Regional progress update
The regional board packet updates design, construction and anticipated completion milestones across the current projects.
Source 1Source 2Source 3Source 4Source 5Regional water-supply projects
Design, expansion and transmission workCentral Iowa Water Works projects support the regional system supplying West Des Moines, including new treatment capacity and transmission improvements.
Project images and plans
- Program stage
- Design, expansion and transmission workSource
- Source period
- October 28, 2026 project progressSource
Projects & phases
- West Water Treatment Plant
- Preliminary design and site evaluation; estimated project completion revised to January 2033.Source
- Saylorville expansion
- Design phase; bidding anticipated February 2027 and plant construction March 2027–May 2029. Related supply work extends into July 2029.Source
- Fleur Drive nitrate-removal expansion
- Preliminary engineering and procurement preparation; 30% design submission anticipated in mid-November 2026.Source
- Hickman Road feeder main
- Construction and closeout continue; final completion milestone remains November 30, 2026.Source
- Grimes treatment expansion
- Planning and technical evaluation; groundwater modeling complete, with treatment and connection studies continuing.Source
- Long-range transmission and storage
- Budget planning lists West plant transmission, Sugar Creek–West storage connection, regional-core connection, Grimes/Urbandale booster, Waterford segments, northwest loop, Saylorville parallel main/reservoir/pumping, Saylorville II, NW 156th connections and West elevated storage.Source 1Source 2
- Source-water protection planning
- Protection plan and future-land-use documents completed and submitted for technical review in spring 2026; final adoption not verified.Source
- Johnston–Grimes connection
- Listed in the preliminary 2027 regional capital program.Source
What matters next
- Program status
- Design, expansion and transmission work.Source
- Next milestone
- Updated agency schedules, adopted capital plans and phase-completion notices.
Project context
Central Iowa Water Works projects support the regional system supplying West Des Moines, including new treatment capacity and transmission improvements.
Project milestones
Documents & sources
Official records and reporting, with access limitations noted.
CIWW projectsOfficial regional project page→CIWW regional capital schedule2026 budget adopted November 19, 2025 · future schedules are planning estimates→Water Works service-area explanationRegional supply context→Source-water protection planning sourcePrimary project record→CIWW approved November 19, 2025 minutesBudget and initial long-range plan adoption→West Water Treatment Plant progressOctober 28, 2026 board-packet progress report→Saylorville treatment expansion progressOctober 28, 2026 board-packet progress report→Fleur Drive nitrate-removal expansion progressOctober 28, 2026 board-packet progress report→Hickman Road feeder main progressOctober 28, 2026 board-packet progress report→Grimes supply and treatment expansion progressOctober 28, 2026 board-packet progress report→Draft 2027 regional capital tableOctober 28, 2026 packet · preliminary program→
Open questions
- Follow the linked agency records for updated phase schedules, approvals and completion milestones.