Public water system · IA7727608
ActiveHillock Estates
At a glance
Hillock Estates (PWSID IA7727608) is an active community water system in Polk County, Iowa. It reports serving 228 people through 91 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
228
Service connections
91
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Hillock Estates compare with other water systems in Polk County?
By EPA's size categories, Hillock Estates is a very small system (500 people or fewer). Polk County has 38 active public water systems. Its population served is well below the county average of 12,857 people per system, and accounts for less than 0.1% of the 488,556 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active community water system reports serving 6,703 people, so Hillock Estates is well below that figure.
What does “community water system” mean?
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. Iowa has 1,084 active community water systems, 59% of the state's 1,828 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 119 Iowa systems (6.5%) list purchased surface water as their primary source.
Who owns and regulates Hillock Estates?
EPA lists Hillock Estates as privately owned. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 21 of the 38 active systems in Polk County (55%) are also privately owned.
Does Hillock Estates have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2025. By type: 1 monitoring and reporting. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 as unaddressed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-10-20 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
The one violation in EPA's records.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Hillock Estates: frequently asked questions
Who runs Hillock Estates?
Hillock Estates (PWSID IA7727608) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Hillock Estates serve?
Hillock Estates reports serving 228 people through 91 service connections in Polk County, Iowa.
Where does Hillock Estates get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Hillock Estates have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Hillock Estates' water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Hillock Estates' water quality report?
As a community water system, Hillock Estates must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Polk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Des Moines Water Works | Polk | 246,055 | Community | Purchased surface water |
| Ankeny, City of | Polk | 76,207 | Community | Purchased surface water |
| Urbandale Water Utility | Polk | 45,605 | Community | Purchased surface water |
| Johnston Municipal Water Supply | Polk | 24,897 | Community | Purchased surface water |
| Clive Water Department | Polk | 20,277 | Community | Purchased surface water |
| Altoona Water Supply | Polk | 19,565 | Community | Groundwater |
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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, “Hillock Estates, PWSID IA7727608, Iowa”, https://aquacensus.com/water-systems/iowa/hillock-estates-ia7727608 (data as of October 1, 2026).