Public water system · MI2124825
ActiveHillside Plaza
At a glance
Hillside Plaza (PWSID MI2124825) is an active non-transient non-community water system in Genesee County, Michigan. It reports serving 150 people through 15 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
15
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Hillside Plaza compare with other water systems in Genesee County?
By EPA's size categories, Hillside Plaza is a very small system (500 people or fewer). Genesee County has 378 active public water systems. Its population served is well below the county average of 871 people per system, and accounts for less than 0.1% of the 329,216 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Hillside Plaza is about 65% below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Michigan has 1,402 active non-transient non-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 Hillside Plaza?
EPA lists Hillside Plaza 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. 358 of the 378 active systems in Genesee County (95%) are also privately owned.
Does Hillside Plaza have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in January 2025. The violations listed here began between October 2024 and January 2025. By type: 2 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Arsenic (3 of them). EPA lists 3 as archived and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Archived |
| 2025-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 2024-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Archived |
All 4 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.
Hillside Plaza: frequently asked questions
Who runs Hillside Plaza?
Hillside Plaza (PWSID MI2124825) is a non-transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Hillside Plaza serve?
Hillside Plaza reports serving 150 people through 15 service connections in Genesee County, Michigan.
Where does Hillside Plaza 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 Hillside Plaza have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in January 2025. 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 Hillside Plaza'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 4 violations for this system; 2 are health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Hillside Plaza's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hillside Plaza is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Genesee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Flint, City of | Genesee | 81,252 | Community | Purchased surface water |
| Genesee County Water System | Genesee | 73,726 | Community | Purchased surface water |
| Charter Township of Grand Blanc | Genesee | 21,000 | Community | Purchased surface water |
| Burton, City of | Genesee | 21,000 | Community | Purchased surface water |
| Fenton, City of | Genesee | 11,746 | Community | Groundwater |
| Beecher Metropolitan District | Genesee | 9,400 | 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, “Hillside Plaza, PWSID MI2124825, Michigan”, https://aquacensus.com/water-systems/michigan/hillside-plaza-mi2124825 (data as of October 1, 2026).