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State utility hub
Browse the indexed community water systems in this state. Each profile brings the provider’s payment routes and household protection policies into a single, practical guide.
Public Water Authority
Service area: Des Moines and the Greater Des Moines metropolitan area
Population: Approximately 600,000 people in the Greater Des Moines area; the utility independently operates the regional drinking-water system while local communities retain their own customer-service and billing relationships.
Private Investor-Owned Utility
Service area: Davenport and Iowa American Water service areas
Population: 147,720 people (EPA SDWIS active CWS PWS IA8222001)
Municipal Department
Service area: Cedar Rapids, Iowa
Population: 142,364 people (EPA SDWIS active CWS PWS IA5715093)
Municipal Department
Service area: Sioux City, Iowa
Population: 85,791 people
Municipal Department
Service area: Ankeny
Population: 76,207 people (EPA SDWA system estimate)
Municipal Department
Service area: West Des Moines
Population: Approximately 73,959 people in the EPA-listed West Des Moines community-water-system service area.
Municipal Department
Service area: Waterloo and Evansdale, Iowa, with Waterloo Water Works water service and associated billed sewer charges
Population: 69,504 people (EPA/Iowa DNR queue estimate for IA0790074)
Municipal Department
Service area: City of Iowa City municipal water, sewer, solid-waste and stormwater utility service area
Population: 68,753 people (EPA SDWIS queue estimate for IA5225079)
Public Water Authority
Service area: City of Council Bluffs
Population: 64,447 people (EPA SDWA queue estimate for IA7820080)
Municipal Department
Service area: City of Dubuque
Population: 59,667 people (EPA SDWA queue estimate for IA3126052)
Municipal Department
Service area: City of Ames
Population: 55,177 people (EPA SDWA queue estimate for IA8503039)
Public Water Authority
Service area: Rathbun Regional Water Association service area
Population: 33,000 people (EPA SDWA queue estimate for IA0400900)
Municipal Department
Service area: Waukee
Population: 31,823 people (EPA SDWA queue estimate for IA2573080)
Public Water Authority
Service area: Newton / Central Iowa service area
Population: 28,250 people (EPA SDWA queue estimate for IA5059704)
Municipal Department
Service area: Marshalltown
Population: 27,680 people (EPA SDWA queue estimate for IA6469042)
Municipal Department
Service area: Mason City
Population: 27,338 people (EPA SDWA queue estimate for IA1750048)
Municipal Department
Service area: Burlington
Population: 26,015 people (EPA SDWIS 2026Q2 estimate for IA2909053)
Municipal Department
Service area: Fort Dodge
Population: 25,874 people (EPA SDWIS 2026Q2 estimate for IA9433050)
Municipal Department
Service area: Ottumwa
Population: 25,529 people (EPA SDWIS 2026Q2 estimate for IA9083012)
Municipal Department
Service area: Muscatine
Population: 25,516 people (EPA SDWIS 2026Q2 estimate for IA7048001)
Municipal Department
Service area: Johnston
Population: 24,897 people (EPA SDWIS 2026Q2 estimate for IA7740011)
Private Investor-Owned Utility
Service area: Clinton
Population: 24,769 people (EPA SDWIS 2026Q2 estimate for IA2326048)
Municipal Department
Service area: North Liberty
Population: 23,276 people (EPA SDWIS 2026Q2 estimate for IA5252072)
Municipal Department
Service area: Coralville
Population: 22,318 people (EPA SDWIS 2026Q2 estimate for IA5208071)
Public Water Authority
Service area: Creston
Population: 20,793 people (EPA SDWIS 2026Q2 estimate for IA8080701)
Municipal Department
Service area: Clive
Population: 20,277 people (EPA SDWIS 2026Q2 estimate for IA7720051)
Public Water Authority
Service area: Indianola
Population: 20,095 people (EPA SDWIS 2026Q2 estimate for IA9133701)
Municipal Department
Service area: Altoona
Population: 19,565 people (EPA SDWIS 2026Q2 estimate for IA7707030)
Municipal Department
Service area: SIOUX CITY
Population: 85791 people (EPA SDWIS 2026Q2 active CWS estimate for IA9778054)
Municipal Department
Service area: ANKENY
Population: 76207 people (EPA SDWIS 2026Q2 active CWS estimate for IA7709053)
Municipal Department
Service area: URBANDALE
Population: 45605 people (EPA SDWIS 2026Q2 active CWS estimate for IA7780042)
Public Water Authority
Service area: AMES
Population: 42000 people (EPA SDWIS 2026Q2 active CWS estimate for IA8503528)
Municipal Department
Service area: MARION
Population: 41623 people (EPA SDWIS 2026Q2 active CWS estimate for IA5751035)
Municipal Department
Service area: CEDAR FALLS
Population: 40713 people (EPA SDWIS 2026Q2 active CWS estimate for IA0709084)
Private Investor-Owned Utility
Service area: NEWTON
Population: 37820 people (EPA SDWIS 2026Q2 active CWS estimate for IA0990701)
Iowa directory notes
This state hub brings together 35 indexed community water systems, from city departments and public authorities to investor-owned systems and smaller regional providers. A service area may cross municipal boundaries, so use the provider name and service address on your bill when choosing a profile.
The most important distinction is between a directory listing and an official account channel. Water Ledger provides a structured starting point; the utility’s own payment portal, published rate schedule, customer-service office, and mailed notice control your account. Compare the payment route, billing frequency, emergency number, and customer-protection notes before relying on a page for a time-sensitive decision.
If you are helping a household with a high bill, leak, or delinquency notice, open the utility profile and review the payment, shut-off, and leak-adjustment guides together. Keep the bill, account number, confirmation receipts, repair records, and notice dates available when speaking with the provider.