Black Hawk County, Iowa — public water systems
At a glance
18 active public water systems are filed under Black Hawk County, Iowa in EPA's SDWIS records, together reporting 123,407 people served. The largest is Waterloo Water Works, which reports serving 69,504 people. 10 are community water systems serving people where they live; the other 8 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
18
Population served
123.4K
Community systems
10
Groundwater share
100%
How does Black Hawk County compare with other Iowa counties?
Black Hawk County has the 34th-most active public water systems among the 114 counties listed for active Iowa systems in EPA records; among the 96 with 3 or more systems, the median has 14. Its systems report 123,407 people served in total, the 6th-largest county figure in the state and 3.9% of the statewide total. The average system here reports serving 6,856 people, about 4 times the Iowa average of 1,718. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.
Where does Black Hawk County's drinking water come from?
By primary water source, Black Hawk County's active systems draw on groundwater (16, 89%) and purchased groundwater (2, 11%). Overall, all rely mainly on groundwater (including purchased groundwater) and none on surface water, compared with 92% and 7.8% across Iowa. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, Waterloo Water Works, draws primarily on groundwater.
What kinds of water systems operate in Black Hawk County?
Black Hawk County's active systems break down as 10 community systems (56%), 1 non-transient non-community systems (5.6%) and 7 transient non-community systems (39%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as local government (56%) and private (44%).
Water systems in Black Hawk County
🔒 Create a free account to export CSV| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Waterloo Water Works | Black Hawk | 69,504 | Community | Groundwater |
| 2 | Cedar Falls Municipal Water Utilities | Black Hawk | 40,713 | Community | Groundwater |
| 3 | Evansdale Water Works | Black Hawk | 4,561 | Community | Groundwater |
| 4 | Hudson Water Supply | Black Hawk | 2,546 | Community | Purchased groundwater |
| 5 | La Porte City Utilities | Black Hawk | 2,284 | Community | Groundwater |
| 6 | Elk Run Heights Water Supply | Black Hawk | 1,069 | Community | Purchased groundwater |
| 7 | Dunkerton Muni Water Supply | Black Hawk | 842 | Community | Groundwater |
| 8 | Gilbertville Water Works | Black Hawk | 796 | Community | Groundwater |
| 9 | Cedar Falls Mobile Home Village | Black Hawk | 388 | Community | Groundwater |
| 10 | Lenwood Utilities | Black Hawk | 238 | Community | Groundwater |
| 11 | Pheasant Ridge Pro Shop | Black Hawk | 155 | Transient non-community | Groundwater |
| 12 | Kay Enterprises Inc. | Black Hawk | 62 | Non-transient non-community | Groundwater |
| 13 | Farmstead Preschool | Black Hawk | 50 | Transient non-community | Groundwater |
| 14 | Gilbertville Depot | Black Hawk | 40 | Transient non-community | Groundwater |
| 15 | Island Park Beach House | Black Hawk | 40 | Transient non-community | Groundwater |
| 16 | La Porte City Golf Club | Black Hawk | 40 | Transient non-community | Groundwater |
| 17 | Mcfarlane Park | Black Hawk | 40 | Transient non-community | Groundwater |
| 18 | Barn Happy | Black Hawk | 39 | Transient non-community | Groundwater |
Also serving Black Hawk County
These systems serve several counties, including Black Hawk County. EPA lists another county first for them, so they are not included in the counts above.
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ia Regional Utilities Assoc (Waverly) | Bremer + 7 more | 37,820 | Community | Groundwater |
Black Hawk County water systems: frequently asked questions
How many public water systems are in Black Hawk County, Iowa?
EPA's SDWIS records file 18 active public water systems under Black Hawk County, Iowa: 10 community systems (56%), 1 non-transient non-community systems (5.6%) and 7 transient non-community systems (39%). At least 1 more system is listed under another county but also serve Black Hawk County.
Who supplies drinking water in Black Hawk County, IA?
The largest community water systems filed under Black Hawk County are Waterloo Water Works (69,504 people served), Cedar Falls Municipal Water Utilities (40,713 people served) and Evansdale Water Works (4,561 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.
Does Black Hawk County's drinking water come from groundwater or surface water?
Of the 18 active public water systems in Black Hawk County, all draw mainly on groundwater and none on surface water, counting purchased supplies. The largest system, Waterloo Water Works, uses groundwater.
Where can I find a water quality report for Black Hawk County?
Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 10 community systems are filed under Black Hawk County, so the report to look for is the one from the system that supplies your address.
How can I check violations for a water system in Black Hawk County?
Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.
More Iowa water systems
- All Iowa public water systems· 1,828 active
- Buchanan County· 20 systems
- Franklin County· 20 systems
- Harrison County· 20 systems
- Winnebago County· 19 systems
- Floyd County· 18 systems
- Hancock County· 18 systems
- How to find out who supplies your drinking water
- How to find and read your annual water quality report
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Public water systems in Black Hawk County, Iowa”, https://aquacensus.com/water-systems/iowa/black-hawk (data as of October 1, 2026).