Kittitas Treatment Plant 680 Industrial Loop Kittitas, WA 98934 Phone : (509) 968-0225 Business Category Government Offices-City Village & Twp Government Offices State & Local Legislative Bodies Government Offices & Public Schools Kittitas City Of 600 S Industrial Way Ellensburg, WA 98926 Phone : (509) 968-0225 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools