Public water system · OH3239812
ActiveRiverdale Local Schools
At a glance
Riverdale Local Schools (PWSID OH3239812) is an active non-transient non-community water system in Hancock County, Ohio. It reports serving 1,106 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, none is health-based, and the most recent began in July 2004.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,106
Service connections
4
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Riverdale Local Schools compare with other water systems in Hancock County?
By EPA's size categories, Riverdale Local Schools is a small system (501 to 3,300 people). Hancock County has 37 active public water systems, and Riverdale Local Schools is the 6th-largest of them by population served. Its population served is about 39% below the county average of 1,810 people per system, and accounts for 1.7% of the 66,986 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 Riverdale Local Schools is about 157% 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 Riverdale Local Schools?
EPA lists Riverdale Local Schools 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. 28 of the 37 active systems in Hancock County (76%) are also privately owned.
Does Riverdale Local Schools have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2004. The violations listed here began between July 2004 and July 2004. By type: 12 monitoring and reporting. The contaminants or rules involved are Nickel, Antimony, Fluoride and Mercury. 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 |
|---|---|---|---|---|
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Berylliumcode 1075 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | 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.
Riverdale Local Schools: frequently asked questions
Who runs Riverdale Local Schools?
Riverdale Local Schools (PWSID OH3239812) is a non-transient non-community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Riverdale Local Schools serve?
Riverdale Local Schools reports serving 1,106 people through 4 service connections in Hancock County, Ohio.
Where does Riverdale Local Schools 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 Riverdale Local Schools have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2004. 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 Riverdale Local Schools' 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, none is health-based, and the most recent began in July 2004. For current results, consult EPA ECHO, or the OH state drinking water program.
Where can I find Riverdale Local Schools' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Riverdale Local Schools 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 Hancock County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Findlay City Pws | Hancock | 54,040 | Community | Surface water |
| Odot Rest Area 1-25 Nb | Hancock | 2,000 | Transient non-community | Groundwater |
| Northwestern W and Sd - Mccomb | Hancock | 1,527 | Community | Purchased surface water |
| Odot Rest Area 1-26 Sb | Hancock | 1,500 | Transient non-community | Groundwater |
| Arlington Village Pws | Hancock | 1,474 | Community | Groundwater |
| Cory Rawson Schools | Hancock | 595 | Non-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, “Riverdale Local Schools, PWSID OH3239812, Ohio”, https://aquacensus.com/water-systems/ohio/riverdale-local-schools-oh3239812 (data as of October 1, 2026).