Public water system · MI0005235
ActivePenny Lake Estates Subdivision
At a glance
Penny Lake Estates Subdivision (PWSID MI0005235) is an active community water system in Oakland County, Michigan. It reports serving 390 people through 122 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; none is health-based, and the most recent began in July 2001.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
390
Service connections
122
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Penny Lake Estates Subdivision compare with other water systems in Oakland County?
By EPA's size categories, Penny Lake Estates Subdivision is a very small system (500 people or fewer). Oakland County has 734 active public water systems. Its population served is well below the county average of 1,561 people per system, and accounts for less than 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 Penny Lake Estates 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 Penny Lake Estates Subdivision?
EPA lists Penny Lake Estates Subdivision 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. 56 of the 734 active systems in Oakland County (7.6%) are also owned by a local government.
Does Penny Lake Estates Subdivision have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2001. The violations listed here began between February 1999 and July 2001. By type: 1 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminants or rules involved are Consumer Confidence Rule and Total coliform bacteria (TCR). 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 |
|---|---|---|---|---|
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1999-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | 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.
Penny Lake Estates Subdivision: frequently asked questions
Who runs Penny Lake Estates Subdivision?
Penny Lake Estates Subdivision (PWSID MI0005235) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Penny Lake Estates Subdivision serve?
Penny Lake Estates Subdivision reports serving 390 people through 122 service connections in Oakland County, Michigan.
Where does Penny Lake Estates 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 Penny Lake Estates Subdivision have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2001. 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 Penny Lake Estates 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 records list 2 violations for this system; none is health-based, and the most recent began in July 2001. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Penny Lake Estates Subdivision's water quality report?
As a community water system, Penny Lake Estates 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 |
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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, “Penny Lake Estates Subdivision, PWSID MI0005235, Michigan”, https://aquacensus.com/water-systems/michigan/penny-lake-estates-subdivision-mi0005235 (data as of October 1, 2026).