Public water system · MI0001543
ActiveGreen Oak Twp - Centennial Farms
At a glance
Green Oak Twp - Centennial Farms (PWSID MI0001543) is an active community water system in Livingston County, Michigan. It reports serving 900 people through 75 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
900
Service connections
75
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Green Oak Twp - Centennial Farms compare with other water systems in Livingston County?
By EPA's size categories, Green Oak Twp - Centennial Farms is a small system (501 to 3,300 people). Livingston County has 425 active public water systems. Its population served is about 187% above the county average of 314 people per system, and accounts for 0.7% of the 133,320 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 Green Oak Twp - Centennial Farms 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 Green Oak Twp - Centennial Farms?
EPA lists Green Oak Twp - Centennial Farms as owned by a local government. 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. 12 of the 425 active systems in Livingston County (2.8%) are also owned by a local government.
Does Green Oak Twp - Centennial Farms have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2022. The violations listed here began between January 2006 and January 2022. By type: 1 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Total trihalomethanes (TTHM) and Arsenic. EPA lists 2 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 |
|---|---|---|---|---|
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2006-01-23 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
All 2 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.
Green Oak Twp - Centennial Farms: frequently asked questions
Who runs Green Oak Twp - Centennial Farms?
Green Oak Twp - Centennial Farms (PWSID MI0001543) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Green Oak Twp - Centennial Farms serve?
Green Oak Twp - Centennial Farms reports serving 900 people through 75 service connections in Livingston County, Michigan.
Where does Green Oak Twp - Centennial Farms 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 Green Oak Twp - Centennial Farms have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in January 2022. 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 Green Oak Twp - Centennial Farms' 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 2 violations for this system; 1 is health-based, and the most recent began in January 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Green Oak Twp - Centennial Farms' water quality report?
As a community water system, Green Oak Twp - Centennial Farms 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 Livingston County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mhog Sewer & Water Authority | Livingston | 17,046 | Community | Groundwater |
| Brighton, City of | Livingston | 10,210 | Community | Groundwater |
| Howell, City of | Livingston | 9,914 | Community | Groundwater |
| Livingston Community Water Authority | Livingston | 4,152 | Community | Groundwater |
| Hartland Township | Livingston | 3,022 | Community | Groundwater |
| Chilson Commons / Kroger | Livingston | 3,000 | Non-transient non-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, “Green Oak Twp - Centennial Farms, PWSID MI0001543, Michigan”, https://aquacensus.com/water-systems/michigan/green-oak-twp-centennial-farms-mi0001543 (data as of October 1, 2026).