Public water system · MI0040124
ActiveWindsor Estates
At a glance
Windsor Estates (PWSID MI0040124) is an active community water system in Eaton County, Michigan. It reports serving 718 people through 470 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in December 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
718
Service connections
470
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Windsor Estates compare with other water systems in Eaton County?
By EPA's size categories, Windsor Estates is a small system (501 to 3,300 people). Eaton County has 103 active public water systems. Its population served is roughly in line with the county average of 659 people per system, and accounts for 1.1% of the 67,916 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active community water system reports serving 6,703 people, so Windsor 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. Michigan has 1,332 active community water systems, 13% of the state's 10,599 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.
Who owns and regulates Windsor Estates?
EPA lists Windsor Estates as privately owned. The MI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 94 of the 103 active systems in Eaton County (91%) are also privately owned.
Does Windsor Estates have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in December 2023. The violations listed here began between January 2001 and December 2023. By type: 6 monitoring and reporting, 3 public notice, recordkeeping or other, 2 contaminant level above the legal limit and 1 reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (2 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 |
|---|---|---|---|---|
| 2023-12-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2016-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2015-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2015-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2006-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-03-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2002-01-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | No | Resolved |
| 2001-01-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | 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.
Windsor Estates: frequently asked questions
Who runs Windsor Estates?
Windsor Estates (PWSID MI0040124) is a community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Windsor Estates serve?
Windsor Estates reports serving 718 people through 470 service connections in Eaton County, Michigan.
Where does Windsor Estates 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 Windsor Estates have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in December 2023. 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 Windsor 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. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in December 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Windsor Estates' water quality report?
As a community water system, Windsor 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 Eaton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Charter Township of Delta | Eaton | 21,856 | Community | Purchased groundwater |
| Charlotte, City of | Eaton | 9,074 | Community | Groundwater |
| Grand Ledge, City of | Eaton | 8,701 | Community | Groundwater |
| Eaton Rapids, City of | Eaton | 5,340 | Community | Groundwater |
| Potterville, City of | Eaton | 2,617 | Community | Groundwater |
| Olivet, City of | Eaton | 1,758 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Windsor Estates, PWSID MI0040124, Michigan”, https://aquacensus.com/water-systems/michigan/windsor-estates-mi0040124 (data as of October 1, 2026).