Public water system · IA4852082
ActiveMillersburg Water Dept
At a glance
Millersburg Water Dept (PWSID IA4852082) is an active community water system in Iowa County, Iowa. It reports serving 135 people through 93 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
135
Service connections
93
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Millersburg Water Dept compare with other water systems in Iowa County?
By EPA's size categories, Millersburg Water Dept is a very small system (500 people or fewer). Iowa County has 15 active public water systems. Its population served is well below the county average of 884 people per system, and accounts for 1% of the 13,265 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 Millersburg Water Dept 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 156 Iowa systems (8.5%) list purchased groundwater as their primary source.
Who owns and regulates Millersburg Water Dept?
EPA lists Millersburg Water Dept 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 15 active systems in Iowa County (47%) are also owned by a local government.
Does Millersburg Water Dept have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2011. The violations listed here began between January 1996 and July 2011. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (8 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2011-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1999-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1999-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-02-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.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.
Millersburg Water Dept: frequently asked questions
Who runs Millersburg Water Dept?
Millersburg Water Dept (PWSID IA4852082) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Millersburg Water Dept serve?
Millersburg Water Dept reports serving 135 people through 93 service connections in Iowa County, Iowa.
Where does Millersburg Water Dept get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Millersburg Water Dept have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2011. 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 Millersburg Water Dept'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Millersburg Water Dept's water quality report?
As a community water system, Millersburg Water Dept 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 Iowa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Williamsburg Public Water Supply | Iowa | 3,345 | Community | Groundwater |
| Poweshiek Water Association (Iac) | Iowa | 2,490 | Community | Groundwater |
| Marengo Water Supply | Iowa | 2,435 | Community | Groundwater |
| Amana Society Water System North | Iowa | 1,248 | Community | Groundwater |
| North English Water Department | Iowa | 1,065 | Community | Groundwater |
| Victor Municipal Water Dept | Iowa | 875 | 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, “Millersburg Water Dept, PWSID IA4852082, Iowa”, https://aquacensus.com/water-systems/iowa/millersburg-water-dept-ia4852082 (data as of October 1, 2026).