Public water system · OH4634212
ActiveMad River Mountain
At a glance
Mad River Mountain (PWSID OH4634212) is an active transient non-community water system in Logan County, Ohio. It reports serving 2,135 people through 4 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in January 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,135
Service connections
4
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Mad River Mountain compare with other water systems in Logan County?
By EPA's size categories, Mad River Mountain is a small system (501 to 3,300 people). Logan County has 124 active public water systems, and Mad River Mountain is the 3rd-largest of them by population served. Its population served is about 6.1 times the county average of 350 people per system, and accounts for 4.9% of the 43,390 people reported by systems filed under the county. Across Ohio, the 3,854 active systems average 2,767 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Mad River Mountain is about 15 times 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. Ohio has 2,282 active transient non-community water systems, 59% of the state's 3,854 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,446 Ohio systems (89%) list groundwater as their primary source.
Who owns and regulates Mad River Mountain?
EPA lists Mad River Mountain as privately owned. The OH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 108 of the 124 active systems in Logan County (87%) are also privately owned.
Does Mad River Mountain have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in January 2017. The violations listed here began between July 1991 and January 2017. By type: 7 contaminant level above the legal limit, 4 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (11 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2017-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1991-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The 12 most recent 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.
Mad River Mountain: frequently asked questions
Who runs Mad River Mountain?
Mad River Mountain (PWSID OH4634212) is a transient non-community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Mad River Mountain serve?
Mad River Mountain reports serving 2,135 people through 4 service connections in Logan County, Ohio.
Where does Mad River Mountain 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 Mad River Mountain have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in January 2017. 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 Mad River Mountain'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. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in January 2017. For current results, consult EPA ECHO, or the OH state drinking water program.
Where can I find Mad River Mountain's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mad River Mountain 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 Logan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bellefontaine City Pws | Logan | 13,249 | Community | Groundwater |
| Honda Dma East Liberty WTP | Logan | 3,500 | Non-transient non-community | Groundwater |
| West Liberty Village Pws | Logan | 1,800 | Community | Groundwater |
| Russells Point Village Pws | Logan | 1,651 | Community | Groundwater |
| Honda Dma Trans Manufacturing Oh Div | Logan | 1,600 | Non-transient non-community | Groundwater |
| Odnr Indian Lake St Pk - Campground | Logan | 1,491 | 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, “Mad River Mountain, PWSID OH4634212, Ohio”, https://aquacensus.com/water-systems/ohio/mad-river-mountain-oh4634212 (data as of October 1, 2026).