Public water system · MI0007217
ActiveWynstone Subdivision
At a glance
Wynstone Subdivision (PWSID MI0007217) is an active community water system in Oakland County, Michigan. It reports serving 1,146 people through 230 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,146
Service connections
230
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Wynstone Subdivision compare with other water systems in Oakland County?
By EPA's size categories, Wynstone Subdivision is a small system (501 to 3,300 people). Oakland County has 734 active public water systems. Its population served is about 27% below the county average of 1,561 people per system, and accounts for 0.1% of the 1,145,905 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 Wynstone Subdivision 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 Wynstone Subdivision?
EPA lists Wynstone Subdivision 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. 638 of the 734 active systems in Oakland County (87%) are also privately owned.
Does Wynstone Subdivision 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 Wynstone Subdivision. For the latest compliance status, check EPA ECHO for current compliance history.
Wynstone Subdivision: frequently asked questions
Who runs Wynstone Subdivision?
Wynstone Subdivision (PWSID MI0007217) is a community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Wynstone Subdivision serve?
Wynstone Subdivision reports serving 1,146 people through 230 service connections in Oakland County, Michigan.
Where does Wynstone Subdivision 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 Wynstone Subdivision have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Wynstone Subdivision'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 MI state drinking water program.
Where can I find Wynstone Subdivision's water quality report?
As a community water system, Wynstone Subdivision 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 Oakland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Troy | Oakland | 85,854 | Community | Purchased surface water |
| Rochester Hills | Oakland | 74,000 | Community | Purchased surface water |
| Waterford Township | Oakland | 73,441 | Community | Groundwater |
| Southfield | Oakland | 71,739 | Community | Purchased surface water |
| Pontiac | Oakland | 63,776 | Community | Purchased surface water |
| Royal Oak, City of | Oakland | 57,236 | Community | Purchased surface water |
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, “Wynstone Subdivision, PWSID MI0007217, Michigan”, https://aquacensus.com/water-systems/michigan/wynstone-subdivision-mi0007217 (data as of October 1, 2026).