Public water system · OH1935712
ActiveMississinawa Valley High
At a glance
Mississinawa Valley High (PWSID OH1935712) is an active non-transient non-community water system in Darke County, Ohio. It reports serving 781 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in October 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
781
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mississinawa Valley High compare with other water systems in Darke County?
By EPA's size categories, Mississinawa Valley High is a small system (501 to 3,300 people). Darke County has 66 active public water systems. Its population served is about 43% above the county average of 545 people per system, and accounts for 2.2% of the 35,986 people reported by systems filed under the county. Across Ohio, the 3,854 active systems average 2,767 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Mississinawa Valley High is about 82% above 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. Ohio has 544 active non-transient non-community water systems, 14% 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 Mississinawa Valley High?
EPA lists Mississinawa Valley High 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. 54 of the 66 active systems in Darke County (82%) are also privately owned.
Does Mississinawa Valley High have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in October 2006. The violations listed here began between April 1992 and October 2006. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2006-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1992-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 3 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.
Mississinawa Valley High: frequently asked questions
Who runs Mississinawa Valley High?
Mississinawa Valley High (PWSID OH1935712) is a non-transient non-community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Mississinawa Valley High serve?
Mississinawa Valley High reports serving 781 people through 3 service connections in Darke County, Ohio.
Where does Mississinawa Valley High 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 Mississinawa Valley High have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in October 2006. 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 Mississinawa Valley High'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 3 violations for this system; 2 are health-based, and the most recent began in October 2006. For current results, consult EPA ECHO, or the OH state drinking water program.
Where can I find Mississinawa Valley High's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mississinawa Valley High 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 Darke County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Greenville City Pws | Darke | 13,227 | Community | Surface water |
| Eldora Speedway Main Concessions Pws | Darke | 3,007 | Transient non-community | Groundwater |
| Versailles Village Pws | Darke | 2,687 | Community | Groundwater |
| Arcanum Village Pws | Darke | 2,100 | Community | Groundwater |
| Bradford Village Pws | Darke | 2,000 | Community | Groundwater |
| Ansonia Village Pws | Darke | 1,174 | 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, “Mississinawa Valley High, PWSID OH1935712, Ohio”, https://aquacensus.com/water-systems/ohio/mississinawa-valley-high-oh1935712 (data as of October 1, 2026).