Public water system · MI2010918
ActiveHidden Hill
At a glance
Hidden Hill (PWSID MI2010918) is an active transient non-community water system in Clare County, Michigan. It reports serving 280 people through 2 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 August 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
280
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Hidden Hill compare with other water systems in Clare County?
By EPA's size categories, Hidden Hill is a very small system (500 people or fewer). Clare County has 130 active public water systems. Its population served is about 42% above the county average of 197 people per system, and accounts for 1.1% of the 25,613 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Hidden Hill is about twice that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Michigan has 7,865 active transient non-community water systems, 74% 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 Hidden Hill?
EPA lists Hidden Hill 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. 125 of the 130 active systems in Clare County (96%) are also privately owned.
Does Hidden Hill have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in August 2015. The violations listed here began between October 1995 and August 2015. By type: 2 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2015-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
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.
Hidden Hill: frequently asked questions
Who runs Hidden Hill?
Hidden Hill (PWSID MI2010918) is a transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Hidden Hill serve?
Hidden Hill reports serving 280 people through 2 service connections in Clare County, Michigan.
Where does Hidden Hill 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 Hidden Hill have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in August 2015. 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 Hidden Hill'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 August 2015. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Hidden Hill's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hidden Hill is a 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 Clare County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Clare, City of | Clare | 3,118 | Community | Groundwater |
| Harrison, City of | Clare | 1,100 | Community | Groundwater |
| Clare Welcome Center | Clare | 1,000 | Transient non-community | Groundwater |
| Jays Sporting Goods | Clare | 900 | Non-transient non-community | Groundwater |
| Thrush'S Pit Stop | Clare | 900 | Transient non-community | Groundwater |
| Farwell, Village of | Clare | 871 | 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, “Hidden Hill, PWSID MI2010918, Michigan”, https://aquacensus.com/water-systems/michigan/hidden-hill-mi2010918 (data as of October 1, 2026).