How many drinking water utilities are in Iowa?

Iowa has 49 drinking water utilities serving more than 10,000 people listed in this directory.

What does 'people served' mean?

People served refers to the total population that receives water service from the utility. This number represents the estimated number of residents within the utility's service area.

Why are utilities listed by city?

Utilities are listed by their primary city of operation to help users find water services in their local area. Some utilities may serve multiple cities or unincorporated areas within a region.

How can I get more details about a utility?

Click on any utility name or the 'View Profile' button to access the full utility profile page, which includes detailed information, contact details, and compliance data.

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Drinking Water Utilities in Iowa

Browse utilities serving more than 10,000 people by location and population served.

Utilities listed

Total people served

1,887,728

Largest utility

Des Moines Water Works

245,123 people

Coverage

100%

with population data

Iowa has 49 drinking water utilities serving more than 10,000 people in this directory. The largest utility by population served is Des Moines Water Works, serving 245,123 people. Utilities are listed with their city location and population served.

People Served:

01,000,000

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Utility Name	City	People Served	Action
Des Moines Water Works	Des Moines	245,123	View Profile
Iowa-American Water Company - Davenport	Davenport	147,720	View Profile
Cedar Rapids Water Department	Cedar Rapids	141,420	View Profile
Sioux City Water Supply	Sioux City	85,791	View Profile
Waterloo Water Works	Waterloo	69,504	View Profile
Iowa City Water Department	Iowa City	68,753	View Profile
West Des Moines Water Works	West Des Moines	68,723	View Profile
City of Ankeny	Ankeny	68,090	View Profile
Council Bluffs Water Works	Council Bluffs	64,447	View Profile
Dubuque Water Works	Dubuque	59,667	View Profile
Ames Water Treatment Plant	Ames	55,177	View Profile
Urbandale Water Utility	Urbandale	45,600	View Profile
Marion Municipal Water Department	Marion	41,623	View Profile
Cedar Falls Municipal Water Utilities	Cedar Falls	40,713	View Profile
Central IA Water Assn (Waverly)	Newton	37,820	View Profile
ISU	Ames	36,822	View Profile
Rathbun Regional Water Assn	Centerville	32,000	View Profile
Marshalltown Water Works	Marshalltown	27,591	View Profile
Mason City Water Department	Mason City	27,338	View Profile
University Water System	Iowa City	26,684	View Profile
Burlington Municipal Waterworks	Burlington	26,015	View Profile
Fort Dodge Water Supply	Fort Dodge	25,874	View Profile
Ottumwa Water Works	Ottumwa	25,529	View Profile
Iowa-American Water Co-Clinton District	Davenport	24,769	View Profile
Johnston Municipal Water Supply	Johnston	24,064	View Profile
Waukee Water Supply	Waukee	23,940	View Profile
Muscatine Power & Water	Muscatine	23,797	View Profile
Coralville Muni Water System	Coralville	22,318	View Profile
North Liberty Water Supply	North Liberty	20,491	View Profile
Warren Water District	Indianola	20,095	View Profile
Altoona Water Supply	Altoona	19,565	View Profile
SIRWA #2 (Creston)	Creston	19,488	View Profile
Clive Water Department	Clive	18,601	View Profile
Newton Water Supply	Newton	16,518	View Profile
Wapello Rural Water Assoc.	Ottumwa	16,075	View Profile
Indianola Water Supply	Indianola	15,833	View Profile
Grimes Water Supply	Grimes	15,392	View Profile
Poweshiek Water Association	Tama	13,920	View Profile
Norwalk Water Supply	Norwalk	12,799	View Profile
Boone Water Works	Boone	12,460	View Profile
Rathbun Reg Water Association (Ft. Madison)	Centerville	11,840	View Profile
Oskaloosa Municipal Water Department	Oskaloosa	11,558	View Profile
Storm Lake Water Treatment Plant	Storm Lake	11,431	View Profile
Spencer Municipal Water Utility	Spencer	11,325	View Profile
Ft Madison Muni Water Works	Fort Madison	11,087	View Profile
Pella Water Works Department	Pella	11,052	View Profile
Lemars Water Department	Lemars	10,571	View Profile
Waverly Water Department	Waverly	10,394	View Profile
Carroll Municipal Water Supply	Carroll	10,321	View Profile

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Top Drinking Water Utilities in Iowa by Population Served

Frequently Asked Questions

Definitions

People served: Total population supplied with water by the utility system.
Drinking water utility: A public water system that provides potable (safe to drink) water to residential and commercial customers through a distribution network.