Public water system · IA7128036
ActiveHartley Municipal Water Department
At a glance
Hartley Municipal Water Department (PWSID IA7128036) is an active community water system in O'Brien County, Iowa. It reports serving 1,605 people through 845 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,605
Service connections
845
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hartley Municipal Water Department compare with other water systems in O'Brien County?
By EPA's size categories, Hartley Municipal Water Department is a small system (501 to 3,300 people). O'Brien County has 7 active public water systems, and Hartley Municipal Water Department is the 2nd-largest of them by population served. Its population served is roughly in line with the county average of 1,597 people per system, and accounts for 14% of the 11,182 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 Hartley Municipal Water Department 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.
Who owns and regulates Hartley Municipal Water Department?
EPA lists Hartley Municipal Water Department as owned by a local government. 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. 7 of the 7 active systems in O'Brien County (100%) are also owned by a local government.
Does Hartley Municipal Water Department have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Hartley Municipal Water Department. For the latest compliance status, check EPA ECHO for current compliance history.
Hartley Municipal Water Department: frequently asked questions
Who runs Hartley Municipal Water Department?
Hartley Municipal Water Department (PWSID IA7128036) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Hartley Municipal Water Department serve?
Hartley Municipal Water Department reports serving 1,605 people through 845 service connections in O'Brien County, Iowa.
Where does Hartley Municipal Water Department get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Hartley Municipal Water Department have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Hartley Municipal Water Department's 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 Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Hartley Municipal Water Department's water quality report?
As a community water system, Hartley Municipal Water Department 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 O'Brien County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sheldon Water Department | O'Brien | 5,512 | Community | Groundwater |
| Sanborn Water Supply | O'Brien | 1,392 | Community | Groundwater |
| Paullina Municipal Water Supply | O'Brien | 996 | Community | Groundwater |
| Primghar Municipal Water Supply | O'Brien | 902 | Community | Groundwater |
| Sutherland Water Supply | O'Brien | 629 | Community | Purchased groundwater |
| Calumet Water Supply | O'Brien | 146 | Community | Purchased 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, “Hartley Municipal Water Department, PWSID IA7128036, Iowa”, https://aquacensus.com/water-systems/iowa/hartley-municipal-water-department-ia7128036 (data as of October 1, 2026).