Public water system · IL0150150
ActiveMilledgeville
At a glance
Milledgeville (PWSID IL0150150) is an active community water system in Carroll County, Illinois. It reports serving 989 people through 587 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 1993.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
989
Service connections
587
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Milledgeville compare with other water systems in Carroll County?
By EPA's size categories, Milledgeville is a small system (501 to 3,300 people). Carroll County has 35 active public water systems, and Milledgeville is the 5th-largest of them by population served. Its population served is about 157% above the county average of 384 people per system, and accounts for 7.4% of the 13,444 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Milledgeville 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. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates Milledgeville?
EPA lists Milledgeville as owned by a local government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 35 active systems in Carroll County (23%) are also owned by a local government.
Does Milledgeville have drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 1993. The violations listed here began between June 1977 and July 1993. By type: 3 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 5 as archived. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1993-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1992-09-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1977-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 5 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.
Milledgeville: frequently asked questions
Who runs Milledgeville?
Milledgeville (PWSID IL0150150) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Milledgeville serve?
Milledgeville reports serving 989 people through 587 service connections in Carroll County, Illinois.
Where does Milledgeville 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 Milledgeville have any drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 1993. 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 Milledgeville'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 records list 5 violations for this system; 2 are health-based, and the most recent began in July 1993. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Milledgeville's water quality report?
As a community water system, Milledgeville 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 Carroll County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Savanna | Carroll | 3,020 | Community | Groundwater |
| Thomson Maximum Security Center | Carroll | 2,166 | Community | Purchased groundwater |
| Lanark | Carroll | 1,504 | Community | Groundwater |
| Mount Carroll | Carroll | 1,479 | Community | Groundwater |
| Shannon | Carroll | 801 | Community | Groundwater |
| Thomson | Carroll | 580 | 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, “Milledgeville, PWSID IL0150150, Illinois”, https://aquacensus.com/water-systems/illinois/milledgeville-il0150150 (data as of October 1, 2026).