Public water system · OH3130612
ActiveCincinnati Incorporated
At a glance
Cincinnati Incorporated (PWSID OH3130612) is an active non-transient non-community water system in Hamilton County, Ohio. It reports serving 278 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
278
Service connections
2
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Cincinnati Incorporated compare with other water systems in Hamilton County?
By EPA's size categories, Cincinnati Incorporated is a very small system (500 people or fewer). Hamilton County has 26 active public water systems. Its population served is well below the county average of 32,385 people per system, and accounts for less than 0.1% of the 842,012 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 Cincinnati Incorporated is about 35% 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. 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 Cincinnati Incorporated?
EPA lists Cincinnati Incorporated 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. 16 of the 26 active systems in Hamilton County (62%) are also privately owned.
Does Cincinnati Incorporated have drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2021. The violations listed here began between July 1993 and April 2021. By type: 5 contaminant level above the legal limit, 3 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2021-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1996-10-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 9 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.
Cincinnati Incorporated: frequently asked questions
Who runs Cincinnati Incorporated?
Cincinnati Incorporated (PWSID OH3130612) is a non-transient non-community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Cincinnati Incorporated serve?
Cincinnati Incorporated reports serving 278 people through 2 service connections in Hamilton County, Ohio.
Where does Cincinnati Incorporated 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 Cincinnati Incorporated have any drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2021. 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 Cincinnati Incorporated'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 9 violations for this system; 5 are health-based, and the most recent began in April 2021. For current results, consult EPA ECHO, or the OH state drinking water program.
Where can I find Cincinnati Incorporated's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Cincinnati Incorporated 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 Hamilton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cincinnati Public Water System | Hamilton | 750,200 | Community | Surface water |
| Norwood City Pws | Hamilton | 19,870 | Community | Purchased surface water |
| Indian Hill City Pws | Hamilton | 15,000 | Community | Groundwater |
| Harrison City Pws | Hamilton | 11,600 | Community | Groundwater |
| Wyoming City Pws | Hamilton | 9,700 | Community | Groundwater |
| Reading City Pws | Hamilton | 9,506 | Community | Purchased surface water |
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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, “Cincinnati Incorporated, PWSID OH3130612, Ohio”, https://aquacensus.com/water-systems/ohio/cincinnati-incorporated-oh3130612 (data as of October 1, 2026).