tacoma through
Pipeline No. 1 since 1913. Since then Tacoma has supplemented the river supply with nearby
groundwater supplies during the higher demand periods of the summer. As a result, Tacoma
has extensive experience with the blending of the two supply sources and has implemented
operating procedures and treatment to assure acceptable water quality. However, the other
project partners have little or no experience integrating surface water into their existing well
supply systems. This paper presents some of the special water quality
considerations the other three project partners are making. Includes table, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 840 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 6 |
| Published : | 10/01/2003 |
