Public water system · OH3101112
ActiveIndian Hill City Pws
At a glance
Indian Hill City Pws (PWSID OH3101112) is an active community water system in Hamilton County, Ohio. It reports serving 15,000 people through 5,481 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2001.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
15,000
Service connections
5,481
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Indian Hill City Pws compare with other water systems in Hamilton County?
By EPA's size categories, Indian Hill City Pws is a large system (10,001 to 100,000 people). Hamilton County has 26 active public water systems, and Indian Hill City Pws is the 3rd-largest of them by population served. Its population served is about half of the county average of 32,385 people per system, and accounts for 1.8% 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 community water system reports serving 6,703 people, so Indian Hill City Pws is about 124% above that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Ohio has 1,028 active community water systems, 27% 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 Indian Hill City Pws?
EPA lists Indian Hill City Pws as owned by a local government. 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. 9 of the 26 active systems in Hamilton County (35%) are also owned by a local government.
Does Indian Hill City Pws have drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2001. The violations listed here began between July 1992 and January 2001. By type: 4 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2001-01-01 | 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, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | 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 |
| 1992-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-10-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
All 7 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.
Indian Hill City Pws: frequently asked questions
Who runs Indian Hill City Pws?
Indian Hill City Pws (PWSID OH3101112) is a community water system owned by a local government. It is regulated by the OH state drinking water program.
How many people does Indian Hill City Pws serve?
Indian Hill City Pws reports serving 15,000 people through 5,481 service connections in Hamilton County, Ohio.
Where does Indian Hill City Pws 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 Indian Hill City Pws have any drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2001. 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 Indian Hill City Pws' 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 7 violations for this system; 3 are health-based, and the most recent began in January 2001. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Indian Hill City Pws' water quality report?
As a community water system, Indian Hill City Pws must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
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 |
| 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 |
| Cleves Village Pws | Hamilton | 6,000 | 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, “Indian Hill City Pws, PWSID OH3101112, Ohio”, https://aquacensus.com/water-systems/ohio/indian-hill-city-pws-oh3101112 (data as of October 1, 2026).